using System;
using System.Web;
using System.Web.Services;
using System.Web.Services.Protocols;
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[System.Web.Script.Services.ScriptService]
public class TestWebService : System.Web.Services.WebService {
[WebMethod]
public string HelloWorld(string firstName, string lastName) {
return string.Format("Hello {0} {1}", firstName, lastName);
}
[WebMethod]
public string ExceptionMethod(int param) {
throw new NotImplementedException("该方法未实现");
}
}

function CallHelloWorld() {
    Ext.Ajax.request({
        url: 'TestWebService.asmx/HelloWorld', // Webservice的地址以及方法名
        jsonData: { firstName: 'AAA', lastName: 'BBB' }, // json 形式的参数
        method: 'POST', // poste 方式传递
        success: onSuccess,
        failure: onFailure
    });
}
function CallExceptionMethod() {
    Ext.Ajax.request({
        url: 'TestWebService.asmx/ExceptionMethod',
        jsonData: { param: 3 },
        method: 'POST',
        success: onSuccess,
        failure: onFailure
    });
}
function onSuccess(request, options) {
    // 服务器返回json形式的结果
    var result = Ext.util.JSON.decode(request.responseText);
    Ext.Msg.alert('返回结果', result.d);
}
function onFailure(request, options) {
    alert(request.responseText);
}