title: RadWindow is closed when page is refreshed
body: <p>RadWindow is closed when the page is refreshed. I have a RadWindow that has a button in  <code>&lt;ContentTemplate&gt;</code>, and when I click on the button the RadWindow is closed. What should I do to not close the RadWindow?</p>
  
  <pre><code>&lt;telerik:RadWindowManager ID="RadWindowManager1" ShowContentDuringLoad="true" VisibleStatusbar="false"
      RegisterWithScriptManager="True" EnableShadow="True" ReloadOnShow="true" Width="760px"
      Height="350px" runat="server"&gt;
      &lt;Windows&gt;
          &lt;telerik:RadWindow ID="modalPopup" runat="server" Modal="True" OpenerElementID="btnShowWindow"&gt;
              &lt;ContentTemplate&gt;
                  &lt;asp:Button ID="Button1" runat="server" Text="AddName" OnClick="Button1_Click" /&gt;
                  &lt;asp:Label ID="lblName" runat="server" &gt;&lt;/asp:Label&gt;
              &lt;/ContentTemplate&gt;
          &lt;/telerik:RadWindow&gt;
      &lt;/Windows&gt;
  &lt;/telerik:RadWindowManager&gt;
  </code></pre>
  
  <p>In aspx.cs:</p>
  
  <pre><code>protected void Button1_Click(object sender, EventArgs e)
  {
      lblName.Text = "Hello!";
  }
  </code></pre>