I am using 2009.1 w/the latest hotfixes.

I need loop through all my rows and find cells that match a value or a color.  At first I was doing ..

foreach (UltraGridRow aRow in gridConstraints.Rows)
{
 foreach(UltraGridCell aCell in aRow.Cells)
 {
  if(aCell.Appearance.BackColor == Color.Gray)
  {
   //do stuff
  }
 }
 
}

Each call to the the if statement cuased the memory to jump like crazy, after about 100 rows I am up to 1-1.5GB of memory usage.  So I thought maybe the Color.Gray was allocating some memory everytime so I thought I would try comparing a value.  The same problem happens...so I thought I would try this with LINQ like this..

foreach (UltraGridRow aRow in gridConstraints.Rows)
{

 List<UltraGridCell> cells = (from UltraGridCell c in aRow.Cells
  where c.Value == "X"
  select c).ToList();

 foreach (UltraGridCell aCell in cells)
 {
 }
 
 cells.Clear();
    cells = null;
}

...hoping the .Clear() and setting the list to null would clear the used RAM, but it is still using the same amount.

So my questions are why does doing a compare cause the memory to increase? How can I do this w/o the memory increasing or how can I release the used memory after each compare?