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using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.Data.SqlClient;
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using System.Data;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using MySql.Data.MySqlClient;
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using System.Configuration;
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using System.Xml;
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using System.Text.RegularExpressions;
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namespace WindowsFormsApp1
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{
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public class DbHelperMySQL
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{
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/// <summary>
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/// 数据访问抽象基础类
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/// Copyright (C) 2004-2008 By zzzili
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/// </summary>
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//数据库连接字符串(web.config来配置)，可以动态更改connectionString支持多数据库.
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/// <summary>
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/// 获取连接字符串
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/// </summary>
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public static string connectionString = GetConnectionStringFromXml("./SystemConfig.xml");
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//"server=10.164.1.169;port=3306;user=root;password=3687988; database=mesdb_nca;";//GetConnectionStringFromXml("./SystemConfig.xml");
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public static string DbName = getDbName();//"mesdb_nca";
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public static string getDbName() {
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// 使用正则表达式提取数据库名称
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string pattern = "database=([^;]+)";
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Match match = Regex.Match(connectionString, pattern);
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if (match.Success)
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{
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string databaseName = match.Groups[1].Value;
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//Console.WriteLine(databaseName); // 输出: mesdb_nca
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return databaseName;
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}
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System.Windows.Forms.MessageBox.Show("获取数据库失败");
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return "";
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}
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public static string GetConnectionStringFromXml(string xmlFilePath)
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{
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try
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{
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XmlDocument xmlDoc = new XmlDocument();
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xmlDoc.Load(xmlFilePath);
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XmlNodeList connectionNodes = xmlDoc.SelectNodes("//config");
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foreach (XmlNode configNode in connectionNodes)
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{
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string name = configNode.Attributes["name"].Value;
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string ivalue = configNode.Attributes["ivalue"].Value;
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if (name.Equals("ConnString")) return ivalue;
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}
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throw new Exception("No connection string found in the XML file.");
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}
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catch (Exception ex)
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{
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throw new Exception("Error reading XML file: " + ex.Message);
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}
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}
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private MySqlConnection connection;
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/// <summary>
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/// DbHelperMySQL无参数构造函数
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/// </summary>
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private DbHelperMySQL(MySqlConnection connection)
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{
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this.connection = connection;
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}
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#region 公用方法
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/// <summary>
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/// 获取表中最大的Id值
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/// </summary>
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/// <param name="FieldName">列名</param>
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/// <param name="TableName">表名</param>
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/// <returns></returns>
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public static int GetMaxID(string FieldName, string TableName)
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{
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string strsql = "select max(" + FieldName + ")+1 from " + TableName;
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object obj = GetSingle(strsql);
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if (obj == null)
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{
