925 lines
34 KiB
C#
925 lines
34 KiB
C#
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using MySql.Data.MySqlClient;
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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;
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using System.Data.SqlClient;
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using System.Linq;
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using System.Web;
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namespace JJMediSys
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{
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public class DoDBMySql
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{
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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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public static string connectionString = "";
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public DoDBMySql()
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{
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}
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public static bool IsConnectionValid()
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{
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try
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{
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using (MySqlConnection connection = new MySqlConnection(connectionString))
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{
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connection.Open();
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if (connection.Ping())
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{
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MainForm.DBStat = 0;
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return true;
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}
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else
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{
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MainForm.DBStat = -1;
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return false;
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}
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}
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}
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catch (Exception ex)
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{
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MainForm.DBStat = -1;
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return false;
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}
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}
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public enum EffentNextType
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{
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/// <summary>
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/// 对其他语句无任何影响
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/// </summary>
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None,
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/// <summary>
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/// 当前语句必须为"SELECT COUNT(1) FROM .."格式，如果存在则继续执行，不存在回滚事务
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/// </summary>
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WhenHaveContine,
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/// <summary>
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/// 当前语句必须为"SELECT COUNT(1) FROM .."格式，如果不存在则继续执行，存在回滚事务
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/// </summary>
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WhenNoHaveContine,
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/// <summary>
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/// 当前语句影响到的行数必须大于0，否则回滚事务
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/// </summary>
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ExcuteEffectRows,
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/// <summary>
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/// 引发事件-当前语句必须为"SELECT COUNT(1) FROM .."格式，如果不存在则继续执行，存在回滚事务
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/// </summary>
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SolicitationEvent
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}
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public class CommandInfo
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{
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public object ShareObject = null;
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public object OriginalData = null;
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event EventHandler SsolicitationEvent;
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public event EventHandler SolicitationEvent
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{
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add
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{
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SsolicitationEvent += value;
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}
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remove
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{
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SsolicitationEvent -= value;
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}
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}
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public void OnSolicitationEvent()
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{
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SsolicitationEvent?.Invoke(this, new EventArgs());
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}
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public string CommandText;
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public System.Data.Common.DbParameter[] Parameters;
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public EffentNextType EffentNextType = EffentNextType.None;
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public CommandInfo()
