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Combobox dropdown display

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ComboBox
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Raymond
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Raymond asked on 21 Apr 2008, 09:42 PM
I have a aspx which contains a popu as follows

<asp:LinkButton ID="lbPopup" runat="server" Text="popup" OnClientClick="return showradwindow1();" />
 <telerik:RadWindowManager id="rwmIncome" Skin="Outlook" runat="server">
        <windows>
         <telerik:RadWindow id="rwIncome"
                Left="100px" Modal="true" Runat="server" ReloadOnShow="true"
                Width="1100px" Height="780px" Title="Income Dialog">
            </telerik:RadWindow>
        </windows>
    </telerik:RadWindowManager>
    <script  type="text/javascript">
            function showradwindow1()
            {
                window.radopen("radwindow11.aspx", "rwIncome");
                return false;
            }

        </script>

After clicking the linkbutton, the combodropdown is shown correctly. the coding of this page is
 <asp:LinkButton ID="lbPopup" runat="server" Text="popup" OnClientClick="return showradwindow2();" />
   <telerik:RadComboBox id="rcbType" runat="server" Skin="Vista">
        <Items>
            <telerik:RadComboBoxItem Text="1" />
            <telerik:RadComboBoxItem Text="2" />
            <telerik:RadComboBoxItem Text="3" />
            <telerik:RadComboBoxItem Text="4" />
            <telerik:RadComboBoxItem Text="5" />
            <telerik:RadComboBoxItem Text="6" />
        </Items>
    </telerik:RadComboBox>
    <telerik:RadWindowManager id="rwmIncome" Skin="Outlook" runat="server">
        <windows>
         <telerik:RadWindow id="rwIncome"
                Left="100px" Modal="true" Runat="server" ReloadOnShow="true"
                Width="180px" Height="780px" Title="Income Dialog">
            </telerik:RadWindow>
        </windows>
    </telerik:RadWindowManager>
        <script  type="text/javascript">
            function showradwindow2()
            {
                window.radopen("radwindow111.aspx", "rwIncome");
                return false;
            }

        </script>

When clicking popup in this page, the combodropdown cannot be seen
    <telerik:RadComboBox id="rcbType" runat="server" Skin="Vista">
        <Items>
            <telerik:RadComboBoxItem Text="1" />
            <telerik:RadComboBoxItem Text="2" />
            <telerik:RadComboBoxItem Text="3" />
            <telerik:RadComboBoxItem Text="4" />
            <telerik:RadComboBoxItem Text="5" />
            <telerik:RadComboBoxItem Text="6" />
        </Items>
    </telerik:RadComboBox>

Please advice how to resolve this

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Simon
Telerik team
answered on 25 Apr 2008, 03:03 PM
Hello Raymond,

We are aware of this problem and we are working on it.

When we fix it we will let you know.

Please accept our apologies for the caused inconvenience.

Regards,
Simon
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Simon
Telerik team
answered on 23 May 2008, 09:53 AM
Hello Raymond,

The problem has been successfully resolved in the latest version of our RadControls for ASP.NET AJAX suite - v2008.1.515. Please upgrade.

Greetings,
Simon
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Ivan Manov
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answered on 25 May 2008, 10:15 PM
Hi,
 I have this issue with RadComboBox  too. I have a RadGrid and a search panel which has several RadComboBox-es. When I export the grid to CSV , all ComboBoxes stop showing dropdowns until I reload the grid ( or simply rebind it by moving to next page). There is a solution here which is for ToolBar but works for me too. Is there another way of  doing  this or I must make a wrapper class that inherit RadComboBox and override onPreRender like in the example for RadToolBar.
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Simon
Telerik team
answered on 28 May 2008, 03:52 PM
Hi Ivan Manov,

Emitting a file on the same page where a RadComboBox or a RadContextMenu are located is a well-known problem to us and, currently, we are working on it.

In the meantime, I suggest you use the following workaround: put the 'file emitting' code and only it in the Page_Load method of a new page; whenever you would like to emit the file to the user you should redirect to this new page on the client.

I have attached a sample project to illustrate the approach.


Kind regards,
Simon
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Tricia
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answered on 30 May 2008, 03:12 PM
Has this issue been fixed in version 2008.1.515 ?  I notced the release notes for the RadComboBox  #4 indicates "New method - setIsPostBack - public method to help avoid the problem with dropdowns not shown after direct file output."  I can't seem to find that method, and I'm not sure what I'd do with it to solve the problem.

I have several comboboxes on a page that I use to filter the contents of a radgrid.  I also have a link to export the contents of the grid.  Once I use the export to excel option the comboboxes do not show the dropdown until I expand one of the grid items.

Thanks for your help.
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Simon
Telerik team
answered on 02 Jun 2008, 02:58 PM
Hi Tricia,

The problem with the file download is resolved in the latest hotfix of the Web.UI.

Please find it attached to this post.

Best wishes,
Simon
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