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return 1;
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}
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else
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{
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return int.Parse(obj.ToString());
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}
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}
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/// <summary>
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/// 返回查询是否存在
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/// </summary>
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/// <param name="strSql">要查询的Sql语句</param>
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/// <returns></returns>
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public static bool Exists(string strSql)
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{
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object obj = GetSingle(strSql);
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int cmdresult;
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if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
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{
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cmdresult = 0;
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}
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else
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{
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cmdresult = int.Parse(obj.ToString());
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}
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if (cmdresult == 0)
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{
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return false;
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}
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else
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{
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return true;
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}
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}
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/// <summary>
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/// 返回查询是否存在
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/// </summary>
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/// <param name="strSql">查询语句</param>
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/// <param name="cmdParms">参数互列表</param>
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/// <returns></returns>
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public static bool Exists(string strSql, params MySqlParameter[] cmdParms)
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{
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object obj = GetSingle(strSql, cmdParms);
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int cmdresult;
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if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
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{
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cmdresult = 0;
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}
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else
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{
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cmdresult = int.Parse(obj.ToString());
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}
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if (cmdresult == 0)
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{
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return false;
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}
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else
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{
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return true;
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}
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}
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#endregion
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#region 执行简单SQL语句
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/// <summary>
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/// 返回新增加数据的Primary Key
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/// </summary>
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/// <param name="SQLString">要执行的INSERT SQL语句</param>
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/// <param name="TableName">表名</param>
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/// <param name="FieldName">字段名</param>
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/// <returns></returns>
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public static int ExecuteSqlReturnLastRowId(string SQLString, string TableName, string FieldName)
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{
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using (MySqlConnection connection = new MySqlConnection(connectionString))
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{
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using (MySqlCommand cmd = new MySqlCommand(SQLString, connection))
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{
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try
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{
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connection.Open();//int rows =
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cmd.ExecuteNonQuery();
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int a = GetMaxID(FieldName, TableName);
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return a;
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}
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catch (MySql.Data.MySqlClient.MySqlException e)
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{
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connection.Close();
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throw new Exception(e.Message);
