Services属性

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Services用来管理对WebService的调用，通过<asp:ServiceReference>标签可以在Services中注册一个WebService，在运行时ScriptManager将为每一个ServiceReference对象生成一个客户端代理，<asp:ServiceReference>标签一个很重要的属性是Path，用来指定WebService的路径，如下所示：

<asp:ScriptManager ID="SM1" runat="server">

<asp:ServiceReference Path="Service.asmx"/>

</Services>

</asp:ScriptManager>

看一个简单的调用WebService的例子：

WebService如下，注意在WebServiceSample上加ScriptService特性：

[ScriptService]

public class WebServiceSample : System.Web.Services.WebService {

public WebServiceSample()

{

//Uncomment the following line if using designed components

//InitializeComponent();

}

[WebMethod]

public string EchoString(String s)

{

return "Hello " + s;

}

ASPX页面：

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default3.aspx.cs" Inherits="Default3" %>

<title>Untitled Page</title>

</head>

function OnbuttonGo_click()

{

requestSimpleService = WebServiceSample.EchoString(

document.getElementById('inputName').value, //params

OnRequestComplete //Complete event

);

return false;

}

function OnRequestComplete(result)

{

alert(result);

}

</script>

<body>

<asp:ScriptManager ID="ScriptManager1" runat="server">

<asp:ServiceReference Path="WebServiceSample.asmx"/>

</Services>

</asp:ScriptManager>

<div>

</form>

</body>

</html>

运行后效果如下：

当然了也可以在运行时动态的在Services中加入ServiceReference，下面看一个运行时动态加入ServiceReference的例子：

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default3.aspx.cs" Inherits="Default3" %>

void Page_Load(object sender, EventArgs e)

{

ServiceReference sr = new ServiceReference();

sr.Path = "WebServiceSample.asmx";

ScriptManager1.Services.Add(sr);

}

</script>

<title>Untitled Page</title>

</head>

function OnbuttonGo_click()

{

requestSimpleService = WebServiceSample.EchoString(

document.getElementById('inputName').value, //params

OnRequestComplete //Complete event

);

return false;

}

function OnRequestComplete(result)

{

alert(result);

}

</script>

<body>

<asp:ScriptManager ID="ScriptManager1" runat="server">

</asp:ScriptManager>

<div>

</form>

</body>

</html>

可以看到运行后和在ScriptManager中直接加入的效果是一样的。