MySQL数据库帮助类：
using System; using System.Collections; using System.Collections.Specialized; using System.Data; using MySql.Data.MySqlClient; using System.Configuration; using System.Data.Common; using System.Collections.Generic; using System.Text; namespace DBUtility { /// <summary> /// 数据访问抽象基础类 /// Copyright (C) Maticsoft /// </summary> public abstract class DbHelperMySQL { //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. public static readonly string connectionString = ConfigurationManager.ConnectionStrings["MySqlStr"].ConnectionString; public DbHelperMySQL() { } /// <summary> /// DataTable to tree 根据数据id,txt生成对应的json数据格式 /// </summary> /// <param name="dt"></param> /// <param name="pField">Parentid</param> /// <param name="pValue">Parentid value</param> /// <param name="kField">pkid </param> /// <returns></returns> public static string TableToEasyUITreeJson(DataTable dt, string pField, string pValue, string pkid, string pktext, string url) { try { StringBuilder sb = new StringBuilder(); string filter = String.Format(" {0}='{1}' ", pField, pValue);//获取*目录 if (pValue == string.Empty || pValue == null) { filter = String.Format("{0}='{1}' or {0} is null", pField, pValue); } //filter = "Parentid is null"; DataRow[] drs = dt.Select(filter); if (drs.Length < 1) return ""; sb.Append("<UL id='treeList'>\n"); foreach (DataRow dr in drs) { string pcv = dr[pkid].ToString(); sb.AppendFormat("<li id='tree{0}'><a href='list.aspx?typeId={0}&ptypeId=#$' title='{1}'>\n", dr[pkid].ToString(), dr[pktext].ToString()); sb.AppendFormat("{0}\n</a>", dr[pktext].ToString()); //sb.Append("\"checked\":true,"); //if (pValue == null || pValue == string.Empty)//根节点没有url //{ // sb.AppendFormat("\"attributes\":\"{0}\"", ""); //} //else //{ // sb.AppendFormat("\"attributes\":\"{0}\"", url); //} sb.Append(TableToEasyUITreeJson(dt, pField, pcv, pkid, pktext, url).TrimEnd(',')); sb.Append("</li>\n"); } //if (sb.ToString().EndsWith(",")) //{ // sb.Remove(sb.Length - 1, 1); //} sb.Append("</ul>\n"); return sb.ToString(); } catch (Exception) { return ""; } } public static string TableToEasyUITreeJson(DataTable dt, string pField, string pValue, string pkid) { try { StringBuilder sb = new StringBuilder(); string filter = String.Format(" {0}='{1}' ", pField, pValue);//获取*目录 if (pValue == string.Empty || pValue == null) { filter = String.Format("{0}='{1}' or {0} is null", pField, pValue); } //filter = "Parentid is null"; DataRow[] drs = dt.Select(filter); if (drs.Length < 1) return ""; //sb.AppendFormat("{0},", pValue); foreach (DataRow dr in drs) { string pcv = dr[pkid].ToString(); sb.AppendFormat("{0},", dr[pkid].ToString()); sb.Append(TableToEasyUITreeJson(dt, pField, pcv, pkid)); } return sb.ToString(); } catch (Exception) { return ""; } } public static DataTable getDataTable(string sql, params MySqlParameter[] pms) { DataTable dt; try { using (MySqlConnection connection = new MySqlConnection(connectionString)) { using (MySqlCommand cmd = new MySqlCommand()) { cmd.Connection = connection; cmd.CommandText = sql; if (connection.State != ConnectionState.Open) connection.Open(); if (pms != null) { foreach (MySqlParameter parameter in pms) { if ((parameter.Direction == ParameterDirection.InputOutput || parameter.Direction == ParameterDirection.Input) && (parameter.Value == null)) { parameter.Value = DBNull.Value; } cmd.Parameters.Add(parameter); } } MySqlDataAdapter mda = new MySqlDataAdapter(cmd); dt = new