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{
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}
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public CommandInfo(string sqlText, SqlParameter[] para)
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{
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this.CommandText = sqlText;
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this.Parameters = para;
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}
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public CommandInfo(string sqlText, SqlParameter[] para, EffentNextType type)
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{
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this.CommandText = sqlText;
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this.Parameters = para;
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this.EffentNextType = type;
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}
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}
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#region 公用方法
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/// <summary>
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/// 得到最大值
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/// </summary>
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/// <param name="FieldName"></param>
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/// <param name="TableName"></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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/// 是否存在
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/// </summary>
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/// <param name="strSql"></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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/// 是否存在（基于MySqlParameter）
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/// </summary>
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/// <param name="strSql"></param>
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/// <param name="cmdParms"></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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/// 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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MainForm.DBStat = -1;
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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 long ExecuteSqlReturnID(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 cmd.LastInsertedId;
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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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MainForm.DBStat = -1;
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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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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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MainForm.DBStat = -1;
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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 connection = new MySqlConnection(connectionString))
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{
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connection.Open();
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MySqlCommand cmd = new MySqlCommand
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{
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Connection = connection
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};
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MySqlTransaction tx = connection.BeginTransaction();
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cmd.Transaction = tx;
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string strsql = "";
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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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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 (Exception aaa)
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{
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// Tools.WriteTextLog("批量写入失败:" + aaa.Message + "_SQL:" + strsql, "error");
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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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{
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Value = content
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};
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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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MainForm.DBStat = -1;
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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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{
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Value = content
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};
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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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MainForm.DBStat = -1;
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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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|||
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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>
|
|||
|
|
public static int ExecuteSqlInsertImg(string strSQL, byte[] fs)
|
|||
|
|
{
|
|||
|
|
using (MySqlConnection connection = new MySqlConnection(connectionString))
|
|||
|
|
{
|
|||
|
|
MySqlCommand cmd = new MySqlCommand(strSQL, connection);
|
|||
|
|
MySql.Data.MySqlClient.MySqlParameter myParameter = new MySql.Data.MySqlClient.MySqlParameter("@fs", SqlDbType.Image)
|
|||
|
|
{
|
|||
|
|
Value = fs
|
|||
|
|
};
|
|||
|
|
cmd.Parameters.Add(myParameter);
|
|||
|
|
try
|
|||
|
|
{
|
|||
|
|
connection.Open();
|
|||
|
|
int rows = cmd.ExecuteNonQuery();
|
|||
|
|
return rows;
|
|||
|
|
}
|
|||
|
|
catch (MySql.Data.MySqlClient.MySqlException e)
|
|||
|
|
{
|
|||
|
|
MainForm.DBStat = -1;
|
|||
|
|
throw e;
|
|||
|
|
}
|
|||
|
