Oracle,SQL Server,Access万能数据库通用类DBHelper

using System; using System.Collections; using System.Collections.Specialized; using System.Data; using System.Data.SqlClient; using System.Data.OleDb; using System.Data.OracleClient; using System.Configuration; using System.Reflection; namespace SystemFramework.DAL { /**//// <summary> /// All rights reserved /// 数据访问基础类 /// 用户可以修改满足自己项目的需要。 /// </summary> public class DataBaseLayer { //数据库连接字符串(web.config来配置) //<add key="ConnectionString" value="server=127.0.0.1;database=DATABASE;uid=sa;pwd=" /> private string connectionString; public string ConntionString { get { return connectionString ; } set { connectionString = value; } } public DataBaseLayer(string strConnect,string dataType) { this.ConntionString = strConnect; this.DbType = dataType; } public DataBaseLayer() { this.connectionString = ConfigurationSettings.AppSettings["ConnectionString"] ; this.dbType = ConfigurationSettings.AppSettings["DataType"] ; } /**//// <summary> /// 数据库类型 /// </summary> private string dbType; public string DbType { get { if ( dbType == string.Empty || dbType == null ) { return "Access"; } else { return dbType; } } set { if ( value != string.Empty && value != null ) { dbType = value; } if (dbType ==string.Empty || dbType == null) { dbType = ConfigurationSettings.AppSettings["DataType"]; } if ( dbType == string.Empty || dbType == null ) { dbType = "Access"; } } } 转换参数#region 转换参数 private System.Data.IDbDataParameter iDbPara(string ParaName,string DataType) { switch(this.DbType) { case "SqlServer": return GetSqlPara(ParaName,DataType); case "Oracle": return GetOleDbPara(ParaName,DataType); case "Access": return GetOleDbPara(ParaName,DataType); default : return GetSqlPara(ParaName,DataType); } } private System.Data.SqlClient.SqlParameter GetSqlPara( string ParaName , string DataType) { switch(DataType) { case "Decimal": return new System.Data.SqlClient.SqlParameter ( ParaName, System.Data.SqlDbType.Decimal ); case "Varchar": return new System.Data.SqlClient.SqlParameter ( ParaName, System.Data.SqlDbType.VarChar ); case "DateTime": return new System.Data.SqlClient.SqlParameter ( ParaName, System.Data.SqlDbType.DateTime ); case "Iamge": return new System.Data.SqlClient.SqlParameter ( ParaName, System.Data.SqlDbType.Image ); case "Int": return new System.Data.SqlClient.SqlParameter ( ParaName, System.Data.SqlDbType.Int ); case "Text": return new System.Data.SqlClient.SqlParameter ( ParaName, System.Data.SqlDbType.NText ); default : return new System.Data.SqlClient.SqlParameter ( ParaName, System.Data.SqlDbType.VarChar ); } } private System.Data.OracleClient.OracleParameter GetOraclePara( string ParaName , string DataType) { switch(DataType) { case "Decimal": return new System.Data.OracleClient.OracleParameter( ParaName, System.Data.OracleClient.OracleType.Double); case "Varchar": return new System.Data.OracleClient.OracleParameter ( ParaName, System.Data.OracleClient.OracleType.VarChar ); case "DateTime": return new System.Data.OracleClient.OracleParameter ( ParaName, System.Data.OracleClient.OracleType.DateTime ); case "Iamge": return new System.Data.OracleClient.OracleParameter ( ParaName, System.Data.OracleClient.OracleType.BFile ); case "Int": return new System.Data.OracleClient.OracleParameter ( ParaName, System.Data.OracleClient.OracleType.Int32 ); case "Text": return new System.Data.OracleClient.OracleParameter ( ParaName, System.Data.OracleClient.OracleType.LongVarChar ); default: return new System.Data.OracleClient.OracleParameter ( ParaName, System.Data.OracleClient.OracleType.VarChar ); } } private System.Data.OleDb.OleDbParameter GetOleDbPara( string ParaName , string DataType) { switch(DataType) { case "Decimal": return new System.Data.OleDb.OleDbParameter( ParaName, System.Data.DbType.Decimal); case "Varchar": return new System.Data.OleDb.OleDbParameter ( ParaName, System.Data.DbType.String ); case "DateTime": return new System.Data.OleDb.OleDbParameter ( ParaName, System.Data.DbType.DateTime ); case "Iamge": return new System.Data.OleDb.OleDbParameter( ParaName, System.Data.DbType.Binary ); case "Int": return new System.Data.OleDb.OleDbParameter ( ParaName, System.Data.DbType.Int32 ); case "Text": return new System.Data.OleDb.OleDbParameter ( ParaName, System.Data.DbType.String ); default: return new System.Data.OleDb.OleDbParameter ( ParaName, System.Data.DbType.String ); } } #endregion 创建 Connection 和 Command#region 创建 Connection 和 Command private IDbConnection GetConnection() { switch(this.DbType) { case "SqlServer": return new System.Data.SqlClient.SqlConnection(this.ConntionString); case "Oracle": return new System.Data.OracleClient.OracleConnection(this.ConntionString); case "Access": return new System.Data.OleDb.OleDbConnection(this.ConntionString); default: return new System.Data.SqlClient.SqlConnection(this.ConntionString); } } private IDbCommand GetCommand(string Sql,IDbConnection iConn) { switch(this.DbType) { case "SqlServer": return new System.Data.SqlClient.SqlCommand(Sql,(SqlConnection)iConn); case "Oracle": return new System.Data.OracleClient.OracleCommand(Sql,(OracleConnection)iConn); case "Access": return new System.Data.OleDb.OleDbCommand(Sql,(OleDbConnection)iConn); default: return new System.Data.SqlClient.SqlCommand(Sql,(SqlConnection)iConn); } } private IDbCommand GetCommand() { switch(this.DbType) { case "SqlServer": return new System.Data.SqlClient.SqlCommand(); case "Oracle": return new System.Data.OracleClient.OracleCommand(); case "Access": return new System.Data.OleDb.OleDbCommand(); default: return new System.Data.SqlClient.SqlCommand(); } } private IDataAdapter GetAdapater(string Sql,IDbConnection iConn) { switch(this.DbType) { case "SqlServer": return new System.Data.SqlClient.SqlDataAdapter(Sql,(SqlConnection)iConn); case "Oracle": return new System.Data.OracleClient.OracleDataAdapter(Sql,(OracleConnection)iConn); case "Access": return new System.Data.OleDb.OleDbDataAdapter(Sql,(OleDbConnection)iConn); default: return new System.Data.SqlClient.SqlDataAdapter(Sql,(SqlConnection)iConn);; } } private IDataAdapter GetAdapater() { switch(this.DbType) { case "SqlServer": return new System.Data.SqlClient.SqlDataAdapter(); case "Oracle": return new System.Data.OracleClient.OracleDataAdapter(); case "Access": return new System.Data.OleDb.OleDbDataAdapter(); default: return new System.Data.SqlClient.SqlDataAdapter(); } } private IDataAdapter GetAdapater(IDbCommand iCmd) { switch(this.DbType) { case "SqlServer": return new System.Data.SqlClient.SqlDataAdapter((SqlCommand)iCmd); case "Oracle": return new System.Data.OracleClient.OracleDataAdapter((OracleCommand)iCmd); case "Access": return new System.Data.OleDb.OleDbDataAdapter((OleDbCommand)iCmd); default: return new System.Data.SqlClient.SqlDataAdapter((SqlCommand)iCmd); } } #endregion 