CYQ.Data 轻量数据访问层（九） 自定义数据表实现绑定常用的数据控件(下）

  #region  IDataReader 成员

         public   void  Close()
        {
            _Mdr.Clear();
        }

         public   int  Depth
        {
             get
            {
                 if  (_Mdr  !=   null )
                {
                     return  _Mdr.Count;
                }
                 return   0 ;
            }
        }

         public  DataTable GetSchemaTable()
        {
             return   null ;
        }

         public   bool  IsClosed
        {
             get
            {
                 return   true ;
            }
        }

         public   bool  NextResult()
        {
             if  (_Ptr  <  _Mdr.Count  -   1 )
            {
                 return   true ;
            }
             else
            {
                 return   false ;
            }
        }

         public   bool  Read()
        {
             if  (_Ptr  <  _Mdr.Count)
            {
                _Ptr ++ ;
                 return   true ;
            }
             else
            {
                 return   false ;
            }
        }

         public   int  RecordsAffected
        {
             get
            {
                 return   - 1 ;
            }
        }

         #endregion

       

         #region  IDataRecord 成员
         private   int  _Ptr  =   0 ;
         public   int  FieldCount
        {
             get
            {
                 if  ( this .Columns  !=   null )
                {
                     return   this .Columns.Count;
                }
                 return   0 ;
            }
        }

         public   bool  GetBoolean( int  i)
        {
             return  ( bool )_Mdr[_Ptr][i].Value;
        }

         public   byte  GetByte( int  i)
        {
             return  ( byte )_Mdr[_Ptr][i].Value;
        }

         public   long  GetBytes( int  i,  long  fieldOffset,  byte [] buffer,  int  bufferoffset,  int  length)
        {
             throw   new  Exception( " The method or operation is not implemented. " );
        }

         public   char  GetChar( int  i)
        {
             return  ( char )_Mdr[_Ptr][i].Value;
        }

         public   long  GetChars( int  i,  long  fieldoffset,  char [] buffer,  int  bufferoffset,  int  length)
        {
             throw   new  Exception( " The method or operation is not implemented. " );
        }

         public  IDataReader GetData( int  i)
        {
             return   this ;
        }

         public   string  GetDataTypeName( int  i)
        {
             return  DataType.GetDbTypeFromSqlDbType(_Mdr[_Ptr].Columns[i].SqlType.ToString()).ToString();
        }

         public  DateTime GetDateTime( int  i)
        {
             return  (DateTime)_Mdr[_Ptr][i].Value;
        }

         public   decimal  GetDecimal( int  i)
        {
             return  ( decimal )_Mdr[_Ptr][i].Value;
        }

         public   double  GetDouble( int  i)
        {
             return  ( double )_Mdr[_Ptr][i].Value;
        }

         public  Type GetFieldType( int  i)
        {
             return  Type.GetType( " System. "   +  GetDataTypeName(i));
        }

         public   float  GetFloat( int  i)
        {
             return  ( float )_Mdr[_Ptr][i].Value;
        }

         public  Guid GetGuid( int  i)
        {
             return  (Guid)_Mdr[_Ptr][i].Value;
        }

         public   short  GetInt16( int  i)
        {
             return  ( short )_Mdr[_Ptr][i].Value;
        }

         public   int  GetInt32( int  i)
        {
             return  ( int )_Mdr[_Ptr][i].Value;
        }

         public   long  GetInt64( int  i)
        {
             return  ( long )_Mdr[_Ptr][i].Value;
        }

         public   string  GetName( int  i)
        {
             return  _Mdr[_Ptr][i].ColumnName;
        }

         public   int  GetOrdinal( string  name)
        {
             throw   new  Exception( " The method or operation is not implemented. " );
        }

         public   string  GetString( int  i)
        {
             return  _Mdr[_Ptr][i].ColumnName.ToString();
        }

         public   object  GetValue( int  i)
        {
             return   null ;
             // return _Mdr[_Ptr][i-1].Value;
        }

         public   int  GetValues( object [] values)
        {
             for  ( int  i  =   0 ; i  <  values.Length; i ++ )
            {
               values[i]  =  _Mdr[_Ptr  -   1 ][i].Value;
            }
             return  values.Length;
        }

         public   bool  IsDBNull( int  i)
        {
             return  _Mdr[_Ptr][i].IsNull;
        }

         public   object   this [ string  name]
        {
             get
            {
                 return   null ;
            }
        }

         public   object   this [ int  i]
        {
             get
            {
                 return  _Mdr[i];
            }
        }

         #endregion

         #region  IEnumerable 成员

         public  IEnumerator GetEnumerator()
        {
             return   new  System.Data.Common.DbEnumerator( this );
        }

         #endregion