Our WebNotification is interval based not event based. However, based WebFormType.aspx and WebServiceType.aspx reference sample, we could provide a workaround for your scenario.

In the sample, the notification will only be displayed if this line is executed:

collection.Notifications = new WebNotificationEvent[] { evnt };

An event object is added to the collection, in your case you will need to add a conditional block so the event will only be added if there is a difference in Grid row count.

thanks for the reply,

in the server side i can able to activate webnotification using the line of code

WebNotification1.Notify("This notification is sent from Page_Load. Check it out!",
   "", "Vista Style Notification");

but want to do this from client side using javascript. the below code not working for me

 var webnoti= ISGetObject("WebNotification1");
 webnoti.Notify("This notification is sent from button click. Check it out!","", "Vista Style Notification");

Hi Ca,

     Yes, that is not the right way in order to notify a WebNotification from client side using java script. First, we will need to create the notification object that contains required properties. If we are notifying the WebNotification from client side, the object is not available if it does not come from server side. 

     Here is the snippet on how to create a simple object and show the Notification:

   function Button1_onclick() {
     var WebNotify = ISGetObject("WebNotification1");
     var myNotification = WebNotify;
     myNotification.ContentText = "This notification is sent from button click. Check it out!";
     myNotification.CaptionText = "Vista Style Notification";
     WebNotify.Notify(myNotification);
   }

      I hope it can help. Thank you and have a nice day.

Best Regards,

Andi Santoso