Because I don't know how many columns will be needed at design time, I've delved into programatically creating grid columns and adding them to the grid. However, I cannot seem to affect the width of the column. Could someone please help me understand how to set the width of the column? If I were doing this in the markup I'd set the HeaderStyle and/or ItemStyle but those appear to be readonly properties when I view them in the codebehind. Help?