执行简单SQL语句#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 int ExecuteSql(string SqlString) { using (System.Data.IDbConnection iConn = this.GetConnection()) { using (System.Data.IDbCommand iCmd = GetCommand(SqlString,iConn)) { iConn.Open(); try { int rows=iCmd.ExecuteNonQuery(); return rows; } catch(System.Exception E) { throw new Exception(E.Message); } finally { if(iConn.State != ConnectionState.Closed) { iConn.Close(); } } } } } /**//// <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 void ExecuteSqlTran(ArrayList SQLStringList) { using (System.Data.IDbConnection iConn = this.GetConnection()) { iConn.Open(); using(System.Data.IDbCommand iCmd = GetCommand()) { iCmd.Connection=iConn; using(System.Data.IDbTransaction iDbTran = iConn.BeginTransaction()) { iCmd.Transaction=iDbTran; try { for(int n=0;n<SQLStringList.Count;n++) { string strsql = SQLStringList[n].ToString(); if ( strsql.Trim().Length>1) { iCmd.CommandText = strsql; iCmd.ExecuteNonQuery(); } } iDbTran.Commit(); } catch(System.Exception E) { iDbTran.Rollback(); throw new Exception(E.Message); } finally { if(iConn.State != ConnectionState.Closed) { iConn.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 int ExecuteSql(string SqlString,string content) { using (System.Data.IDbConnection iConn = this.GetConnection()) { using(System.Data.IDbCommand iCmd = GetCommand(SqlString,iConn)) { System.Data.IDataParameter myParameter = this.iDbPara( "@content", "Text"); myParameter.Value = content ; iCmd.Parameters.Add(myParameter); iConn.Open(); try { int rows = iCmd.ExecuteNonQuery(); return rows; } catch( System.Exception e ) { throw new Exception(e.Message); } finally { if(iConn.State != ConnectionState.Closed) { iConn.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 int ExecuteSqlInsertImg(string SqlString,byte[] fs) { using (System.Data.IDbConnection iConn = this.GetConnection()) { using(System.Data.IDbCommand iCmd = GetCommand(SqlString,iConn)) { System.Data.IDataParameter myParameter = this.iDbPara( "@content", "Image"); myParameter.Value = fs ; iCmd.Parameters.Add(myParameter); iConn.Open(); try { int rows = iCmd.ExecuteNonQuery(); return rows; } catch( System.Exception e ) { throw new Exception(e.Message); } finally { if(iConn.State != ConnectionState.Closed) { iConn.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 object GetSingle(string SqlString) { using (System.Data.IDbConnection iConn = GetConnection()) { using (System.Data.IDbCommand iCmd = GetCommand(SqlString,iConn)) { iConn.Open(); try { object obj = iCmd.ExecuteScalar(); if((Object.Equals(obj,null))||(Object.Equals(obj,System.DBNull.Value))) { return null; } else { return obj; } } catch(System.Exception e) { throw new Exception(e.Message); } finally { if(iConn.State != ConnectionState.Closed) { iConn.Close(); } } } } } /**//// <summary> /// 执行查询语句，返回IDataAdapter /// </summary> /// <param name="strSQL">查询语句</param> /// <returns>IDataAdapter</returns> public IDataAdapter ExecuteReader(string strSQL) { using (System.Data.IDbConnection iConn = this.GetConnection()) { iConn.Open(); try { System.Data.IDataAdapter iAdapter = this.GetAdapater(strSQL,iConn); return iAdapter; } catch(System.Exception e) { throw new Exception(e.Message); } finally { if(iConn.State != ConnectionState.Closed) { iConn.Close(); } } } } /**//// <summary> /// 执行查询语句，返回DataSet /// </summary> /// <param