thousand seperator

I have datatable that I am using to populate a databound grid. I need to set a thousand seperator on one column and limit the number digits after the decimal in three other columns. How can I do this?

For the GridBoundColumn, you can set the style.CellValueType and style.Format to control the display of numbers. GridStyleInfo style = grid.Binder.InternalColumns["SomeCol"].StyleInfo; style.CellValueType = typeof(double); style.Format = "#,###.###"; //comma plus 3 dec places If you have explicitly added GridBoundColumns, then you get the column from teh grid.GridBoundColumns collection instead of the binder.InternalColumns. To not see a comma, and have 3 optional decimal places, try "#.###". Or to have 3 required places, try "#.000"