using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.Configuration;
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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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namespace GasolineBlend.DAL
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{
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public abstract class BaseMySQLDAL
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{
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public static string connectionString = ConfigurationManager.ConnectionStrings["connStrMySQL"].ConnectionString;
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public BaseMySQLDAL()
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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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// 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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// 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 =
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// 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 =
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// 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 =
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// 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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///// <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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//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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// {
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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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///// 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 )
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///// </summary>
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///// <param name="strSQL">查询语句</param>
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///// <returns>MySqlDataReader</returns>
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//public static MySqlDataReader ExecuteReader(string strSQL)
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//{
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// MySqlConnection connection = new MySqlConnection(connectionString);
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// MySqlCommand cmd = new MySqlCommand(strSQL, connection);
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// try
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// {
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// connection.Open();
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// MySqlDataReader myReader = cmd.ExecuteReader(CommandBehavior.CloseConnection);
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// return myReader;
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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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//}
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///// <summary>
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///// 执行查询语句，返回DataSet
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///// </summary>
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///// <param name="SQLString">查询语句</param>
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///// <returns>DataSet</returns>
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//public static DataSet Query(string SQLString)
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//{
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// using (MySqlConnection connection = new MySqlConnection(connectionString))
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// {
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// DataSet ds = new DataSet();
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// try
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// {
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// connection.Open();
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// MySqlDataAdapter command = new MySqlDataAdapter(SQLString, connection);
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// command.Fill(ds, "ds");
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// }
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// catch (MySql.Data.MySqlClient.MySqlException ex)
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// {
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// throw new Exception(ex.Message);
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// }
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// return ds;
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// }
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//}
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//public static DataSet Query(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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// DataSet ds = new DataSet();
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// try
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// {
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// connection.Open();
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// MySqlDataAdapter command = new MySqlDataAdapter(SQLString, connection);
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// command.SelectCommand.CommandTimeout = Times;
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// command.Fill(ds, "ds");
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// }
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// catch (MySql.Data.MySqlClient.MySqlException ex)
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// {
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// throw new Exception(ex.Message);
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// }
|
|
// return ds;
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// }
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//}
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//#endregion
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|
//#region 执行带参数的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, params MySqlParameter[] cmdParms)
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//{
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// using (MySqlConnection connection = new MySqlConnection(connectionString))
|
// {
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// using (MySqlCommand cmd = new MySqlCommand())
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// {
|
// try
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// {
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// PrepareCommand(cmd, connection, null, SQLString, cmdParms);
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// int rows = cmd.ExecuteNonQuery();
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// cmd.Parameters.Clear();
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// return rows;
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// }
|
// catch (MySql.Data.MySqlClient.MySqlException e)
|
// {
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// throw e;
|
// }
|
// }
|
// }
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//}
|
|
|
///// <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>
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//public static void ExecuteSqlTran(Hashtable 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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// using (MySqlTransaction trans = conn.BeginTransaction())
|
// {
|
// MySqlCommand cmd = new MySqlCommand();
|
// try
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// {
|
// //循环
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// foreach (DictionaryEntry myDE in SQLStringList)
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// {
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// string cmdText = myDE.Key.ToString();
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// MySqlParameter[] cmdParms = (MySqlParameter[]) myDE.Value;
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// PrepareCommand(cmd, conn, trans, cmdText, cmdParms);
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// int val = cmd.ExecuteNonQuery();
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// cmd.Parameters.Clear();
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// }
|
|
// trans.Commit();
|
// }
|
// catch
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// {
|
// trans.Rollback();
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// 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)
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////{
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//// using (MySqlConnection conn = new MySqlConnection(connectionString))
|
//// {
|
//// conn.Open();
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//// using (MySqlTransaction trans = conn.BeginTransaction())
|
//// {
|
//// MySqlCommand cmd = new MySqlCommand();
|
//// try
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//// { int count = 0;
|
//// //循环
|
//// foreach (CommandInfo myDE in cmdList)
|
//// {
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//// string cmdText = myDE.CommandText;
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//// MySqlParameter[] cmdParms = (MySqlParameter[])myDE.Parameters;
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//// PrepareCommand(cmd, conn, trans, cmdText, cmdParms);
|
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//// if (myDE.EffentNextType == EffentNextType.WhenHaveContine || myDE.EffentNextType == EffentNextType.WhenNoHaveContine)
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//// {
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//// if (myDE.CommandText.ToLower().IndexOf("count(") == -1)
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//// {
|
//// trans.Rollback();
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//// return 0;
|
//// }
|
|
//// object obj = cmd.ExecuteScalar();
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//// bool isHave = false;
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//// if (obj == null && obj == DBNull.Value)
|
//// {
|
//// isHave = false;
|
//// }
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//// 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(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;
|
// }
|
|
//}
|
|
///// <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);
|
// }
|
// }
|
//}
|
|
//#endregion
|
}
|
}
|
