Javascript call Asp.net post code method

Aspx:

 <% @ Page Language = "C #" autoeventwireup = "true" codefile = "default. aspx. cs" inherits = "pricesystem_temp_default" %> 

 <!  Doctype   Html   Public   "-// W3C // dtd xhtml 1.0 transitional // en"   Http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"  > 

 <  Html   Xmlns  = "Http://www.w3.org/1999/xhtml" > 
 <  Head   Runat  = "Server"  > 
 <  Title  > </  Title  > 
 </  Head  > 

 <  Script  SRC  = "../JS/jquery-1.5.1.min.js"   Type  = "Text/JavaScript"  > </  Script  > 
 
1:
 
 


   
 
2:
 
 


   
 
 
3:<SCRIPT>
 


   
 
 
4:$ (Function(){
 
 


   
 
5:Pagemethods. Hello ("James",Function(E ){
 
 


   
 
6:Alert (E );
 
 


   
 
 
7:});
 


   
 
 
8:})
 
 


   </Script>
 
 <  Body  > 
 <  Form   ID = "Form1"   Runat  = "Server"  > 
 <  ASP: scriptmanager   ID  = "Scriptmanager1"   Enablepagemethods  = "True"   Runat  = "Server"  > </  ASP: scriptmanager  > 
 < Div  > 
 
</Div>
</Form>
</Body>
</Html>
 
 
 
 
 
CS
 
 Using System;
 Using System. Collections. Generic;
 Using System. LINQ;
Using System. Web;
 Using System. Web. UI;
 Using System. Web. UI. webcontrols;

 Using System. xml;
 Using System. xml. XPath;
 Using System. xml. LINQ;
 Using System. Data;
 Using System. Web. Services;

 Public   Partial  Class Pricesystem_temp_default: pagebase
{
 Protected   Void Page_load ( Object Sender, eventargs E)
{

}

[Webmethod (enablesession = True )]
 Public   Static   String Hello ( String Name)
{
Return   "Hello ," + Name;
}
}
 
 
 
 
 
 
Summary ASP. net Ajax asynchronously calls the Web service on the server in the client JavaScript. We need to: 1 to add the [scriptservice] attribute for the Web service class or the web service method to be exposed to the client; 2. Add the [webmethod] attribute to the method exposed to the client in the Web service; 3. Add a reference to the Web service in the scriptmanager control on the page; 4. Use the following JavaScript syntax on the client to call the Web Service: [namespace]. [classname]. [methodname] (param1, param2 ,..., callbackfunction) 5. Specify a callback function for the client to call asynchronously, and receive and process the returned value in the callback function. Use ASP. net Ajax asynchronous calls in client JavaScript are defined in ASP. NET page, we need to: 1 declare this method as public; 2 declare this method as class method (static, VB in C.. 3. Add the [webmethod] attribute to the method. 4. Set the enablepagemethods attribute of the scriptmanager control on the page to true; 5. Use the following JavaScript syntax on the client to call the PAGE method: pagemethods. [methodname] (param1, param2 ,..., callbackfunction); 6. Specify the callback function for the client asynchronous call, and receive and process the return value in the callback function.