you can do this in rowdatabound event. get the row and find the cell you want then replace the cell text with * or caret as you wish
the following code i have take from one of my .
vb file. it is for understanding purpose only do your changes wherever required
Protected Sub grvSearch_RowDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles grvSearch.RowDataBound
Dim lblEvent As Label
If (e.Row.RowType = DataControlRowType.DataRow) Then
lblEvent = DirectCast(e.Row.Cells(0).Controls(1), Label)
lblEvent.Text = "*"
End If
End Sub
Pon Saravanan
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