Call server function without post back using ICallbackEventHandler

Steps

1. Implements the ICallbackEventHandler in the partial class of the code behind file.


2. Create a client script in the aspx page to be called from server so result can be returned


3. Use the ClientScriptmanager to get a reference to the client script you created


4. ClientScriptmanager. RegisterClientScriptBlock fucntion
   • a. to register the callback script that is used by the client elements to call the server
   
   
   • b. to register the script reference we got for step3
5. Create the RaiseCallbackEvent sub that is used to retrive client arguemnts