DataTable(); mda.Fill(dt); } } } catch (MySql.Data.MySqlClient.MySqlException e) { throw e; } return dt; } #region 公用方法 /// <summary> /// 得到最大值 /// </summary> /// <param name="FieldName"></param> /// <param name="TableName"></param> /// <returns></returns> public static int GetMaxID(string FieldName, string TableName) { string strsql = "select max(" + FieldName + ")+1 from " + TableName; object obj = GetSingle(strsql); if (obj == null) { return 1; } else { return int.Parse(obj.ToString()); } } /// <summary> /// 是否存在 /// </summary> /// <param name="strSql"></param> /// <returns></returns> public static bool Exists(string strSql) { object obj = GetSingle(strSql); int cmdresult; if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value))) { cmdresult = 0; } else { cmdresult = int.Parse(obj.ToString()); } if (cmdresult == 0) { return false; } else { return true; } } /// <summary> /// 是否存在（基于MySqlParameter） /// </summary> /// <param name="strSql"></param> /// <param name="cmdParms"></param> /// <returns></returns> public static bool Exists(string strSql, params MySqlParameter[] cmdParms) { object obj = GetSingle(strSql, cmdParms); int cmdresult; if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value))) { cmdresult = 0; } else { cmdresult = int.Parse(obj.ToString()); } if (cmdresult == 0) { return false; } else { return true; } } #endregion #region 执行简单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) { using (MySqlConnection connection = new MySqlConnection(connectionString)) { using (MySqlCommand cmd = new MySqlCommand(SQLString, connection)) { try { connection.Open(); int rows = cmd.ExecuteNonQuery(); return rows; } catch (MySql.Data.MySqlClient.MySqlException e) { connection.Close(); throw e; } } } } /// <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 ExecuteSqlConn(string SQLString,string connectStr) { using (MySqlConnection connection = new MySqlConnection(connectStr)) { using (MySqlCommand cmd = new MySqlCommand(SQLString, connection)) { try { connection.Open(); int rows = cmd.ExecuteNonQuery(); return rows; } catch (MySql.Data.MySqlClient.MySqlException e) { connection.Close(); throw e; } } } } public static int ExecuteSqlByTime(string SQLString, int Times) { using (MySqlConnection connection = new MySqlConnection(connectionString)) { using (MySqlCommand cmd = new MySqlCommand(SQLString, connection)) { try { connection.Open(); cmd.CommandTimeout = Times; int rows = cmd.ExecuteNonQuery(); return rows; } catch (MySql.Data.MySqlClient.MySqlException e) { connection.Close(); throw e; } } } } /// <summary> /// 执行MySql和Oracle滴混合事务 /// </summary> /// <param name="list">SQL命令行列表</param> /// <param name="oracleCmdSqlList">Oracle命令行列表</param> /// <returns>执行结果 0-由于SQL造成事务失败 -1 由于Oracle造成事务失败 1-整体事务执行成功</returns> public static int ExecuteSqlTran(List<CommandInfo> list, List<CommandInfo> oracleCmdSqlList) { using (MySqlConnection conn = new MySqlConnection(connectionString)) { conn.Open(); MySqlCommand cmd = new MySqlCommand(); cmd.Connection = conn; MySqlTransaction tx = conn.BeginTransaction(); cmd.Transaction = tx; try { foreach (CommandInfo myDE in list) { string cmdText = myDE.CommandText; MySqlParameter[] cmdParms = (MySqlParameter[])myDE.Parameters; PrepareCommand(cmd, conn, tx, cmdText, cmdParms); if (myDE.EffentNextType == EffentNextType.SolicitationEvent) { if (myDE.CommandText.ToLower().IndexOf("count(") == -1) { tx.Rollback(); throw new Exception("违背要求"+myDE.CommandText+"必须符合select count(..