name="SQLString">查询语句</param> /// <returns>DataSet</returns> public DataSet Query(string sqlString) { using (System.Data.IDbConnection iConn = this.GetConnection()) { using(System.Data.IDbCommand iCmd = GetCommand(sqlString,iConn)) { DataSet ds = new DataSet(); iConn.Open(); try { System.Data.IDataAdapter iAdapter = this.GetAdapater(sqlString,iConn); iAdapter.Fill(ds); return ds; } catch(System.Exception ex) { throw new Exception(ex.Message); } finally { if(iConn.State != ConnectionState.Closed) { iConn.Close(); } } } } } /**//// <summary> /// 执行查询语句，返回DataSet /// </summary> /// <param name="sqlString">查询语句</param> /// <param name="dataSet">要填充的DataSet</param> /// <param name="tableName">要填充的表名</param> /// <returns>DataSet</returns> public DataSet Query(string sqlString,DataSet dataSet,string tableName) { using (System.Data.IDbConnection iConn = this.GetConnection()) { using(System.Data.IDbCommand iCmd = GetCommand(sqlString,iConn)) { iConn.Open(); try { System.Data.IDataAdapter iAdapter = this.GetAdapater(sqlString,iConn); ((OleDbDataAdapter)iAdapter).Fill(dataSet,tableName); return dataSet; } catch(System.Exception ex) { throw new Exception(ex.Message); } finally { if(iConn.State != ConnectionState.Closed) { iConn.Close(); } } } } } /**//// <summary> /// 执行SQL语句 返回存储过程 /// </summary> /// <param name="sqlString">Sql语句</param> /// <param name="dataSet">要填充的DataSet</param> /// <param name="startIndex">开始记录</param> /// <param name="pageSize">页面记录大小</param> /// <param name="tableName">表名称</param> /// <returns>DataSet</returns> public DataSet Query(string sqlString , DataSet dataSet ,int startIndex ,int pageSize, string tableName ) { using (System.Data.IDbConnection iConn = this.GetConnection()) { iConn.Open(); try { System.Data.IDataAdapter iAdapter = this.GetAdapater(sqlString,iConn); ((OleDbDataAdapter)iAdapter).Fill(dataSet,startIndex,pageSize,tableName); return dataSet; } catch(Exception ex) { throw new Exception(ex.Message); } finally { if(iConn.State != ConnectionState.Closed) { iConn.Close(); } } } } /**//// <summary> /// 执行查询语句，向XML文件写入数据 /// </summary> /// <param name="sqlString">查询语句</param> /// <param name="xmlPath">XML文件路径</param> public void WriteToXml(string sqlString,string xmlPath) { Query(sqlString).WriteXml(xmlPath); } /**//// <summary> /// 执行查询语句 /// </summary> /// <param name="SqlString">查询语句</param> /// <returns>DataTable </returns> public DataTable ExecuteQuery(string sqlString) { using (System.Data.IDbConnection iConn = this.GetConnection()) { //System.Data.IDbCommand iCmd = GetCommand(sqlString,iConn); DataSet ds = new DataSet(); try { System.Data.IDataAdapter iAdapter = this.GetAdapater(sqlString,iConn); iAdapter.Fill(ds); } catch(System.Exception e) { throw new Exception(e.Message); } finally { if(iConn.State != ConnectionState.Closed) { iConn.Close(); } } return ds.Tables[0]; } } /**//// <summary> /// 执行查询语句 /// </summary> /// <param name="SqlString">查询语句</param> /// <returns>DataTable </returns> public DataTable ExecuteQuery(string SqlString,string Proc) { using (System.Data.IDbConnection iConn = this.GetConnection()) { using(System.Data.IDbCommand iCmd = GetCommand(SqlString,iConn)) { iCmd.CommandType = CommandType.StoredProcedure; DataSet ds = new DataSet(); try { System.Data.IDataAdapter iDataAdapter = this.GetAdapater(SqlString,iConn); iDataAdapter.Fill(ds); } catch(System.Exception e) { throw