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Simple Ajax + WebService example

Source: Internet
Author: User
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I have always thought that WebService is only used to provide functional modules for external special business services, so I have always used the ashx File Processing backend. Today I read other people's articles and suddenly understand, webService can also process Ajax requests, and a file can process multiple requests at the same time, which is much more convenient than ashx and does not need to be created.

The following are two simple examples.

HTML section

View code

<HTML xmlns = "http://www.w3.org/1999/xhtml">
<Head runat = "server">
<Title> No title page </title>
<SCRIPT type = "text/JavaScript" src = "JS/jquery-1.6.1.min.js"> </SCRIPT>
<SCRIPT type = "text/JavaScript">
// The first test example
Function helloworld ()
{
$. Ajax ({
Type: "Post ",
URL: "WebService. asmx/helloworld ",
Data: "name = John ",
Success: function (MSG ){
Alert ("data saved:" + MSG );
}
});
}
// Add two numbers
Function add ()
{
$. Ajax ({
Type: "Post ",
URL: "WebService. asmx/Add ",
Data: "A =" + $ ("# text1"). Val () + "& B =" + $ ("# text2"). Val (),
Success: function (MSG ){

$ ("# Text3"). Val (MSG );
}
});

}
 
</SCRIPT>

</Head>
<Body>
<Form ID = "form1" runat = "server">
<Div>
<Input id = "hello" type = "button" value = "button" onclick = "helloworld ()"/>

<Br/>


<Br/>
NUMA: <input id = "text1" style = "width: 31px" type = "text"/>
+ Numb: <input id = "text2" style = "width: 33px" type = "text" onblur = "add ()"/>
= <Input id = "text3" style = "width: 33px" type = "text"/> </div>
</Form>

</Body>
</Html>

WebService Section

 

View code

Using system;
Using system. Web;
Using system. collections;
Using system. Web. Services;
Using system. Web. Services. Protocols;

/// <Summary>
/// Summary of WebService
/// </Summary>
[WebService (namespace = "http://tempuri.org/")]
[Webservicebinding (conformsto = wsiprofiles. basicprofile1_1)]
Public class WebService: system. Web. Services. WebService {

Public WebService (){

// If you use the designed component, uncomment the following line
// Initializecomponent ();
}

[Webmethod]
Public void helloworld (){
If (context. request ["name"]! = NULL)
{
Context. response. Write (context. request ["name"]. tostring ());
}
Else
{
Context. response. Write ("no ");
}
}
[Webmethod]
Public String Hello (string name)
{
Return string. Format ("Hello {0}", name );
}
[Webmethod]
Public void add ()
{
If (context. request ["A"]! = NULL & context. request ["A"]! = NULL)
{

Int anum = int. parse (context. request ["A"]. tostring ());
Int bnum = int. parse (context. request ["B"]. tostring ());
Int result = anum + bnum;
Context. response. Write (result. tostring ());
}
Else
{
Context. response. Write ("no ");
}

}


}

 

Do not forget to reference the jquery. JS File

 

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

Related Keywords:
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