asp.net - Close telerik radwindow from server side in C#? -

i created loading window telerik radwindow not able close server side in c#.

could me?

protected void bt_next_click(object sender, eventargs e) {     string script = "function f(){ window.radopen(\"\", \"windows_loading\");sys.application.remove_load(f); }sys.application.add_load(f);";     scriptmanager.registerstartupscript(page, page.gettype(), "key", script, true);      //here connect database , insert info database , want close radwindow.  } 

you can achieve desired functionality this, server side (i.e button click etc):

system.web.ui.scriptmanager.registerstartupscript(page, page.gettype(), guid.newguid().tostring(), "closeradwindow();", true); 

then on client side use these jquery methods:

function closeradwindow() {     //get reference current radwindow     var wndow = getradwindow();     wndow .close(); }  function getradwindow() {     var owindow = null;     if (window.radwindow) owindow = window.radwindow;     else if (window.frameelement.radwindow) owindow = window.frameelement.radwindow;     return owindow; }