|
finally
|
|||
|
|
{
|
|||
|
|
cmd.Dispose();
|
|||
|
|
connection.Close();
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/// <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>
|
|||
|
|
/// <returns>查询结果（object）</returns>
|
|||
|
|
public static object GetSingle(string SQLString)
|
|||
|
|
{
|
|||
|
|
using (MySqlConnection connection = new MySqlConnection(connectionString))
|
|||
|
|
{
|
|||
|
|
using (MySqlCommand cmd = new MySqlCommand(SQLString, connection))
|
|||
|
|
{
|
|||
|
|
try
|
|||
|
|
{
|
|||
|
|
connection.Open();
|
|||
|
|
object obj = cmd.ExecuteScalar();
|
|||
|
|
if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
|
|||
|
|
{
|
|||
|
|
return null;
|
|||
|
|
}
|
|||
|
|
else
|
|||
|
|
{
|
|||
|
|
return obj;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
catch (MySql.Data.MySqlClient.MySqlException e)
|
|||
|
|
{
|
|||
|
|
connection.Close();
|
|||
|
|
MainForm.DBStat = -1;
|
|||
|
|
throw e;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
public static object GetSingle(string SQLString, int Times)
|
|||
|
|
{
|
|||
|
|
using (MySqlConnection connection = new MySqlConnection(connectionString))
|
|||
|
|
{
|
|||
|
|
using (MySqlCommand cmd = new MySqlCommand(SQLString, connection))
|
|||
|
|
{
|
|||
|
|
try
|
|||
|
|
{
|
|||
|
|
connection.Open();
|
|||
|
|
cmd.CommandTimeout = Times;
|
|||
|
|
object obj = cmd.ExecuteScalar();
|
|||
|
|
if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value)))
|
|||
|
|
{
|
|||
|
|
return null;
|
|||
|
|
}
|
|||
|
|
else
|
|||
|
|
{
|
|||
|
|
return obj;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
catch (MySql.Data.MySqlClient.MySqlException e)
|
|||
|
|
{
|
|||
|
|
connection.Close();
|
|||
|
|
MainForm.DBStat = -1;
|
|||
|
|
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)
|
|||
|
|
{
|
|||
|
|
MainForm.DBStat = -1;
|
|||
|
|
throw e;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
/// <summary>
|
|||
|
|
/// 执行查询语句，返回DataSet
|
|||
|
|
/// </summary>
|
|||
|
|
/// <param name="SQLString">查询语句</param>
|
|||
|
|
/// <returns>DataSet</returns>
|
|||
|
|
public static DataSet Query(string SQLString)
|
|||
|
|
{
|
|||
|
|
using (MySqlConnection connection = new MySqlConnection(connectionString))
|
|||
|
|
{
|
|||
|
|
DataSet ds = new DataSet();
|
|||
|
|
try
|
|||
|
|
{
|
|||
|
|
connection.Open();
|
|||
|
|
MySqlDataAdapter command = new MySqlDataAdapter(SQLString, connection);
|
|||
|
|
command.Fill(ds, "ds");
|
|||
|
|
}
|
|||
|
|
catch (MySql.Data.MySqlClient.MySqlException ex)
|
|||
|
|
{
|
|||
|
|
MainForm.DBStat = -1;
|
|||
|
|
throw new Exception(ex.Message);
|
|||
|
|
}
|
|||
|
|
return ds;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
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)
|
|||
|
|
{
|
|||
|
|
MainForm.DBStat = -1;
|
|||
|
|
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>
|
|||
|
|
/// <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 int ExecuteSqlTran(System.Collections.Generic.List<CommandInfo> cmdList)
|
|||
|
|
{
|
|||
|
|
using (MySqlConnection conn = new MySqlConnection(connectionString))
|
|||
|
|
{
|
|||
|
|
conn.Open();
|
|||
|
|
using (MySqlTransaction trans = conn.BeginTransaction())
|
|||
|
|
{
|
|||
|
|
MySqlCommand cmd = new MySqlCommand();
|
|||
|
|
try
|
|||
|
|
{
|
|||
|
|
int count = 0;
|
|||
|
|
//循环
|
|||
|
|
foreach (CommandInfo myDE in cmdList)
|
|||
|
|
{
|
|||
|
|
string cmdText = myDE.CommandText;
|
|||
|
|
MySqlParameter[] cmdParms = (MySqlParameter[])myDE.Parameters;
|
|||
|
|
PrepareCommand(cmd, conn, trans, cmdText, cmdParms);
|
|||
|
|
|
|||
|
|
if (myDE.EffentNextType == EffentNextType.WhenHaveContine || myDE.EffentNextType == EffentNextType.WhenNoHaveContine)
|
|||
|
|
{
|
|||
|
|
if (myDE.CommandText.ToLower().IndexOf("count(") == -1)
|
|||
|
|
{
|
|||
|
|
trans.Rollback();
|
|||
|
|
return 0;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
object obj = cmd.ExecuteScalar();
|
|||
|
|
bool isHave = false;
|
|||
|
|
if (obj == null && obj == DBNull.Value)
|
|||
|
|
{
|
|||
|
|
isHave = false;
|
|||
|
|
}
|
|||
|
|
isHave = Convert.ToInt32(obj) > 0;
|
|||
|
|
|
|||
|
|
if (myDE.EffentNextType == EffentNextType.WhenHaveContine && !isHave)
|
|||
|
|
{
|
|||
|
|
trans.Rollback();
|
|||
|
|
return 0;
|
|||
|
|
}
|
|||
|
|
if (myDE.EffentNextType == EffentNextType.WhenNoHaveContine && isHave)
|
|||
|
|
{
|
|||
|
|
trans.Rollback();
|
|||
|
|
return 0;
|
|||
|
|
}
|
|||
|
|
continue;
|
|||
|
|
}
|
|||
|
|
int val = cmd.ExecuteNonQuery();
|
|||
|
|
count += val;
|
|||
|
|
if (myDE.EffentNextType == EffentNextType.ExcuteEffectRows && val == 0)
|
|||
|
|
{
|
|||
|
|
trans.Rollback();
|
|||
|
|
return 0;
|
|||
|
|
}
|
|||
|
|
cmd.Parameters.Clear();
|
|||
|
|
}
|
|||
|
|
trans.Commit();
|
|||
|
|
return count;
|
|||
|
|
}
|
|||
|
|
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(System.Collections.Generic.List<CommandInfo> 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 (CommandInfo myDE in SQLStringList)
|
|||
|
|
{
|
|||
|
|
string cmdText = myDE.CommandText;
|
|||
|
|
MySqlParameter[] cmdParms = (MySqlParameter[])myDE.Parameters;
|
|||
|
|
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>
|
|||
|
|
/// <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="strSQL">查询语句</param>
|
|||
|
|
/// <returns>MySqlDataReader</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>
|
|||
|
|
/// <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;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
|
|||
|
|
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);
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
public static object ExecuteProc(string SQLString, params MySqlParameter[] cmdParms)
|
|||
|
|
{
|
|||
|
|
using (MySqlConnection connection = new MySqlConnection(connectionString))
|
|||
|
|
{
|
|||
|
|
using (MySqlCommand cmd = new MySqlCommand())
|
|||
|
|
{
|
|||
|
|
try
|
|||
|
|
{
|
|||
|
|
|
|||
|
|
PrepareCommand(cmd, connection, null, SQLString, cmdParms);
|
|||
|
|
cmd.CommandType = CommandType.StoredProcedure;
|
|||
|
|
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;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
#endregion
|
|||
|
|
|
|||
|
|
}
|
|||
|
|
}
|