First, you must reference a class library ajaxpro2.dll,
Register Ajax in the background code on the page, create a serverservice class, and add the [ajaxmethod] label to the class method.
Ajaxpro. Utility. registertypeforajax (typeof (serverservice); // register
Serverservice class:
Using system;
Using system. Data;
Using system. configuration;
Using system. Web;
Using system. Web. Security;
Using system. Web. UI;
Using system. Web. UI. webcontrols;
Using system. Web. UI. webcontrols. webparts;
Using system. Web. UI. htmlcontrols;
/// <Summary>
/// Summary of serverservice
/// </Summary>
[System. serializable]
Public class selectitem
{
Private string value;
Private string text;
Public String text
{
Get {return text ;}
Set {text = value ;}
}
Public String Value
{
Get {return value ;}
Set {value = value ;}
}
}
Public class serverservice
{
Public serverservice ()
{
//
// Todo: add the constructor logic here
//
}
// Return the time on the server
[Ajaxpro. ajaxmethod]
Public String getservertime ()
{
System. Threading. thread. Sleep (6000 );
Return datetime. Now. tolongtimestring ();
}
[Ajaxpro. ajaxmethod]
Public void receive (string message)
{
System. Collections. Generic. List <string> List
= Httpcontext. Current. application ["reply"] As system. Collections. Generic. List <string>;
List. Add (Message );
}
[Ajaxpro. ajaxmethod]
Public String [] getallreply ()
{
System. Collections. Generic. List <string> List
= Httpcontext. Current. application ["reply"] As system. Collections. Generic. List <string>;
Return list. toarray ();
}
[Ajaxpro. ajaxmethod]
Public selectitem [] getitems (string ID)
{
// Generate simulated data
Selectitem [] items = new selectitem [8];
For (INT I = 0; I <items. length; I ++)
{
Items [I] = new selectitem ();
Items [I]. value = string. Format ("{0} 00 {1}", ID, I );
Items [I]. Text = string. Format ("Project-{0}", I );
}
Return items;
}
}
Put a global file:
<% @ Application language = "C #" %>
<SCRIPT runat = "server">
Void application_start (Object sender, eventargs E)
{
// Code that runs when the application starts
System. Collections. Generic. List <string> List
= New system. Collections. Generic. List <string> ();
Httpcontext. Current. application ["reply"] = List;
}
Void application_end (Object sender, eventargs E)
{
// Code that runs when the application is closed
}
Void application_error (Object sender, eventargs E)
{
// Code that runs when an unhandled error occurs
}
Void session_start (Object sender, eventargs E)
{
// The code that runs when the new session starts
}
Void session_end (Object sender, eventargs E)
{
// The code that runs when the session ends.
// Note: Only the sessionstate mode in the web. config file is set
// The session_end event is triggered only when inproc is used. If the session mode is set to StateServer
// Or sqlserver, the event is not triggered.
}
</SCRIPT>
Page to reference the jquery. Min. js file:
<% @ Page Language = "C #" autoeventwireup = "true" codefile = "default. aspx. cs" inherits = "_ 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> No title page </title>
</Head>
<Body>
<Form ID = "form1" runat = "server">
<Div>
<Input type = "button" value = "get time on the server" onclick = "getservertime ();"/>
</Div>
</Form>
<SCRIPT type = "text/JavaScript">
Function getservertime ()
{
/*
// Synchronous Mode
VaR result = serverservice. getservertime ();
Alert (result. value );
*/
// Asynchronous mode
Serverservice. getservertime (
Function (result)
{
Alert (result. value );
}
);
}
</SCRIPT>
</Body>
</Html>
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