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}
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}
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}
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}
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/// <summary>
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/// 执行SQL语句，返回影响的记录数
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/// </summary>
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/// <param name="SQLString">SQL语句</param>
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/// <returns>影响的记录数</returns>
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public static int ExecuteSql(string SQLString)
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{
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using (MySqlConnection connection = new MySqlConnection(connectionString))
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{
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using (MySqlCommand cmd = new MySqlCommand(SQLString, connection))
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{
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try
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{
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connection.Open();
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int rows = cmd.ExecuteNonQuery();
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return rows;
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}
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catch (MySql.Data.MySqlClient.MySqlException e)
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{
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connection.Close();
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throw e;
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}
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}
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}
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}
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/// <summary>
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/// 指定时间执行
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/// </summary>
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/// <param name="SQLString">执行语句</param>
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/// <param name="Times">时间</param>
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/// <returns></returns>
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public static int ExecuteSqlByTime(string SQLString, int Times)
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{
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using (MySqlConnection connection = new MySqlConnection(connectionString))
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{
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using (MySqlCommand cmd = new MySqlCommand(SQLString, connection))
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{
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try
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{
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connection.Open();
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cmd.CommandTimeout = Times;
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int rows = cmd.ExecuteNonQuery();
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return rows;
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}
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catch (MySql.Data.MySqlClient.MySqlException e)
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{
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connection.Close();
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throw e;
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}
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}
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}
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}
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/// <summary>
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/// 执行多条SQL语句，实现数据库事务。
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/// </summary>
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/// <param name="SQLStringList">多条SQL语句</param>
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public static int ExecuteSqlTran(List<String> SQLStringList)
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{
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using (MySqlConnection conn = new MySqlConnection(connectionString))
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{
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conn.Open();
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MySqlCommand cmd = new MySqlCommand();
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cmd.Connection = conn;
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MySqlTransaction tx = conn.BeginTransaction();
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cmd.Transaction = tx;
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try
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{
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int count = 0;
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for (int n = 0; n < SQLStringList.Count; n++)
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{
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string strsql = SQLStringList[n];
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if (strsql.Trim().Length > 1)
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{
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cmd.CommandText = strsql;
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count += cmd.ExecuteNonQuery();
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}
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}
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tx.Commit();
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return count;
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}