new Exception(e.Message); } finally { if(iConn.State != ConnectionState.Closed) { iConn.Close(); } } return ds.Tables[0]; } } } /**//// <summary> /// /// </summary> /// <param name="Sql"></param> /// <returns></returns> public DataView ExeceuteDataView(string Sql) { using (System.Data.IDbConnection iConn = this.GetConnection()) { using(System.Data.IDbCommand iCmd = GetCommand(Sql,iConn)) { DataSet ds = new DataSet(); try { System.Data.IDataAdapter iDataAdapter = this.GetAdapater(Sql,iConn); iDataAdapter.Fill(ds); return ds.Tables[0].DefaultView; } catch(System.Exception e) { throw new Exception(e.Message); } finally { if(iConn.State != ConnectionState.Closed) { iConn.Close(); } } } } } #endregion 执行带参数的SQL语句#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 int ExecuteSql(string SQLString,params IDataParameter[] iParms) { using (System.Data.IDbConnection iConn = this.GetConnection()) { System.Data.IDbCommand iCmd = GetCommand(); { try { PrepareCommand(out iCmd, iConn, null , SQLString, iParms ); int rows=iCmd.ExecuteNonQuery(); iCmd.Parameters.Clear(); return rows; } catch(System.Exception E) { throw new Exception( E.Message ); } finally { iCmd.Dispose(); if(iConn.State != ConnectionState.Closed) { iConn.Close(); } } } } } /**//// <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SqlParameter[]）</param> public void ExecuteSqlTran(Hashtable SQLStringList) { using (System.Data.IDbConnection iConn = this.GetConnection()) { iConn.Open(); using (IDbTransaction iTrans = iConn.BeginTransaction()) { System.Data.IDbCommand iCmd = GetCommand(); try { //循环 foreach ( DictionaryEntry myDE in SQLStringList) { string cmdText = myDE.Key.ToString(); IDataParameter[] iParms=( IDataParameter[] ) myDE.Value; PrepareCommand( out iCmd , iConn , iTrans , cmdText , iParms ); int val = iCmd.ExecuteNonQuery(); iCmd.Parameters.Clear(); } iTrans.Commit(); } catch { iTrans.Rollback(); throw; } finally { iCmd.Dispose(); if(iConn.State != ConnectionState.Closed) { iConn.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 object GetSingle(string SQLString,params IDataParameter[] iParms) { using (System.Data.IDbConnection iConn = this.GetConnection()) { System.Data.IDbCommand iCmd = GetCommand(); { try { PrepareCommand( out iCmd, iConn, null , SQLString, iParms ); object obj = iCmd.ExecuteScalar(); iCmd.Parameters.Clear(); if((Object.Equals(obj,null))||(Object.Equals(obj,System.DBNull.Value))) { return null; } else { return obj; } } catch(System.Exception e) { throw new Exception(e.Message); } finally { iCmd.Dispose(); if(iConn.State != ConnectionState.Closed) { iConn.Close(); } } } } } /**//// <summary> /// 执行查询语句，返回IDataReader /// </summary> /// <param name="strSQL">查询语句</param> /// <returns> IDataReader </returns> public IDataReader ExecuteReader(string SQLString,params IDataParameter[] iParms) { System.Data.IDbConnection iConn = this.GetConnection(); { System.Data.IDbCommand iCmd = GetCommand(); { try { PrepareCommand(out iCmd, iConn , null , SQLString , iParms); System.Data.IDataReader iReader = iCmd.ExecuteReader(); iCmd.Parameters.Clear(); return iReader; } catch(System.Exception e) { throw new Exception(e.Message); } finally { iCmd.Dispose(); if(iConn.State != ConnectionState.Closed) { iConn.Close(); } } } } } /**//// <summary> /// 执行查询语句，返回DataSet /// </summary> /// <param name="SQLString">查询语句</param> /// <returns>DataSet</returns> public DataSet