[DevExpress Support Team: CLONED FROM T830853: Is there any devexpress control or event that fires after page_load event]
Sorry for the late replay. It works properly for me. Thank you so much Oleg.
But having one issue that if I want to redirect to some other page while dashboard graphs are loading in callback then it does not redirect us to the next page till all graphs are load .
And if on dropdown selected index changed event it not properly if I have set auto postback property of dropdown to true to load different number of count of graphs on same sample project.
In the sample project I posted in your previous ticket, I demonstrated how to perform several callbacks to several controls one by one.
You can break this callbacks chain at any moment (before executing the next callback) by clearing the chartPanels array.
I.e., if you need to redirect to another page by clicking some UI element (button, hyperlink), you need to clear the mentioned array and change the window.location attribute.
Regarding a postback mode for your combobox editor. It is incorrect to mix "callback" and "postback" approaches to load controls.
If I correctly understand, you just need to save a value selected in your combobox on the server.
If so, then you can pass the combobox value as a callback parameter to your callback panel:
After that, you can get this value in the server-side Callback event handler (pnlCallBack_Callback) using the e.Parameter attribute.
I hope you will find this information helpful.