[Solved] Validation RadGrid Template Fields

[SA water]

Hello,
I have a number of template fields in a RadGrid which I wish to validate.
I've managed most validation using the Client side "RequiredFieldValidator" and server side validation using the CustomValidator.
I now want to validate one control based on the value of another control in the template.

eg
In the template field I have a Radiobuttonlist with 3 options (ie "Yes", "No", "NA"). If the user selects "No" then they have to enter text in a Textbox or the update should not proceed. If the answer is Yes they dont need to complete the Textbox.

Previously I achieved this in Gridview through something like the following. Its clunky but it works. It checks the Update data when the user tries to update. If it fails the validation they get a message and the update is cancelled.

    Private Sub GridView2_RowUpdating(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewUpdateEventArgs) Handles GridView2.RowUpdating
        Dim InCompliance As String = e.NewValues("Incompliance")  ' this is the value of the selected Radiobutton item
       ' test if there are any comments
        If e.NewValues("Comments") Is System.DBNull.Value Or e.NewValues("Comments") = "" Then 'no comments in textbox
            If ((Trim(InCompliance) <> "Yes")) Then ' User has selected No or NA from Radiobuttonlist
                MessageBox("You must enter a comment if you have entered a No or N/A answer")
                e.Cancel = True 'Cancel update
            End If
        End If

    End Sub

How do I achieve the same in the Radgrid?

Cheers
Robert

[Princy]

Hello Robert,

You can try out the following code using RadGrid in its UpdateCommand event to achieve the same scenario:
VB:

Protected Sub RadGrid1_UpdateCommand(ByVal source As Object, ByVal e As GridCommandEventArgs)
    Dim editItem As GridEditableItem = DirectCast(e.Item, GridEditableItem)
    Dim strtxt As String = DirectCast(editItem.FindControl("RadioButtonList1"), RadioButtonList).SelectedItem.Text 'the value of the selected Radiobutton item

    If DirectCast(editItem.FindControl("TextBox1"), System.Web.UI.WebControls.TextBox).Text = "" Then ' to check if no comments in textbox

        If strtxt <> "YES" Then ' User has selected No or NA from Radiobuttonlist

          MessageBox.Show("You must enter a comment if you have entered a No or N/A answer")
          e.Canceled = True
        End If
    End If
End Sub

Thanks
Princy.

[SA water]

Thanks a lot Princy.
With a few minor changes it  worked perfectly.
The GrideditableItem object was the bit in the logic that I was missing.

    Protected Sub RadGrid1_UpdateCommand(ByVal source As Object, ByVal e As Telerik.Web.UI.GridCommandEventArgs) Handles RadGrid1.UpdateCommand
        Dim editItem As GridEditableItem = DirectCast(e.Item, GridEditableItem)
        Dim strtxt As String = DirectCast(editItem.FindControl("RadioButtonList1"), RadioButtonList).SelectedItem.Text 'the value of the selected Radiobutton item
        If DirectCast(editItem.FindControl("TextBox1"), System.Web.UI.WebControls.TextBox).Text = "" Then ' to check if no comments in textbox
            If strtxt <> "YES" Then ' User has selected No or NA from Radiobuttonlist
                'MessageBox("You must enter a comment if you have entered a No or N/A answer")
                RadAjaxManager1.Alert("You must enter a comment if you have entered a No or N/A answer")
                e.Canceled = True
            End If
        End If
    End Sub

This forum and the people in it, such as yourself, are excellent value.
Once I build up my technical skills, which are only a few weeks old at the moment, I hope I can contribute as well.

Cheers
Robert