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Databinding for RadComBox

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ComboBox
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Greg
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Greg asked on 20 Nov 2008, 03:23 PM
Hi,
    I have two RadComboBox controls on my page.  Here is the markup for the combo boxes:
<telerik:RadComboBox OnClientSelectedIndexChanged="LoadLevels" Skin="Vista" ID="ApplicationComboBox" runat="server"/>                    
<telerik:RadComboBox Skin="Vista" ID="LevelComboBox" runat="server"/>        

javascript:
function LoadLevels(item) {
        var levelCombo = $find("<%= LevelComboBox.ClientID %>");
        alert(item.Value);
        levelCombo.RequestItems(item.Value, false);
    }              

server code:
LevelComboBox.ItemsRequested += new RadComboBoxItemsRequestedEventHandler(LevelComboBox_ItemsRequested);

void LevelComboBox_ItemsRequested(object o, RadComboBoxItemsRequestedEventArgs e)
        {
            LoadLevels(e.Value);
        }

What is supposed to happen is once the user selects an item from the ApplicationComboBox control, the LevelComboBox gets updated/populated with corresponding data.  I think I have followed the live demo pretty well. (http://demos.telerik.com/aspnet/Combobox/Examples/Functionality/MultipleComboBoxes/DefaultCS.aspx)

I am having 2 issues:
1) Javascript throws an error saying "Object doesn't support this property or method".  This gets thrown when I call the RequestItems method in javascript.
2) The item.Value is "undefined";

I have also tried to do this by subscribing to the selectedindexchanged event on the server side to update my second combo box.  This works the first time, but if I select another value then the second combo box will not get updated.

Any help would be greatly appreciated.

Thanks,
Greg

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Atanas Korchev
Telerik team
answered on 20 Nov 2008, 06:12 PM
Hello Greg Case,

This demo is the for the older version of RadComboBox. Please check this instead.

Regards,
Albert
the Telerik team

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Greg
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Atanas Korchev
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