Wednesday, January 2, 2008

Used HttpContext.Items for deleting gridview row and String.TrimEnd()

There’s probably a better way, but I’m short on time so I ended up using a templated column to fire a command event that sets the argument based on the key field.  I have a feeling this is done automatically if you use a “delete button” but I wasn’t sure about the confirm prompt and I just needed this done, so I used the context to pass the value from the GridView_RowDeleting event to the ObjectDataSource.Deleting event where it is trivial to set the input parameters…


        Dim compId As Object = gvwComponents.DataKeys.Item(e.RowIndex).Values.Item(0)

        Context.Items.Add("CompId", compId)


    Protected Sub odsComponentList_Deleting(ByVal sender As Object, ByVal e As ObjectDataSourceMethodEventArgs) Handles odsComponentList.Deleting


        Dim compId As Object = Context.Items.Item("CompId")


        If CanDeleteComponent(compId) Then

            e.InputParameters.Item("componentId") = compId


            e.Cancel = True

        End If

    End Sub

Note, I discovered a cool new string function called TrimEnd():


            For Each row As DataRow In relatedComps.Rows

                compList += " " & row("Name") & ","


            compList = compList.TrimEnd(",")


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