FilterRow functionality in the UltraWebGrid when handling its server-side Click event

When trying to use the UltraWebGrid’s FilterRow functionality, if you are handling its server-side Click event, you will not get the functionality you expect. When a cell in the FilterRow is clicked, the grid posts back, the cell loses focus, and the FilterRow drop down never appears. The way around this is to handle the client-side click event for the grid and cancel the postback if a cell in the filter row is clicked.

First set the UltraWebGrid’s AllowRowFiltering property to OnClient and its FilterUIType property to FilterRow.

UltraWebGrid1.DisplayLayout.Bands[0].FilterOptions.AllowRowFiltering = Infragistics.WebUI.UltraWebGrid.RowFiltering.OnClient;
UltraWebGrid1.DisplayLayout.Bands[0].FilterOptions.FilterUIType = Infragistics.WebUI.UltraWebGrid.FilterUIType.FilterRow;

UltraWebGrid1.DataKeyField = "CustomerID";