I have a gridview that that show a web address text, i'm catching the value of the focus row-cell to navigate to those website, I get in error  when  the cell is null

How can I add an (if is null  into this code) so I dont get an exception dbnull error....Conversion from type 'DBNull' to type 'String' is not valid.

Private

Sub GridView1_FocusedRowChanged(ByVal sender As System.Object, ByVal e As DevExpress.XtraGrid.Views.Base.FocusedRowChangedEventArgs) Handles GridView1.FocusedRowChanged

Dim CellValue As

String

"HotelWebSite")

End

Sub

Have you tried this?:

If gridview1.GetFocusedRowCellValue("HotelWebSite") IsNot DBNull.Value then

     Dim CellValue as string = gridview1.GetFocusedRowCellValue("HotelWebSite")

     WebBrowser1.Navigate(CellValue)

End If