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catch
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{
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tx.Rollback();
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return 0;
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}
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}
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}
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/// <summary>
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/// 执行带一个存储过程参数的的SQL语句。
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/// </summary>
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/// <param name="SQLString">SQL语句</param>
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/// <param name="content">参数内容,比如一个字段是格式复杂的文章，有特殊符号，可以通过这个方式添加</param>
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/// <returns>影响的记录数</returns>
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public static int ExecuteSql(string SQLString, string content)
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{
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using (MySqlConnection connection = new MySqlConnection(connectionString))
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{
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MySqlCommand cmd = new MySqlCommand(SQLString, connection);
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MySql.Data.MySqlClient.MySqlParameter myParameter = new MySql.Data.MySqlClient.MySqlParameter("@content", SqlDbType.NText);
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myParameter.Value = content;
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cmd.Parameters.Add(myParameter);
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try
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{
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connection.Open();
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int rows = cmd.ExecuteNonQuery();
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return rows;
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}
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catch (MySql.Data.MySqlClient.MySqlException e)
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{
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throw e;
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}
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finally
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{
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cmd.Dispose();
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connection.Close();
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}
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}
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}
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/// <summary>
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/// 执行带一个存储过程参数的的SQL语句。
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/// </summary>
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/// <param name="SQLString">SQL语句</param>
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/// <param name="content">参数内容,比如一个字段是格式复杂的文章，有特殊符号，可以通过这个方式添加</param>
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/// <returns>影响的记录数</returns>
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public static object ExecuteSqlGet(string SQLString, string content)
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{
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using (MySqlConnection connection = new MySqlConnection(connectionString))
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{
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MySqlCommand cmd = new MySqlCommand(SQLString, connection);
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MySql.Data.MySqlClient.MySqlParameter myParameter = new MySql.Data.MySqlClient.MySqlParameter("@content", SqlDbType.NText);
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myParameter.Value = content;
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cmd.Parameters.Add(myParameter);
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try
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{
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connection.Open();
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object obj = cmd.ExecuteScalar();
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if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
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{
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return null;
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}
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else
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{
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return obj;
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}
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}
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catch (MySql.Data.MySqlClient.MySqlException e)
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{
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throw e;
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}
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finally
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{
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cmd.Dispose();
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connection.Close();
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}
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}
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}
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/// <summary>
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/// 向数据库里插入图像格式的字段(和上面情况类似的另一种实例)
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/// </summary>
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/// <param name="strSQL">SQL语句</param>
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/// <param name="fs">图像字节,数据库的字段类型为image的情况</param>