的格式"); //return 0; } object obj = cmd.ExecuteScalar(); bool isHave = false; if (obj == null && obj == DBNull.Value) { isHave = false; } isHave = Convert.ToInt32(obj) > 0; if (isHave) { //引发事件 myDE.OnSolicitationEvent(); } } if (myDE.EffentNextType == EffentNextType.WhenHaveContine || myDE.EffentNextType == EffentNextType.WhenNoHaveContine) { if (myDE.CommandText.ToLower().IndexOf("count(") == -1) { tx.Rollback(); throw new Exception("SQL:违背要求" + myDE.CommandText + "必须符合select count(..的格式"); //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) { tx.Rollback(); throw new Exception("SQL:违背要求" + myDE.CommandText + "返回值必须大于0"); //return 0; } if (myDE.EffentNextType == EffentNextType.WhenNoHaveContine && isHave) { tx.Rollback(); throw new Exception("SQL:违背要求" + myDE.CommandText + "返回值必须等于0"); //return 0; } continue; } int val = cmd.ExecuteNonQuery(); if (myDE.EffentNextType == EffentNextType.ExcuteEffectRows && val == 0) { tx.Rollback(); throw new Exception("SQL:违背要求" + myDE.CommandText + "必须有影响行"); //return 0; } cmd.Parameters.Clear(); } string oraConnectionString = ConfigurationManager.ConnectionStrings["MySqlStr"].ConnectionString; bool res = OracleHelper.ExecuteSqlTran(oraConnectionString, oracleCmdSqlList); if (!res) { tx.Rollback(); throw new Exception("执行失败"); // return -1; } tx.Commit(); return 1; } catch (MySql.Data.MySqlClient.MySqlException e) { tx.Rollback(); throw e; } catch (Exception e) { tx.Rollback(); throw e; } } } /// <summary> /// 执行多条SQL语句，实现数据库事务。 /// </summary> /// <param name="SQLStringList">多条SQL语句</param> public static int ExecuteSqlTran(List<String> SQLStringList) { using (MySqlConnection conn = new MySqlConnection(connectionString)) { conn.Open(); MySqlCommand cmd = new MySqlCommand(); cmd.Connection = conn; MySqlTransaction tx = conn.BeginTransaction(); cmd.Transaction = tx; try { int count = 0; for (int n = 0; n < SQLStringList.Count; n++) { string strsql = SQLStringList[n]; if (strsql.Trim().Length > 1) { cmd.CommandText = strsql; count += cmd.ExecuteNonQuery(); } } tx.Commit(); return count; } catch(Exception ex) { tx.Rollback(); throw ex; return 0; } } } /// <summary> /// 执行带一个存储过程参数的的SQL语句。 /// </summary> /// <param name="SQLString">SQL语句</param> /// <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> /// <returns>影响的记录数</returns> public static int ExecuteSql(string SQLString, string content) { using (MySqlConnection connection = new MySqlConnection(connectionString)) { MySqlCommand cmd = new MySqlCommand(SQLString, connection); MySql.Data.MySqlClient.MySqlParameter myParameter = new MySql.Data.MySqlClient.MySqlParameter("@content", SqlDbType.NText); myParameter.Value = content; cmd.Parameters.Add(myParameter); try { connection.Open(); int rows = cmd.ExecuteNonQuery(); return rows; } catch (MySql.Data.MySqlClient.MySqlException e) { throw e; } finally { cmd.Dispose(); connection.Close(); } } } /// <summary> /// 执行带一个存储过程参数的的SQL语句。 /// </summary> /// <param name="SQLString">SQL语句</param> /// <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> /// <returns>影响的记录数</returns> public static object ExecuteSqlGet(string SQLString, string content) { using (MySqlConnection connection = new MySqlConnection(connectionString)) { MySqlCommand cmd = new MySqlCommand(SQLString, connection); MySql.Data.MySqlClient.MySqlParameter myParameter = new MySql.Data.MySqlClient.MySqlParameter("@content", SqlDbType.NText); myParameter.Value = content; cmd.Parameters.Add(myParameter); 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) { throw e; } finally { cmd.Dispose(); connection.Close(); } } } /// <summary> /// 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) /// </summary> /// <param name="strSQL">SQL语句</param> /// <param name="fs">图像字节,数据库的字段类型为image的情况</param> /// <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); myParameter.Value = fs; cmd.Parameters.Add(myParameter); try { connection.Open(); int rows = cmd.ExecuteNonQuery(); return rows; } catch (MySql.Data.MySqlClient.MySqlException e) { 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(); 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(); 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,string connectionStr) { MySqlConnection connection = new MySqlConnection(connectionStr); 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) { throw new Exception(ex.Message); } return ds; } } /// <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 QueryConn(string SQLString,string conStr) { using (MySqlConnection connection = new MySqlConnection(conStr)) { DataSet ds = new DataSet(); try { connection.Open(); MySqlDataAdapter command = new MySqlDataAdapter(SQLString, connection); command.Fill(ds, "ds"); } catch (MySql.Data.MySqlClient.MySqlException ex) { throw new Exception(ex.Message); } finally { connection.Close(); } 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) { 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; } cmd.Dispose(); } connection.Close(); } } /// <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); } } } #endregion /// <summary> // @tblName nvarchar(200), ----要显示的表或多个表的连接 //@fldName nvarchar(500) = '*', ----要显示的字段列表 //@pageSize int = 1, ----每页显示的记录个数 //@page int = 10, ----要显示那一页的记录 //@pageCount int = 1 output, ----查询结果分页后的总页数 //@Counts int = 1 output, ----查询到的记录数 //@fldSort nvarchar(200) = null, ----排序字段列表或条件 //@Sort bit = 1, ----排序方法，0为升序，1为降序(如果是多字段排列Sort指代最后一个排序字段的排列顺序(最后一个排序字段不加排序标记)--程序传参如：' SortA Asc,SortB Desc,SortC ') //@strCondition nvarchar(1000) = null, ----查询条件,不需where //@ID nvarchar(150), ----主表的主键 //@Dist bit = 0 ----是否添加查询字段的 DISTINCT 默认0不添加/1添加 /// </summary> /// <param name="tblName"></param> /// <param name="fldName"></param> /// <param name="pagesize"></param> /// <param name="page"></param> /// <param name="pagecout"></param> /// <param name="counts"></param> /// <param name="fldSort"></param> /// <param name="Sort"></param> /// <param name="strCondition"></param> /// <param name="ID"></param> /// <param name="Dist"></param> /// <returns></returns> public static DataTable RunProcedure_GetListPage( string tblName, string fldName, int pagesize, int page, ref int pagecout, ref int counts, string fldSort, int Sort, string strCondition, string ID, int Dist ) { DataTable dt; try { using (MySqlConnection connection = new MySqlConnection(connectionString)) { connection.Open(); MySqlCommand cmd = new MySqlCommand(); cmd.Connection = connection; cmd.CommandText = "P_ListPage"; cmd.CommandType = CommandType.StoredProcedure; IDataParameter[] parameters = new IDataParameter[] { new MySqlParameter("?p_table_name", MySqlDbType.VarChar, 100), new MySqlParameter("?p_fields", MySqlDbType.VarChar, 100), new MySqlParameter("?p_page_size", MySqlDbType.Int32), new MySqlParameter("?p_page_now", MySqlDbType.Int32), new MySqlParameter("?p_pagecount", MySqlDbType.Int32), new MySqlParameter("?p_totals", MySqlDbType.Int32), new