show loading panel from javascript after radwindow is closed

[Dev-OBA]

Hi

I have a Page A where on button click, I display another page B using radwindow dialog. When button OK is clicked on page B, some data processing is done, dialog is closed and then page is redirected to Page C.
In this scenario, sometimes it takes considerable amount of time when the dialog is closed and page C is loaded. During this time, page A is still available (after the dialog is closed) and user may not know if the processing is going on.

Hence I thought to display a loading panel on Page A once the Dialog of page B is closed. Then this loading panel should stay on the page A until it is redirected to Page C. I do not want to refresh Page A once the dialog page B is closed. 

I tried loadingpanel.show() in the javascript of radwindow eventhandler "OnclientClose". this didnt work. How can I display loaing panel from javascript until page is redirected to page C.  

[Genti]

Hi Manisha,

In such case you can utilize some Javascript to inject a node with a loading image in the DOM.

Say, you wrapped the entire contents of your page in div container with id set to "content".
Then you get that object and alter the HTML to add the loading image:
i.e

var content = document.getElementById("content");
var img = document.createElement('img');
img.src="some source path";
content.innerHTML="";//empty all page text
content.appendChild(img);

This solution is really simple but gives the idea how you can create such functionality.

Kind regards,
Genti
the Telerik team