Hi,

You can do with using the Format property on the column. Assuming that the DataType of the column is a numeric type, like decimal / currency, you could do something as simple as this:

        private void ultraGrid1_InitializeLayout(object sender, Infragistics.Win.UltraWinGrid.InitializeLayoutEventArgs e)
        {
            UltraGridLayout layout = e.Layout;
            UltraGridBand band = layout.Bands[0];

            band.Columns["Decimal 1"].Format = "c";            
        } 

The "c" format will format the value as currency using the current system settings. For other number format options, check out Microsoft's documentation:

Standard Numeric Format Strings

Custom Numeric Format Strings