Items add multiple time

[Sandeep]

I have one radcombobox inside update panel.

when i changed the value of it,that value add in same dropdwon again.

Suppose i select item1 then dropdwon result is

item1

item1 

[Ivan Danchev]

Hello Sandeep,

Please post the UpdatePanel markup declaration along with its content. Also if you are binding the ComboBox in the code-behind post the respective event handlers and methods. This will allow us to reproduce the issue and find what causes the behavior you are experiencing.

Regards,
Ivan Danchev
Telerik

[Sandeep]

  <asp:UpdatePanel ID="UPan_Criteria" runat="server" UpdateMode="Conditional">
   <ContentTemplate>

<telerik:RadComboBox ID="ddteset" runat="server" RenderMode="Auto" Width="240" ToolTip="Select test"
  AutoPostBack="True" DropDownAutoWidth="Enabled" ShowMoreResultsBox="false" Skin="Default" Label="test :">
 </telerik:RadComboBox>

 </ContentTemplate>

  </asp:UpdatePanel>

 

code behind

 

Public Class test
    Inherits System.Web.UI.Page

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
    If Not IsPostBack And ViewState("PgLoadCount") = Nothing Then
ddtest.Items.Insert(0, New RadComboBoxItem("Item1"))
ddtest.Items.Insert(1, New RadComboBoxItem("Item2"))
ddtest.Items.Insert(2, New RadComboBoxItem("Item3"))
   End IF
 End Sub

Private Sub ddSystem_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles ddtest.SelectedIndexChanged
'nothing
End Sub
End Class

[Sandeep]

Can anybody suggest solution ?

[Plamen]

Hello,

Here I am attaching the page that worked correctly at my side. Hope this will help you solve the issue.

Regards,
Plamen
Telerik