dxMemData用起来不错,可惜起过滤功能不太好用,从网上找到这篇,试过发现不错.原文地址:

http://tingmusic.spaces.live.com/Blog/cns!61A38A6C1E849E87!678.entry

2007/5/30
How to filter the ExdivssMemData
Description

I tried setting the dxMemData.Filter property to a value and the dxMemData.Filtered property to True. But this has no effect. How can I filter MemData?

Solution

Please note that the ExdivssMemData does not recognize the Filter property. This is the designed behavior. You can use only the OnFilterRecord event handler and filter records with the help of its Accept parameter or form the FilterList manually to filter the ExdivssMemData. And of course you should set the MemData's Filtered property to True. Here is some sample code illustrating the second approach:

[Delphi]

  with dxMemData do
  begin   

DisableControls;   

 try     

 //Clear Filter     

ProgrammedFilter := False;     

Filtered := False;           

 //Create Filter     

ProgrammedFilter := True;
      First;
      while not Eof do
      begin
        if <your condition to a field value> then
          FilterList.Add(Pointer(dxMemData.CurRec + 1));
        Next;
      end;
      Filtered := True;   

finally     

EnableControls;   

end;
  end;
 

本文来源：http://blog.csdn.net/mastersky/archive/2007/07/05/1679953.aspx