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/// <returns>影响的记录数</returns>
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public static int ExecuteSqlInsertImg(string strSQL, byte[] fs)
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{
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using (MySqlConnection connection = new MySqlConnection(connectionString))
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{
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MySqlCommand cmd = new MySqlCommand(strSQL, connection);
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MySql.Data.MySqlClient.MySqlParameter myParameter = new MySql.Data.MySqlClient.MySqlParameter("@fs", SqlDbType.Image);
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myParameter.Value = fs;
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cmd.Parameters.Add(myParameter);
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try
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{
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connection.Open();
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int rows = cmd.ExecuteNonQuery();
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return rows;
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}
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catch (MySql.Data.MySqlClient.MySqlException e)
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{
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throw e;
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}
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finally
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{
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cmd.Dispose();
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connection.Close();
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}
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}
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}
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//执行单条插入语句，并返回id，不需要返回id的用ExceuteNonQuery执行。
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/// <summary>
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/// 执行插入语句并返回Id，不需返回Id的用其它执行方法
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/// </summary>
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/// <param name="sql">Sql语句</param>
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/// <param name="parameters">此参数为Null时进行</param>
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/// <returns></returns>
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public static int ExecuteInsert(string sql, MySqlParameter[] parameters)
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{
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//Debug.WriteLine(sql);
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using (MySqlConnection connection = new MySqlConnection(connectionString))
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{
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MySqlCommand cmd = new MySqlCommand(sql, connection);
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try
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{
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connection.Open();
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if (parameters != null) cmd.Parameters.AddRange(parameters);
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cmd.ExecuteNonQuery();
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cmd.CommandText = @"select LAST_INSERT_ID()";
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//此方法估计也可直接用 select @@identity 获得，两值基本都是全局服务，使用时不能关闭Connection
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int value = Int32.Parse(cmd.ExecuteScalar().ToString());
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return value;
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}
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catch (Exception e)
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{
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throw e;
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}
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}
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}
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/// <summary>
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/// 执行一条计算查询结果语句，返回查询结果（object）。
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/// </summary>
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/// <param name="SQLString">计算查询结果语句</param>
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/// <returns>查询结果（object）</returns>
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public static object GetSingle(string SQLString)
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{
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using (MySqlConnection connection = new MySqlConnection(connectionString))
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{
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using (MySqlCommand cmd = new MySqlCommand(SQLString, connection))
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{
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try
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{
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connection.Open();
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object obj = cmd.ExecuteScalar();
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if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
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{
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return null;
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}
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else
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{
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return obj;
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}
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}
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catch (MySql.Data.MySqlClient.MySqlException e)
