asp.net under the Ajax.ajaxmethod use method _ Practical skills

Use Ajaxmethod to satisfy a few points:
1. If you don't have a ajax.dll file, download the first one to
2. To add Ajax.dll to a project reference: Right-click the project name-"Add Project Reference" in the VS Solution Explorer-Browse, find Ajax.dll OK
3. Webcofig If it is IIS7, you need to add <add name= "ajax" verb= "Post,get path=" ajax/* in <system.webServer></system.webServer>. Ashx "Type=" ajax.pagehandlerfactory, Ajax "/>
2: In the CS program plus
protected void Page_Load (OBJECTSENDER,EVENTARGSE)
{
Ajax.Utility.RegisterTypeForAjax (typeof (ClassName));//classname is the class name of this CS file
}
3: Write Cs method, the method preceded by [Ajax.ajaxmethod ()],
If you want to make the Ajaxmethod inside can call session, write: [Ajax.ajaxmethod (Httpsessionstaterequirement.read)],
Such as:

Copy Code code as follows:

[Ajax.ajaxmethod ()]
public string getaddress (string UserID)
{
String Address= "";
Do somthing to get this address
return address;
}

Note that the method should be written public, otherwise the call in JS will be prompted "Do not support this property or method"

4. Make sure that there are <form runat= "server" ></form> labels on the page.

5. aspx in JavaScript when called with the class name, such as:
var address = classname.getaddress (' 123 '). Value;