void __fastcall TForm1::SwapLVItems(int a, int b)  
{  
   int New;  
   ListView1->Items->BeginUpdate();  
   { 
      ListView1->Items->Add();  
      New = ListView1->Items->Count - 1;  
      ListView1->Items->Item[New] = ListView1->Items->Item[a];  
      ListView1->Items->Item[a] =  ListView1->Items->Item[b];  
      ListView1->Items->Item[b] = ListView1->Items->Item[New];  
      ListView1->Items->Delete(New);  
   } 
   ListView1->Items->EndUpdate();  
}