title: RadWindow PopUp from CodeBehind from RadGrid Dropdownlist(EditMode)
body: <p>I have a situation that I need some answers for please. I am working with the RadWindow control using the Contenttemplate. When my RadGrid is in EditMode, and user makes a selection from a contained dropdownlist, I would like to PopUp the RadWindow at that point showing user adding  options to help further filter data. When user clicks to close the Radwindow, I want to return to my EditMode RadGrid displaying the selected options in my RadGrid Textbox. </p>
  
  <p>My question is, how do I get my radwindow(content template) to display from codebehind. </p>
  
  <pre><code> &lt;telerik:RadWindow ID="UserListDialog" runat="server" Title="Editing record" Width="250"  Height="536" KeepInScreenBounds="true" Modal="true"
                              Behaviors="Minimize, Move, Resize, Maximize" Left="580" Top="-8" EnableShadow="true"&gt;
                              &lt;ContentTemplate&gt;
                                  &lt;asp:Panel ID="PnlUserRoleList"&gt;
                                      &lt;asp:CheckBoxList ID="UserRoleCheckBoxList" runat="server" Width="60%" /&gt;
                                      &lt;asp:Button ID="btnAddselected" Text="AddItems" runat="server" /&gt;
                                      &lt;asp:Button ID="btnCancel" Text="Cancel" runat="server" /&gt;
                                  &lt;/asp:Panel&gt;
                              &lt;/ContentTemplate&gt;
                          &lt;/telerik:RadWindow&gt; 
  </code></pre>