MySqlParameter("?p_fldSort", MySqlDbType.VarChar, 200), new MySqlParameter("?p_sort", MySqlDbType.Int32), new MySqlParameter("?p_where_string", MySqlDbType.VarChar, 200), new MySqlParameter("?p_id", MySqlDbType.VarChar, 200) }; parameters[0].Value = tblName; parameters[1].Value = fldName; parameters[2].Value = pagesize; parameters[3].Value = page; parameters[4].Direction = ParameterDirection.Output; parameters[5].Direction = ParameterDirection.Output; parameters[6].Value = fldSort; parameters[7].Value = Sort; parameters[8].Value = " 1=1 "; if (strCondition != null) { parameters[8].Value = " 1=1 and " + strCondition; } parameters[9].Value = ID; for (int i = 0; i < parameters.Length; i++) { cmd.Parameters.Add(parameters[i]); } MySqlDataAdapter dp = new MySqlDataAdapter(cmd); DataSet ds = new DataSet(); dp.Fill(ds); pagecout = int.Parse(ds.Tables[1].Rows[0]["p_pagecount"].ToString()); counts = int.Parse(ds.Tables[1].Rows[0]["p_totals"].ToString()); dt = ds.Tables[0]; } } catch (Exception ex) { throw ex; } return dt; } /// <summary> // @tblName nvarchar(200), ----要显示的表或多个表的连接 //@fldName nvarchar(500) = '*', ----要显示的字段列表 //@pageSize int = 1, ----每页显示的记录个数 //@page int = 10, ----要显示那一页的记录 //@pageCount int = 1 output, ----查询结果分页后的总页数 //@Counts int = 1 output, ----查询到的记录数 //@fldSort nvarchar(200) = null, ----排序字段列表或条件 //@Sort bit = 1, ----排序方法，0为升序，1为降序(如果是多字段排列Sort指代最后一个排序字段的排列顺序(最后一个排序字段不加排序标记)--程序传参如：' SortA Asc,SortB Desc,SortC ') //@strCondition nvarchar(1000) = null, ----查询条件,不需where //@ID nvarchar(150), ----主表的主键 //@Dist bit = 0 ----是否添加查询字段的 DISTINCT 默认0不添加/1添加 /// </summary> /// <param name="tblName"></param> /// <param name="fldName"></param> /// <param name="pagesize"></param> /// <param name="page"></param> /// <param name="pagecout"></param> /// <param name="counts"></param> /// <param name="fldSort"></param> /// <param name="Sort"></param> /// <param name="strCondition"></param> /// <param name="ID"></param> /// <param name="Dist"></param> /// <returns></returns> public static DataTable RunProcedure_GetListPagebySort( string tblName, string fldName, int pagesize, int page, ref int pagecout, ref int counts, string p_order_string, string strCondition, string ID, int Dist ) { DataTable dt; try { using (MySqlConnection connection = new MySqlConnection(connectionString)) { connection.Open(); MySqlCommand cmd = new MySqlCommand(); cmd.Connection = connection; cmd.CommandText = "P_ListPagebySort"; cmd.CommandType = CommandType.StoredProcedure; IDataParameter[] parameters = new IDataParameter[] { new MySqlParameter("?p_table_name", MySqlDbType.VarChar, 100), new MySqlParameter("?p_fields", MySqlDbType.VarChar, 100), new MySqlParameter("?p_page_size", MySqlDbType.Int32), new MySqlParameter("?p_page_now", MySqlDbType.Int32), new MySqlParameter("?p_pagecount", MySqlDbType.Int32), new MySqlParameter("?p_totals", MySqlDbType.Int32), new MySqlParameter("?p_order_string", MySqlDbType.VarChar, 200), new MySqlParameter("?p_where_string", MySqlDbType.VarChar, 200), new MySqlParameter("?p_id", MySqlDbType.VarChar, 200) }; parameters[0].Value = tblName; parameters[1].Value = fldName; parameters[2].Value = pagesize; parameters[3].Value = page; parameters[4].Direction = ParameterDirection.Output; parameters[5].Direction = ParameterDirection.Output; parameters[6].Value = p_order_string; parameters[7].Value = " 1=1 "; if (strCondition != null) { parameters[7].Value = " 1=1 and " + strCondition; } parameters[8].Value = ID; for (int i = 0; i < parameters.Length; i++) { cmd.Parameters.Add(parameters[i]); } MySqlDataAdapter dp = new MySqlDataAdapter(cmd); DataSet ds = new DataSet(); dp.Fill(ds); pagecout = int.Parse(ds.Tables[1].Rows[0]["p_pagecount"].ToString()); counts = int.Parse(ds.Tables[1].Rows[0]["p_totals"].ToString()); dt = ds.Tables[0]; } } catch (Exception ex) { dt = new DataTable(); } return dt; } /// <summary> // @tblName nvarchar(200), ----要显示的表或多个表的连接 //@fldName nvarchar(500) = '*', ----要显示的字段列表 //@pageSize int = 1, ----每页显示的记录个数 //@page int = 10, ----要显示那一页的记录 //@pageCount int = 1 output, ----查询结果分页后的总页数 //@Counts int = 1 output, ----查询到的记录数 //@fldSort nvarchar(200) = null, ----排序字段列表或条件 //@Sort bit = 1, ----排序方法，0为升序，1为降序(如果是多字段排列Sort指代最后一个排序字段的排列顺序(最后一个排序字段不加排序标记)--程序传参如：' SortA Asc,SortB Desc,SortC ') //@strCondition nvarchar(1000) = null, ----查询条件,不需where //@ID nvarchar(150), ----主表的主键 //@Dist bit = 0 ----是否添加查询字段的 DISTINCT 默认0不添加/1添加 /// </summary> /// <param name="tblName"></param> /// <param name="fldName"></param> /// <param name="pagesize"></param> /// <param name="page"></param> /// <param name="pagecout"></param> /// <param name="counts"></param> /// <param name="fldSort"></param> /// <param name="Sort"></param> /// <param name="strCondition"></param> /// <param name="ID"></param> /// <param name="Dist"></param> /// <returns></returns> public static DataTable RunProcedure_GetListPagebyGroup( string tblName, string fldName, int pagesize, int page, ref int pagecout, ref int selfcounts, ref int counts, string p_order_string, string strCondition, string strgroup, string ID, int Dist ) { DataTable dt; try { using (MySqlConnection connection = new MySqlConnection(connectionString)) { connection.Open(); MySqlCommand cmd = new MySqlCommand(); cmd.Connection = connection; cmd.CommandText = "P_ListPagebyGroup"; cmd.CommandType = CommandType.StoredProcedure; IDataParameter[] parameters = new IDataParameter[] { new MySqlParameter("?p_table_name", MySqlDbType.VarChar, 100), new MySqlParameter("?p_fields", MySqlDbType.VarChar, 1000), new MySqlParameter("?p_page_size", MySqlDbType.Int32), new MySqlParameter("?p_page_now", MySqlDbType.Int32), new MySqlParameter("?p_pagecount", MySqlDbType.Int32), new MySqlParameter("?p_totals", MySqlDbType.Int32), new MySqlParameter("?p_order_string", MySqlDbType.VarChar, 200), new MySqlParameter("?p_where_string", MySqlDbType.VarChar, 200), new MySqlParameter("?p_group_string", MySqlDbType.VarChar, 200), new MySqlParameter("?p_id", MySqlDbType.VarChar, 200) }; parameters[0].Value = tblName; parameters[1].Value = fldName; parameters[2].Value = pagesize; parameters[3].Value = page; parameters[4].Direction = ParameterDirection.Output; parameters[5].Direction = ParameterDirection.Output; parameters[6].Value = p_order_string; parameters[7].Value = " 1=1 "; if (strCondition != null) { parameters[7].Value = " 1=1 and " + strCondition; } if (strgroup != null && strgroup !="") { parameters[8].Value = strgroup; } parameters[9].Value = ID; for (int i = 0; i < parameters.Length; i++) { cmd.Parameters.Add(parameters[i]); } MySqlDataAdapter dp = new MySqlDataAdapter(cmd); DataSet ds = new DataSet(); dp.Fill(ds); pagecout = int.Parse(ds.Tables[1].Rows[0]["p_pagecount"].ToString()); selfcounts = int.Parse(ds.Tables[1].Rows[0]["p_totals"].ToString()); dt = ds.Tables[0]; } } catch (Exception ex) { dt = new DataTable(); } return dt; } } }