//-------------------------------------------------------------------------
/* check ready for comparison */
public void Check()
{
if (Cols.Count == 0)
{
throw new Exception("No fields in pairs");
}
SrcA.Check();
SrcB.Check();
}
//-------------------------------------------------------------------------
public void Dispose()
{
if (SrcA != null)
{
SrcA.DTClear();
}
if (SrcB != null)
{
SrcB.DTClear();
}
}