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{
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connection.Close();
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throw e;
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}
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}
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}
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}
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/// <summary>
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|
|
/// 获取单一值
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/// </summary>
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|
/// <param name="SQLString">Sql语句</param>
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|
/// <param name="Times">时间</param>
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/// <returns>Object类型</returns>
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|
|
public static object GetSingle(string SQLString, int Times)
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|
{
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|
using (MySqlConnection connection = new MySqlConnection(connectionString))
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|
|
{
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|
using (MySqlCommand cmd = new MySqlCommand(SQLString, connection))
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|
|
{
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|
|
try
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|
{
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connection.Open();
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cmd.CommandTimeout = Times;
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object obj = cmd.ExecuteScalar();
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|
|
if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
|
|
|
{
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return null;
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|
}
|
|
|
else
|
|
|
{
|
|
|
return obj;
|
|
|
}
|
|
|
}
|
|
|
catch (MySql.Data.MySqlClient.MySqlException e)
|
|
|
{
|
|
|
connection.Close();
|
|
|
throw e;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
/// <summary>
|
|
|
/// 执行查询语句，返回MySqlDataReader ( 注意：调用该方法后，一定要对MySqlDataReader进行Close )
|
|
|
/// </summary>
|
|
|
/// <param name="strSQL">查询语句</param>
|
|
|
/// <returns>MySqlDataReader</returns>
|
|
|
public static MySqlDataReader ExecuteReader(string strSQL)
|
|
|
{
|
|
|
MySqlConnection connection = new MySqlConnection(connectionString);
|
|
|
MySqlCommand cmd = new MySqlCommand(strSQL, connection);
|
|
|
try
|
|
|
{
|
|
|
connection.Open();
|
|
|
MySqlDataReader myReader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
|
|
|
return myReader;
|
|
|
}
|
|
|
catch (MySql.Data.MySqlClient.MySqlException e)
|
|
|
{
|
|
|
throw e;
|
|
|
}
|
|
|
|
|
|
}
|
|
|
/// <summary>
|
|
|
/// 执行查询语句，返回DataTable
|
|
|
/// </summary>
|
|
|
/// <param name="SQLString">查询语句</param>
|
|
|
/// <returns>DataTable</returns>
|
|
|
public static DataTable Query(string SQLString)
|
|
|
{
|
|
|
using (MySqlConnection connection = new MySqlConnection(connectionString))
|
|
|
{
|
|
|
DataSet ds = new DataSet();
|
|
|
DataTable dt = new DataTable();
|
|
|
try
|
|
|
{
|
|
|
connection.Open();
|
|
|
MySqlDataAdapter command = new MySqlDataAdapter(SQLString, connection);
|
|
|
command.Fill(ds, "ds");
|
|
|
dt = ds.Tables[0];
|
|
|
}
|
|
|
catch (MySqlException ex)
|
|
|
{
|
|
|
throw new Exception(ex.Message);
|
|
|
}
|
|
|
return dt;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
/// <summary>
|
|
|
/// 执行事务委托lambda语句，参数是DbHelperMySQL对象,通过执行对象的方法可以在事务的控制内
|
|
|
/// </summary>
|
|
|
/// <param name="transactionAction">lambda语句</param>
|
|
|
/// <returns>void</returns>
|
|
|
public static void ExecuteTransaction(Action<DbHelperMySQL> transactionAction)
|
|
|
{
|
|
|
|
|
|
using (MySqlConnection connection = new MySqlConnection(connectionString))
|
|
|
{
|
|
|
connection.Open();
|
|
|
using (MySqlTransaction transaction = connection.BeginTransaction())
|
|
|
{
|
|
|
try
|
|
|
{
|
|
|
transactionAction.Invoke(new DbHelperMySQL(connection));
|
|
|
transaction.Commit();
|
|
|
}
|
|
|
catch (Exception ex)
|
|
|
{
|
|
|
transaction.Rollback();
|
|
|
throw new Exception("Transaction failed: " + ex.Message);
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
/// <summary>
|
|
|
/// 执行SQL语句，返回影响的记录数
|
|
|
/// </summary>
|
|
|
/// <param name="SQLString">SQL语句</param>
|
|
|
/// <returns>影响的记录数</returns>
|
|
|
public static int ExecuteSql(MySqlConnection connection, string SQLString)
|
|
|
{
|
|
|
using (MySqlCommand cmd = new MySqlCommand(SQLString, connection))
|
|
|
{
|
|
|
int rows = cmd.ExecuteNonQuery();
|
|
|
return rows;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
/// <summary>
|
|
|
/// 执行SQL语句，返回影响的记录数
|
|
|
/// </summary>
|
|
|
/// <param name="SQLString">SQL语句</param>
|
|
|
/// <returns>影响的记录数</returns>
|
|
|
public int executeSql(string SQLString)
|
|
|
{
|
|
|
using (MySqlCommand cmd = new MySqlCommand(SQLString, this.connection))
|
|
|
{
|
|
|
int rows = cmd.ExecuteNonQuery();
|
|
|
return rows;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/// <summary>
|
|
|
/// 执行语句，返回DataSet
|
|
|
/// </summary>
|
|
|
/// <param name="SQLString">Sql语句</param>
|
|
|
/// <param name="Times">时间</param>
|
|
|
/// <returns></returns>
|
|
|
public static DataSet Query(string SQLString, int Times)
|
|
|
{
|
|
|
using (MySqlConnection connection = new MySqlConnection(connectionString))
|
|
|
{
|
|
|
DataSet ds = new DataSet();
|
|
|
try
|
|
|
{
|
|
|
connection.Open();
|
|
|
MySqlDataAdapter command = new MySqlDataAdapter(SQLString, connection);
|
|
|
command.SelectCommand.CommandTimeout = Times;
|
|
|
command.Fill(ds, "ds");
|
|
|
}
|
|
|
catch (MySql.Data.MySqlClient.MySqlException ex)
|
|
|
{
|
|
|
throw new Exception(ex.Message);
|
|
|
}
|
|
|
return ds;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
#endregion
|
|
|
|
|
|
#region 执行带参数的SQL语句
|
|
|
|
|
|
/// <summary>
|
|
|
/// 执行SQL语句，返回影响的记录数
|
|
|
/// </summary>
|
|
|
/// <param name="SQLString">SQL语句</param>
