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Stopping the Combo Box from auto opening

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ComboBox

This is a migrated thread and some comments may be shown as answers.

David OBrien asked on 25 Mar 2010, 07:46 PM

I have four combo boxes tied together

    
                <div style="width:985px; padding:10px;"> 
        
                    <telerik:RadComboBox EnableVirtualScrolling="false" OpenDropDownOnLoad="false" Width="250px" Label="Report Options" ID="RadComboBox1" runat="server" OnClientSelectedIndexChanging="LoadLanCodes" OnClientDropDownOpening="ClearBoxes"> 
        
                        <Items> 
        
                            <telerik:RadComboBoxItem runat="server" Selected="True" value="" Text="Any" /> 
        
                            <telerik:RadComboBoxItem runat="server" Text="Lan Code" Value="lancode" /> 
        
                            <telerik:RadComboBoxItem runat="server" Text="Support Team" Value="supportteam" /> 
        
                        </Items> 
        
                    </telerik:RadComboBox> 
        
                    <telerik:RadComboBox Width="250px"  EnableVirtualScrolling="false" OpenDropDownOnLoad="false" OnClientItemsRequested="ItemsLoaded" ID="RadComboBox2" runat="server" OnClientSelectedIndexChanging="LoadStates"> 
        
                    </telerik:RadComboBox> 
        
                    <p> 
        
                    </p> 
        
                    <telerik:RadComboBox Label="State" OpenDropDownOnLoad="false"  EnableVirtualScrolling="false" Width="250px" OnClientItemsRequested="ItemsLoaded" ID="RadComboBox3" runat="server" OnClientSelectedIndexChanging="LoadCities"> 
        
                    </telerik:RadComboBox> 
        
                    <telerik:RadComboBox Label="City" OpenDropDownOnLoad="false" Width="250px"  EnableVirtualScrolling="false" OnClientItemsRequested="ItemsLoaded" ID="RadComboBox4" runat="server"> 
        
                    </telerik:RadComboBox> 
        
                </div>

When I select a value in the first one once the data loads the drop down expand automatically
When i choose a value for the second combo box the third open on load

I was hoping that OpenDropDownOnLoad="false" would stop this behavior but it doesn't...

How do I stop it?

1 Answer, 1 is accepted

answered on 26 Mar 2010, 10:48 AM

Hi David OBrien,

As looking at your code I guess you are using this demo.

In the ItemsLoaded event handler is used showdropdown function which opens the drop-down list.

If you remove it the RadComboBoxes will not be opened automatically and there is no need of using OpenDropDownOnLoad="false" property.

function ItemsLoaded(combo, eventArqs)

{

if (combo.get_items().get_count() > 0)

{

// pre-select the first item

combo.set_text(combo.get_items().getItem(0).get_text());

combo.get_items().getItem(0).highlight();

}

//combo.showDropDown();

}

Hope this helps.

All the best,
Veronica Milcheva
the Telerik team

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