Query(string sqlString,params IDataParameter[] iParms) { using (System.Data.IDbConnection iConn = this.GetConnection()) { IDbCommand iCmd = GetCommand(); { PrepareCommand(out iCmd , iConn , null , sqlString , iParms ); try { IDataAdapter iAdapter = this.GetAdapater(sqlString,iConn); DataSet ds = new DataSet(); iAdapter.Fill(ds); iCmd.Parameters.Clear(); return ds; } catch(System.Exception ex) { throw new Exception(ex.Message); } finally { iCmd.Dispose(); if(iConn.State != ConnectionState.Closed) { iConn.Close(); } } } } } /**//// <summary> /// 初始化Command /// </summary> /// <param name="iCmd"></param> /// <param name="iConn"></param> /// <param name="iTrans"></param> /// <param name="cmdText"></param> /// <param name="iParms"></param> private void PrepareCommand(out IDbCommand iCmd,IDbConnection iConn,System.Data.IDbTransaction iTrans, string cmdText, IDataParameter[] iParms) { if (iConn.State != ConnectionState.Open) iConn.Open(); iCmd = this.GetCommand(); iCmd.Connection = iConn; iCmd.CommandText = cmdText; if (iTrans != null) iCmd.Transaction = iTrans; iCmd.CommandType = CommandType.Text;//cmdType; if (iParms != null) { foreach (IDataParameter parm in iParms) iCmd.Parameters.Add(parm); } } #endregion 存储过程操作#region 存储过程操作 /**//// <summary> /// 执行存储过程 /// </summary> /// <param name="storedProcName">存储过程名</param> /// <param name="parameters">存储过程参数</param> /// <returns>SqlDataReader</returns> public SqlDataReader RunProcedure(string storedProcName, IDataParameter[] parameters ) { System.Data.IDbConnection iConn = this.GetConnection(); { iConn.Open(); using(SqlCommand sqlCmd = BuildQueryCommand(iConn,storedProcName, parameters)) { return sqlCmd.ExecuteReader(CommandBehavior.CloseConnection); } } } /**//// <summary> /// 执行存储过程 /// </summary> /// <param name="storedProcName">存储过程名</param> /// <param name="parameters">存储过程参数</param> /// <param name="tableName">DataSet结果中的表名</param> /// <returns>DataSet</returns> public DataSet RunProcedure(string storedProcName, IDataParameter[] parameters ,string tableName) { using (System.Data.IDbConnection iConn = this.GetConnection()) { DataSet dataSet = new DataSet(); iConn.Open(); System.Data.IDataAdapter iDA = this.GetAdapater(); iDA = this.GetAdapater( BuildQueryCommand(iConn, storedProcName, parameters ) ); ((SqlDataAdapter)iDA).Fill( dataSet,tableName); if(iConn.State != ConnectionState.Closed) { iConn.Close(); } return dataSet; } } /**//// <summary> /// 执行存储过程 /// </summary> /// <param name="storedProcName">存储过程名</param> /// <param name="parameters">存储过程参数</param> /// <param name="tableName">DataSet结果中的表名</param> /// <param name="startIndex">开始记录索引</param> /// <param name="pageSize">页面记录大小</param> /// <returns>DataSet</returns> public DataSet RunProcedure(string storedProcName, IDataParameter[] parameters ,int startIndex,int pageSize,string tableName) { using (System.Data.IDbConnection iConn = this.GetConnection()) { DataSet dataSet = new DataSet(); iConn.Open(); System.Data.IDataAdapter iDA = this.GetAdapater(); iDA = this.GetAdapater( BuildQueryCommand(iConn, storedProcName, parameters ) ); ((SqlDataAdapter)iDA).Fill( dataSet,startIndex,pageSize,tableName); if(iConn.State != ConnectionState.Closed) { iConn.Close(); } return dataSet; } } /**//// <summary> /// 执行存储过程 填充已经存在的DataSet数据集 /// </summary> /// <param name="storeProcName">存储过程名称</param> /// <param name="parameters">存储过程参数</param> /// <param