|
|
|
/// <param name="cmdParms">准备好的参数列表</param>
|
|
|
/// <returns>影响的记录数</returns>
|
|
|
public static int ExecuteSql(string SQLString, params MySqlParameter[] cmdParms)
|
|
|
{
|
|
|
using (MySqlConnection connection = new MySqlConnection(connectionString))
|
|
|
{
|
|
|
using (MySqlCommand cmd = new MySqlCommand())
|
|
|
{
|
|
|
try
|
|
|
{
|
|
|
PrepareCommand(cmd, connection, null, SQLString, cmdParms);
|
|
|
int rows = cmd.ExecuteNonQuery();
|
|
|
cmd.Parameters.Clear();
|
|
|
return rows;
|
|
|
}
|
|
|
catch (MySql.Data.MySqlClient.MySqlException e)
|
|
|
{
|
|
|
throw e;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
|
|
|
/// <summary>
|
|
|
/// 执行多条SQL语句，实现数据库事务。
|
|
|
/// </summary>
|
|
|
/// <param name="SQLStringList">SQL语句的哈希表（key为sql语句，value是该语句的MySqlParameter[]）</param>
|
|
|
public static void ExecuteSqlTran(Hashtable SQLStringList)
|
|
|
{
|
|
|
using (MySqlConnection conn = new MySqlConnection(connectionString))
|
|
|
{
|
|
|
conn.Open();
|
|
|
using (MySqlTransaction trans = conn.BeginTransaction())
|
|
|
{
|
|
|
MySqlCommand cmd = new MySqlCommand();
|
|
|
try
|
|
|
{
|
|
|
//循环
|
|
|
foreach (DictionaryEntry myDE in SQLStringList)
|
|
|
{
|
|
|
string cmdText = myDE.Key.ToString();
|
|
|
MySqlParameter[] cmdParms = (MySqlParameter[])myDE.Value;
|
|
|
PrepareCommand(cmd, conn, trans, cmdText, cmdParms);
|
|
|
int val = cmd.ExecuteNonQuery();
|
|
|
cmd.Parameters.Clear();
|
|
|
}
|
|
|
trans.Commit();
|
|
|
}
|
|
|
catch
|
|
|
{
|
|
|
trans.Rollback();
|
|
|
throw;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
/// <summary>
|
|
|
/// 执行多条SQL语句，实现数据库事务。
|
|
|
/// </summary>
|
|
|
/// <param name="SQLStringList">SQL语句的哈希表（key为sql语句，value是该语句的MySqlParameter[]）</param>
|
|
|
public static void ExecuteSqlTranWithIndentity(Hashtable SQLStringList)
|
|
|
{
|
|
|
using (MySqlConnection conn = new MySqlConnection(connectionString))
|
|
|
{
|
|
|
conn.Open();
|
|
|
using (MySqlTransaction trans = conn.BeginTransaction())
|
|
|
{
|
|
|
MySqlCommand cmd = new MySqlCommand();
|
|
|
try
|
|
|
{
|
|
|
int indentity = 0;
|
|
|
//循环
|
|
|
foreach (DictionaryEntry myDE in SQLStringList)
|
|
|
{
|
|
|
string cmdText = myDE.Key.ToString();
|
|
|
MySqlParameter[] cmdParms = (MySqlParameter[])myDE.Value;
|
|
|
foreach (MySqlParameter q in cmdParms)
|
|
|
{
|
|
|
if (q.Direction == ParameterDirection.InputOutput)
|
|
|
{
|
|
|
q.Value = indentity;
|
|
|
}
|
|
|
}
|
|
|
PrepareCommand(cmd, conn, trans, cmdText, cmdParms);
|
|
|
int val = cmd.ExecuteNonQuery();
|
|
|
foreach (MySqlParameter q in cmdParms)
|
|
|
{
|
|
|
if (q.Direction == ParameterDirection.Output)
|
|
|
{
|
|
|
indentity = Convert.ToInt32(q.Value);
|
|
|
}
|
|
|
}
|
|
|
cmd.Parameters.Clear();
|
|
|
}
|
|
|
trans.Commit();
|
|
|
}
|
|
|
catch
|
|
|
{
|
|
|
trans.Rollback();
|
|
|
throw;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
/// <summary>
|
|
|
/// 执行一条计算查询结果语句，返回查询结果（object）。
|
|
|
/// </summary>
|
|
|
/// <param name="SQLString">计算查询结果语句</param>
|
|
|
/// <param name="cmdParms">准备好的参数列表</param>
|
|
|
/// <returns>查询结果（object）</returns>
|
|
|
public static object GetSingle(string SQLString, params MySqlParameter[] cmdParms)
|
|
|
{
|
|
|
using (MySqlConnection connection = new MySqlConnection(connectionString))
|
|
|
{
|
|
|
using (MySqlCommand cmd = new MySqlCommand())
|
|
|
{
|
|
|
try
|
|
|
{
|
|
|
PrepareCommand(cmd, connection, null, SQLString, cmdParms);
|
|
|
object obj = cmd.ExecuteScalar();
|
|
|
cmd.Parameters.Clear();
|
|
|
if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
|
|
|
{
|
|
|
return null;
|
|
|
}
|
|
|
else
|
|
|
{
|
|
|
return obj;
|
|
|
}
|
|
|
}
|
|
|
catch (MySql.Data.MySqlClient.MySqlException e)
|
|
|
{
|
|
|
throw e;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
/// <summary>
|
|
|
/// 执行查询语句，返回MySqlDataReader ( 注意：调用该方法后，一定要对MySqlDataReader进行Close )
|
|
|
/// </summary>
|
|
|
/// <param name="SQLString">查询语句</param>
|
|
|
/// <param name="cmdParms">参数列表</param>
|
|
|
/// <returns></returns>
|
|
|
public static MySqlDataReader ExecuteReader(string SQLString, params MySqlParameter[] cmdParms)
|
|
|
{
|
|
|
MySqlConnection connection = new MySqlConnection(connectionString);
|
|
|
MySqlCommand cmd = new MySqlCommand();
|
|
|
try
|
|
|
{
|
|
|
PrepareCommand(cmd, connection, null, SQLString, cmdParms);
|
|
|
MySqlDataReader myReader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
|
|
|
cmd.Parameters.Clear();
|
|
|
return myReader;
|
|
|
}
|
|
|
catch (MySql.Data.MySqlClient.MySqlException e)
|
|
|
{
|
|
|
throw e;
|
|
|
}
|
|
|
// finally
|
|
|
// {
|
|
|
// cmd.Dispose();
|
|
|
// connection.Close();
|
|
|
// }
|
|
|
|
|
|
}
|
|
|
|
|
|
/// <summary>
|
|
|
/// 执行查询语句，返回DataSet
|
|
|
/// </summary>
|
|
|
/// <param name="SQLString">查询语句</param>
|
|
|
/// <param name="cmdParms">参数列表</param>
|
|
|
/// <returns>DataSet</returns>
|
|
|
public static DataSet Query(string SQLString, params MySqlParameter[] cmdParms)
|
|
|
{
|
|
|
using (MySqlConnection connection = new MySqlConnection(connectionString))
|
|
|
{
|
|
|
MySqlCommand cmd = new MySqlCommand();
|
|
|
PrepareCommand(cmd, connection, null, SQLString, cmdParms);
|
|
|
using (MySqlDataAdapter da = new MySqlDataAdapter(cmd))
|
|
|
{
|
|
|
DataSet ds = new DataSet();
|
|
|
try
|
|
|
{
|
|
|
da.Fill(ds, "ds");
|
|
|
cmd.Parameters.Clear();
|
|
|
}
|
|
|
catch (MySql.Data.MySqlClient.MySqlException ex)
|
|
|
{
|
|
|
throw new Exception(ex.Message);
|
|
|
}
|
|
|
return ds;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
/// <summary>
|
|
|
/// 准备命令语句
|
|
|
/// </summary>
|
|
|
/// <param name="cmd">Command命令</param>
|
|
|
/// <param name="conn">Connection对象</param>
|
|
|
/// <param name="trans">是否是事务</param>
|
|
|
/// <param name="cmdText">语句</param>
|
|
|
/// <param name="cmdParms">参数列表</param>
|
|
|
private static void PrepareCommand(MySqlCommand cmd, MySqlConnection conn, MySqlTransaction trans, string cmdText, MySqlParameter[] cmdParms)
|
|
|
{
|
|
|
if (conn.State != ConnectionState.Open)
|
|
|
conn.Open();
|
|
|
cmd.Connection = conn;
|
|
|
cmd.CommandText = cmdText;
|
|
|
if (trans != null)
|
|
|
