[Solved] Text and Value of all items empty

[Jeroen Eikmans]

Hello,

I have a Combobox where i add the items programmatically. In the OnSelectedIndexChanged event i want to save the new selected value. I tried this with the evaluation controls and this worked. Now i've bought the Q1 2009 Developer license, installed them and my code isn't working anymore.

Below is the code of a small testproject i made, reproducing the problem. On PostBack in the Init event the ComboBox.Items is first empty. In SelectedIndexChanged the Combobox.Items is filled again with the number of items i added but both Value and Item properties are empty.

Is there some property i need to set now or use some other events?

<telerik:RadScriptManager ID="RadScriptManager1" runat="server">  </telerik:RadScriptManager>
  <telerik:RadComboBox ID="RadComboBox1" Runat="server"
    oninit="RadComboBox1_Init"
    onselectedindexchanged="RadComboBox1_SelectedIndexChanged"
    AutoPostBack="True" >
  </telerik:RadComboBox>
<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>

protected void RadComboBox1_Init(object sender, EventArgs e)
{
    RadComboBox1.Enabled = true;
    if (!Page.IsPostBack)
    {
        RadComboBox1.Items.Clear();
        RadComboBox1.Items.Add(new RadComboBoxItem("Item 1", "1"));
        RadComboBox1.Items.Add(new RadComboBoxItem("Item 2", "2"));
        RadComboBox1.Items.Add(new RadComboBoxItem("Item 3", "3"));
        RadComboBox1.Items.Add(new RadComboBoxItem("Item 4", "4"));
        RadComboBox1.Items.Add(new RadComboBoxItem("Item 5", "5"));
    }
}

protected void RadComboBox1_SelectedIndexChanged(object o, RadComboBoxSelectedIndexChangedEventArgs e)
{
    Label1.Text = RadComboBox1.SelectedItem.Text + " : " + RadComboBox1.SelectedItem.Value;
}

[Shinu]

Hi Roel Martens,

Can you try adding combo items in Load event instead of Init event and see whether it is working fine?

CS:

protected void RadComboBox1_Load(object sender, EventArgs e)
{
    if (!Page.IsPostBack)
    {
        RadComboBox1.Items.Clear();
        RadComboBox1.Items.Add(new RadComboBoxItem("Item 1", "1"));
        RadComboBox1.Items.Add(new RadComboBoxItem("Item 2", "2"));
        RadComboBox1.Items.Add(new RadComboBoxItem("Item 3", "3"));
        RadComboBox1.Items.Add(new RadComboBoxItem("Item 4", "4"));
        RadComboBox1.Items.Add(new RadComboBoxItem("Item 5", "5"));
    }
}

I guess the items are not preserved because the view-state information is not used in Init event.

-Shinu.

[Jeroen Eikmans]

Hi Shinu,

Thanks for the fast reply.
It is indeed working now again when i use the Load event instead of the Init event.