name="dataSet">要填充的数据集</param> /// <param name="tablename">要填充的表名</param> /// <returns></returns> public DataSet RunProcedure(string storeProcName,IDataParameter[] parameters,DataSet dataSet,string tableName) { using (System.Data.IDbConnection iConn = this.GetConnection()) { iConn.Open(); System.Data.IDataAdapter iDA = this.GetAdapater(); iDA = this.GetAdapater(BuildQueryCommand(iConn,storeProcName,parameters)); ((SqlDataAdapter)iDA).Fill(dataSet,tableName); if(iConn.State != ConnectionState.Closed) { iConn.Close(); } return dataSet; } } /**//// <summary> /// 执行存储过程并返回受影响的行数 /// </summary> /// <param name="storedProcName"></param> /// <param name="parameters"></param> /// <returns></returns> public int RunProcedureNoQuery(string storedProcName, IDataParameter[] parameters ) { int result = 0; using (System.Data.IDbConnection iConn = this.GetConnection()) { iConn.Open(); using(SqlCommand scmd = BuildQueryCommand(iConn,storedProcName,parameters)) { result = scmd.ExecuteNonQuery(); } if(iConn.State != ConnectionState.Closed) { iConn.Close(); } } return result ; } public string RunProcedureExecuteScalar(string storeProcName,IDataParameter[] parameters) { string result = string.Empty; using (System.Data.IDbConnection iConn = this.GetConnection()) { iConn.Open(); using(SqlCommand scmd = BuildQueryCommand(iConn,storeProcName,parameters)) { object obj = scmd.ExecuteScalar(); if(obj == null) result = null; else result = obj.ToString(); } if(iConn.State != ConnectionState.Closed) { iConn.Close(); } } return result; } /**//// <summary> /// 构建 SqlCommand 对象(用来返回一个结果集，而不是一个整数值) /// </summary> /// <param name="connection">数据库连接</param> /// <param name="storedProcName">存储过程名</param> /// <param name="parameters">存储过程参数</param> /// <returns>SqlCommand</returns> private SqlCommand BuildQueryCommand(IDbConnection iConn,string storedProcName, IDataParameter[] parameters) { IDbCommand iCmd = GetCommand(storedProcName,iConn); iCmd.CommandType = CommandType.StoredProcedure; if (parameters == null) { return (SqlCommand)iCmd; } foreach (IDataParameter parameter in parameters) { iCmd.Parameters.Add( parameter ); } return (SqlCommand)iCmd; } /**//// <summary> /// 执行存储过程，返回影响的行数 /// </summary> /// <param name="storedProcName">存储过程名</param> /// <param name="parameters">存储过程参数</param> /// <param name="rowsAffected">影响的行数</param> /// <returns></returns> public int RunProcedure(string storedProcName, IDataParameter[] parameters, out int rowsAffected ) { using (System.Data.IDbConnection iConn = this.GetConnection()) { int result; iConn.Open(); using(SqlCommand sqlCmd = BuildIntCommand(iConn,storedProcName, parameters )) { rowsAffected = sqlCmd.ExecuteNonQuery(); result = (int)sqlCmd.Parameters["ReturnValue"].Value; if(iConn.State != ConnectionState.Closed) { iConn.Close(); } return result; } } } /**//// <summary> /// 创建 SqlCommand 对象实例(用来返回一个整数值) /// </summary> /// <param name="storedProcName">存储过程名</param> /// <param name="parameters">存储过程参数</param> /// <returns>SqlCommand 对象实例</returns> private SqlCommand BuildIntCommand(IDbConnection iConn,string storedProcName, IDataParameter[] parameters) { SqlCommand sqlCmd = BuildQueryCommand(iConn,storedProcName, parameters ); sqlCmd.Parameters.Add( new SqlParameter ( "ReturnValue", SqlDbType.Int,4,ParameterDirection.ReturnValue, false,0,0,string.Empty,DataRowVersion.Default,null )); return sqlCmd; } #endregion } }