cmd.Transaction = trans;
|
|
|
cmd.CommandType = CommandType.Text;//cmdType;
|
|
|
if (cmdParms != null)
|
|
|
{
|
|
|
foreach (MySqlParameter parameter in cmdParms)
|
|
|
{
|
|
|
if ((parameter.Direction == ParameterDirection.InputOutput || parameter.Direction == ParameterDirection.Input) &&
|
|
|
(parameter.Value == null))
|
|
|
{
|
|
|
parameter.Value = DBNull.Value;
|
|
|
}
|
|
|
cmd.Parameters.Add(parameter);
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
#endregion
|
|
|
|
|
|
#region 参数转换
|
|
|
/// <summary>
|
|
|
/// 准备MysqlCommad参数
|
|
|
/// </summary>
|
|
|
/// <param name="cmd">MySqlCommand cmd对象</param>
|
|
|
/// <param name="conn">MySqlConnection conn对象</param>
|
|
|
/// <param name="trans">数据库事务</param>
|
|
|
/// <param name="cmdType">text or StoredProcedure</param>
|
|
|
/// <param name="cmdText">存储过程名</param>
|
|
|
/// <param name="cmdParms">SqlCommand的参数</param>
|
|
|
private static void PrepareMySqlCommand(MySql.Data.MySqlClient.MySqlCommand cmd, MySql.Data.MySqlClient.MySqlConnection conn, MySqlTransaction trans, CommandType cmdType, string cmdText, MySqlParameter[] cmdParms)
|
|
|
{
|
|
|
//连接状态是否打开
|
|
|
if (conn.State != ConnectionState.Open)
|
|
|
conn.Open();
|
|
|
|
|
|
cmd.Connection = conn;
|
|
|
cmd.CommandText = cmdText;
|
|
|
|
|
|
//Transact-SQL 事务
|
|
|
if (trans != null)
|
|
|
cmd.Transaction = trans;
|
|
|
cmd.CommandType = cmdType;
|
|
|
if (cmdParms != null)
|
|
|
{
|
|
|
foreach (MySqlParameter parm in cmdParms)
|
|
|
cmd.Parameters.Add(parm);
|
|
|
}
|
|
|
}
|
|
|
/// <summary>
|
|
|
/// 放回一个MakeMySqlParameter
|
|
|
/// </summary>
|
|
|
/// <param name="name">参数名字</param>
|
|
|
/// <param name="type">参数类型</param>
|
|
|
/// <param name="size">参数大小</param>
|
|
|
/// <param name="value">参数值</param>
|
|
|
/// <returns>SQLiteParameter的值</returns>
|
|
|
public static MySqlParameter MakeMySqlParameter(string name, MySqlDbType type, int size, object value)
|
|
|
{
|
|
|
MySqlParameter parm = new MySqlParameter(name, type, size);
|
|
|
parm.Value = value;
|
|
|
return parm;
|
|
|
}
|
|
|
/// <summary>
|
|
|
/// 创建MysqlParameter
|
|
|
/// </summary>
|
|
|
/// <param name="name">字段名称</param>
|
|
|
/// <param name="type">数据类型</param>
|
|
|
/// <param name="value">字段值</param>
|
|
|
/// <returns>返回类型为MySqlParameter</returns>
|
|
|
public static MySqlParameter MakeMySqlParameter(string name, MySqlDbType type, object value)
|
|
|
{
|
|
|
MySqlParameter parm = new MySqlParameter(name, type);
|
|
|
parm.Value = value;
|
|
|
return parm;
|
|
|
}
|
|
|
#endregion
|
|
|
|
|
|
#region C#调用Mysql的存储过程--自修改
|
|
|
#region 简单存储过程，返回结果中第一行第一列的值，要求第一行第一列有返回
|
|
|
/// <summary>
|
|
|
/// 简单存储过程，返回结果中第一行第一列的值，要求第一行第一列有返回
|
|
|
/// </summary>
|
|
|
/// <param name="ProcName">存储过程名</param>
|
|
|
/// <returns></returns>
|
|
|
public static int ExecuteProc(string ProcName)
|
|
|
{
|
|
|
using (MySqlConnection connection = new MySqlConnection(connectionString))
|
|
|
{
|
|
|
using (MySqlCommand cmd = new MySqlCommand(ProcName, connection))
|
|
|
{
|
|
|
try
|
|
|
{
|
|
|
cmd.CommandType = CommandType.StoredProcedure;
|
|
|
connection.Open();//int rows =
|
|
|
int result = int.Parse(cmd.ExecuteScalar().ToString());
|
|
|
return result;
|
|
|
}
|
|
|
catch (MySql.Data.MySqlClient.MySqlException e)
|
|
|
{
|
|
|
connection.Close();
|
|
|
throw new Exception(e.Message);
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
#endregion
|
|
|
|
|
|
#region 执行带参数的存储过程
|
|
|
/// <summary>
|
|
|
/// 执行带参数的存储过程
|
|
|
/// </summary>
|
|
|
/// <param name="ProcName">存储过程名</param>
|
|
|
/// <param name="cmdParms">参数MySqlParameter[] cmdParms</param>
|
|
|
/// <returns></returns>
|
|
|
public static string ExecuteProc(string ProcName, params MySqlParameter[] cmdParms)
|
|
|
{
|
|
|
using (MySqlConnection connection = new MySqlConnection(connectionString))
|
|
|
{
|
|
|
using (MySqlCommand cmd = new MySqlCommand())
|
|
|
{
|
|
|
try
|
|
|
{
|
|
|
cmd.CommandType = CommandType.StoredProcedure;
|
|
|
//cmd.CommandText = ProcName;
|
|
|
PrepareMySqlCommand(cmd, connection, null, CommandType.StoredProcedure, ProcName, cmdParms);
|
|
|
// PrepareCommand(cmd, connection, null, ProcName, cmdParms);
|
|
|
//connection.Open();//int rows =
|
|
|
string result = cmd.ExecuteScalar().ToString();
|
|
|
return result;
|
|
|
}
|
|
|
catch (MySql.Data.MySqlClient.MySqlException e)
|
|
|
{
|
|
|
connection.Close();
|
|
|
throw new Exception(e.Message);
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
#endregion
|
|
|
|
|
|
#region 执行带参数的存储过程(返回DateSet)
|
|
|
/// <summary>
|
|
|
/// 执行带参数的存储过程
|
|
|
/// </summary>
|
|
|
/// <param name="ProcName">存储过程名</param>
|
|
|
/// <param name="cmdParms">参数MySqlParameter[] cmdParms</param>
|
|
|
/// <returns></returns>
|
|
|
public static DataSet ExecuteProcDataset(string ProcName, params MySqlParameter[] cmdParms)
|
|
|
{
|
|
|
using (MySqlConnection connection = new MySqlConnection(connectionString))
|
|
|
{
|
|
|
MySqlCommand cmd = new MySqlCommand();
|
|
|
PrepareMySqlCommand(cmd, connection, null, CommandType.StoredProcedure, ProcName, cmdParms);
|
|
|
using (MySqlDataAdapter da = new MySqlDataAdapter(cmd))
|
|
|
{
|
|
|
DataSet ds = new DataSet();
|
|
|
try
|
|
|
{
|
|
|
da.Fill(ds, "ds");
|
|
|
cmd.Parameters.Clear();
|
|
|
}
|
|
|
catch (MySql.Data.MySqlClient.MySqlException ex)
|
|
|
{
|
|
|
throw new Exception(ex.Message);
|
|
|
}
|
|
|
return ds;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
|
|
|
public static DataSet ExecuteProcDataset(string ProcName)
|
|
|
{
|
|
|
using (MySqlConnection connection = new MySqlConnection(connectionString))
|
|
|
{
|
|
|
MySqlCommand cmd = new MySqlCommand();
|
|
|
PrepareMySqlCommand(cmd, connection, null, CommandType.StoredProcedure, ProcName, null);
|
|
|
using (MySqlDataAdapter da = new MySqlDataAdapter(cmd))
|
|
|
{
|
|
|
DataSet ds = new DataSet();
|
|
|
try
|
|
|
{
|
|
|
da.Fill(ds, "ds");
|
|
|
cmd.Parameters.Clear();
|
|
|
}
|
|
|
catch (MySql.Data.MySqlClient.MySqlException ex)
|
|
|
{
|
|
|
throw new Exception(ex.Message);
|
|
|
}
|
|
|
return ds;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
#endregion
|
|
|
#endregion
|
|
|
}
|
|
|
}
|