Pragmatically Call the SelectedIndex Change event for Dropdownlist

[Denis Cilliers]

Hi I need to call the SelectedIndex event after loading the form.
The reason for this is that the dropdownlist determines if other controls are displayed on the form

here is a example of the idea

Partial Class Example

     Public Function LoadData() As Boolean

      

       Me.DropDownList1.DataSource = Types.ConfirmationType

 

        If Not CustomerName Is Nothing Then

 

            ' Where the DropDownlist ID is DropDownList1

            Me.DropDownList1.SelectedText = "Driver"

             

            ' Calls the method directly passing the appropriate sender

            Me.DropDownList1_SelectedIndexChanged(Me.DropDownList1, Nothing)

        End If

     End Function

 

    Protected Sub DropDownList1_SelectedIndexChanged(sender As System.Object, e As Telerik.WinControls.UI.Data.PositionChangedEventArgs) Handles DropDownList1.SelectedIndexChanged

          

        Dim options As String = Me.DropDownList1.SelectedText

 

        Select Case options

            Case "Driver"

                'Display the Driver mobile fields

                Me.lblDriverMobile.Visible = True

                Me.txtDriverMobile.Visible = True

                Me.ddlDriverMobileCode.Visible = True

                Me.pbDriverMobile.Visible = True

            Case Else

                'Hide the Driver mobile fields

                Me.lblDriverMobile.Visible = False

                Me.txtDriverMobile.Visible = False

                Me.ddlDriverMobileCode.Visible = False

                Me.pbDriverMobile.Visible = False

 

        End Select

     End Sub

End Class

The issue is that the call does not happen and the line 

Me.DropDownList1_SelectedIndexChanged(Me.DropDownList1, Nothing)

Does not seem to work ?
What I get in the options value is a empty string ?

Any ideas

[Peter]

Hello,

I am not sure that I fully understand your scenario and I would like to clarify that the SelectedText property represents the selected text in RadDropDownList's TextBox, e.g. the selected text into text editor part of RadDropDownList. You should change the selection in this way:

Me.DropDownList1.SelectedIndex = Me.DropDownList1.FindString("Driver")

Let me know if you need further assistance with this.
Greetings,
Peter
the Telerik team