服务器端运行js,js 调用服务器端方法总结

方法五 直接用XHtmlRequest, client callback, javascript访问Web Service或WebMethod.

以访问WebMethod为例：

1、ScriptManager的EnablePageMethod必须为true.

HTML code

2、服务器方法必须是static方法

C# code

[System.Web.Services.WebMethod]

public static string[] GetStringArray(string s, int cnt)

{

string[] stringArray = new string[cnt];

Random rnd = new Random();

for (int i = 0; i < cnt; i++)

{

stringArray[i] = string.Format("Random{0}: {1}-{2}",i, s, rnd.Next(cnt));

}

//throw new Exception("亲爱的错误");

System.Threading.Thread.Sleep(3000);

return stringArray;

}

3、可以把script代码放到.js文件里，如Scripts目录下的MyScript.js内。

JScript code

function CallWebMethod(prefix,count)

{

$get('result').innerText = "请稍侯...";

PageMethods.GetStringArray(prefix, count, OnSuccess, OnFailed);

return false;

}

function OnSuccess(stringArray)

{

var s = "";

for(var i = 0; i < stringArray.length; i++)

{

s += stringArray[i] + "\n";

}

$get('result').innerText = s;

}

function OnFailed(error, userContext, methodName)

{

if(error != null)

{

alert("发生了亲爱的错误：" + error.get_message());

}

}

//.aspx

HTML code

ID="FilteredTextBoxExtenderCnt" runat="server"

TargetControlID="TextBoxCnt"

ValidChars="1234567890"

>

').value,$get('').value)" />