SelectedIndexChanged

[JustinWong]

Hi:

I have a GridView with 2 columns (uniquenames = col1 and col2)
col1 is a ComboBoxColumn with 2 dropdown items.
col2 is a textboxColumn.

What I want to accomplish is this:
Whenever a user selects the first item from the combobox (col1), I want one set of text (e.g.: "You have selected the first item for row n") to show up on col2 for that row.  Similarly, when user selects the second item from the combobox, I want another set of text to show up in col2 (e.g.: "You have slsected the second item for row n").

How to accomplish this? I have not a clue. Have searched the site for 2 hours. Saw a couple of threads that are somewhat close to what I want, but couldn't modify the codes presented on those threads to do what I want. 

Your help is really appreciated. Thanks so much!

Justin

[Svett]

Hello JustinWong,

You can achieve this behavior by subscribing to the ValueChanged event handler. You can use the following code snippet:
 

Private isUpdateing As Boolean = False

Private Sub radGridView_ValueChanged(ByVal sender As Object, ByVal e As EventArgs)
    Dim dataRow As GridViewDataRowInfo = TryCast(Me.radGridView.CurrentRow, GridViewDataRowInfo)

    If isUpdateing OrElse dataRow Is Nothing Then
        Return
    End If

    Dim cbEditor As RadComboBoxEditor = TryCast(Me.radGridView.ActiveEditor, RadComboBoxEditor)

    If cbEditor IsNot Nothing Then
        Dim editorElement As RadComboBoxEditorElement = TryCast(cbEditor.EditorElement, RadComboBoxEditorElement)

        Dim rowIndex As Integer = Me.radGridView.MasterGridViewTemplate.Rows.IndexOf(dataRow)

        Dim message As String = String.Format("You have slsected {0} item for row {1}", editorElement.SelectedIndex, rowIndex)

        isUpdateing = True
        dataRow.Cells("TextColumn").Value = message
        isUpdateing = False

        Me.radGridView.MasterGridViewTemplate.Update(GridUINotifyAction.StateChanged)
    End If
End Sub

Note that the new row does not exist in the rows collection of the grid because it contains only data rows. The sample code above works for data rows only.

If you need further assistance do not hesitate to write us back.
 

Kind regards,
Svett
the Telerik team

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