C#.NET萬能數據庫訪問封裝類(ACCESS、SQLServer、Oracle)

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
    /// 數據訪問基礎類
    /// 用戶可以修改滿足自己項目的需要。
    /// </summary>
    public class DataBaseLayer 
    {
        //數據庫連接字符串(web.config來配置)
        //<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"] ;
            //this.connectionString = "data source=192.168.1.43;user id=sa;pwd=sa;database=temphrdb";
            //this.dbType = "SqlServer";
        }

        /**//// <summary>
        /// 數據庫類型 
        /// </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";
                }
            }      
        }



        
        轉換參數#region 轉換參數
        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
        
        創建 Connection 和 Command#region 創建 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

        執行簡單SQL語句#region  執行簡單SQL語句
        /**//// <summary>
        /// 執行SQL語句，返回影響的記錄數
        /// </summary>
        /// <param name="SQLString">SQL語句</param>
        /// <returns>影響的記錄數</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>
        /// 執行多條SQL語句，實現數據庫事務。
        /// </summary>
        /// <param name="SQLStringList">多條SQL語句</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>
        /// 執行帶一個存儲過程參數的的SQL語句。
        /// </summary>
        /// <param name="SQLString">SQL語句</param>
        /// <param name="content">參數內容,比如一個字段是格式復雜的文章，有特殊符號，可以通過這個方式添加</param>
        /// <returns>影響的記錄數</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>
        /// 向數據庫里插入圖像格式的字段(和上面情況類似的另一種實例)
        /// </summary>
        /// <param name="strSQL">SQL語句</param>
        /// <param name="fs">圖像字節,數據庫的字段類型為image的情況</param>
        /// <returns>影響的記錄數</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>
        /// 執行一條計算查詢結果語句，返回查詢結果（object）。
        /// </summary>
        /// <param name="SQLString">計算查詢結果語句</param>
        /// <returns>查詢結果（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>
        /// 執行查詢語句，返回IDataAdapter
        /// </summary>
        /// <param name="strSQL">查詢語句</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>
        /// 執行查詢語句，返回DataSet
        /// </summary>
        /// <param name="SQLString">查詢語句</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>
        /// 執行查詢語句，返回DataSet
        /// </summary>
        /// <param name="sqlString">查詢語句</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>
        /// 執行SQL語句 返回存儲過程
        /// </summary>
        /// <param name="sqlString">Sql語句</param>
        /// <param name="dataSet">要填充的DataSet</param>
        /// <param name="startIndex">開始記錄</param>
        /// <param name="pageSize">頁面記錄大小</param>
        /// <param name="tableName">表名稱</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>
        /// 執行查詢語句，向XML文件寫入數據
        /// </summary>
        /// <param name="sqlString">查詢語句</param>
        /// <param name="xmlPath">XML文件路徑</param>
        public void WriteToXml(string sqlString,string xmlPath)
        {
            Query(sqlString).WriteXml(xmlPath);
        }

        /**//// <summary>
        /// 執行查詢語句
        /// </summary>
        /// <param name="SqlString">查詢語句</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>
        /// 執行查詢語句
        /// </summary>
        /// <param name="SqlString">查詢語句</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

        執行帶參數的SQL語句#region 執行帶參數的SQL語句
        /**//// <summary>
        /// 執行SQL語句，返回影響的記錄數
        /// </summary>
        /// <param name="SQLString">SQL語句</param>
        /// <returns>影響的記錄數</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>
        /// 執行多條SQL語句，實現數據庫事務。
        /// </summary>
        /// <param name="SQLStringList">SQL語句的哈希表（key為sql語句，value是該語句的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 
                    {
                        //循環
                        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>
        /// 執行一條計算查詢結果語句，返回查詢結果（object）。
        /// </summary>
        /// <param name="SQLString">計算查詢結果語句</param>
        /// <returns>查詢結果（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>
        /// 執行查詢語句，返回IDataReader
        /// </summary>
        /// <param name="strSQL">查詢語句</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>
        /// 執行查詢語句，返回DataSet
        /// </summary>
        /// <param name="SQLString">查詢語句</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

        存儲過程操作#region 存儲過程操作

        /**//// <summary>
        /// 執行存儲過程
        /// </summary>
        /// <param name="storedProcName">存儲過程名</param>
        /// <param name="parameters">存儲過程參數</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>
        /// 執行存儲過程
        /// </summary>
        /// <param name="storedProcName">存儲過程名</param>
        /// <param name="parameters">存儲過程參數</param>
        /// <param name="tableName">DataSet結果中的表名</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>
        /// 執行存儲過程
        /// </summary>
        /// <param name="storedProcName">存儲過程名</param>
        /// <param name="parameters">存儲過程參數</param>
        /// <param name="tableName">DataSet結果中的表名</param>
        /// <param name="startIndex">開始記錄索引</param>
        /// <param name="pageSize">頁面記錄大小</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>
        /// 執行存儲過程 填充已經存在的DataSet數據集 
        /// </summary>
        /// <param name="storeProcName">存儲過程名稱</param>
        /// <param name="parameters">存儲過程參數</param>
        /// <param name="dataSet">要填充的數據集</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>
        /// 執行存儲過程並返回受影響的行數
        /// </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>
        /// 構建 SqlCommand 對象(用來返回一個結果集，而不是一個整數值)
        /// </summary>
        /// <param name="connection">數據庫連接</param>
        /// <param name="storedProcName">存儲過程名</param>
        /// <param name="parameters">存儲過程參數</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>
        /// 執行存儲過程，返回影響的行數        
        /// </summary>
        /// <param name="storedProcName">存儲過程名</param>
        /// <param name="parameters">存儲過程參數</param>
        /// <param name="rowsAffected">影響的行數</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>
        /// 創建 SqlCommand 對象實例(用來返回一個整數值)    
        /// </summary>
        /// <param name="storedProcName">存儲過程名</param>
        /// <param name="parameters">存儲過程參數</param>
        /// <returns>SqlCommand 對象實例</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    


    }
}