Hello friends.
I am going to share with you a concept to call server side method from client side using script manager.
Step 1 : Put ScriptManager on .ASPX page.
Step 2 : Set EnablePageMethods="True" in ScriptManager.
Step 3 : Create one static method in server side that return some value.
Step 4 : Set WebMethod attribute to above the method.
Step 5 : Create one javascript function and call server side method using PageMethods object and set callback method as argument.
Step 6 : Create callback method where you will be able to retrieve return parameter from server side method.
See following example code
ScriptManager on the page.
<asp:ScriptManager ID="ScriptManager1" EnablePageMethods="true" runat="server">
</asp:ScriptManager>
My server side static method
[System.Web.Services.WebMethod]
public static int Sum(int value1, int value2)
{
return value1 + value2;
}
My javascript function to call server side method and retrieve result from server side
<script language="javascript" type="text/javascript">
pageMethodConcept={
callServerSideMethod:function(){
PageMethods.Sum(3,4,pageMethodConcept.callback);
// I am passing 3 and 4 to get sum and set callback method
},
callback:function(result){
alert(result);
}
}
window.onload=pageMethodConcept.callServerSideMethod;
</script>
Happy ending. :)
