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最新文章 : ajax

ajax 安全性

完全适用ASP.NET的认证机制
–可以使用FormsAuthentication
•WebService方法可以操作Cookie
–Impersonation
–PrincipalPermission
WebService7.cs Code
using System;
using System.Web;
using System.Collections;
using System.Web.Services;
using System.Web.Services.Protocols;
using System.Web.Script.Services;
/// <summary>
/// WebService7 的摘要说明
/// </summary>
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[ScriptService]
public class WebService7 : System.Web.Services.WebService {
public WebService7 () {
//如果使用设计的组件，请取消注释以下行
//InitializeComponent();
}
[WebMethod]
public string HelloWorld() {
if (!HttpContext.Current.User.Identity.IsAuthenticated)
{
throw new ApplicationException("please Login In");
}
return "Hello "+HttpContext.Current.User.Identity.Name;
}

}
Defa ......

ajax 处理异步刷新中出现的异常

Default3.aspx Code:
<%@Page Language="C#" AutoEventWireup="true" CodeFile="Default3.aspx.cs" Inherits="Default3" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>无标题页</title>
</head>
<body>
<form id="form1" runat="server">
<asp:ScriptManager runat=server ID="scriptmanager"
onasyncpostbackerror="scriptmanager_AsyncPostBackError"></asp:ScriptManager>
<asp:UpdatePanel ID="up" runat=server>
<ContentTemplate>
<asp:Button runat=server Text="button" onclick="Unnamed1_Click" />
</ContentTemplate>
</asp:UpdatePanel>
<div id="errormessage"></div>
<mce:script language=javascript type="text/javascript"><!--
Sys.WebForms.PageRequestManager.getInstance().add_endRe ......

Ajax 错误处理

错误处理
•调用时可以提供一个额外的错误回调函数
•包括超时和服务器端抛出的异常
•超时只能设置在WebService级别
–或者设置在PageMethods对象上
–无法在每个MethodCall时指定
•Sys.Net.WebServiceError
–timedout、message、exceptionType、stackTrace属性
ErrorHandling.asmx Code:
<%@ WebService Language="C#" Class="ErrorHandling" %>
using System;
using System.Web;
using System.Web.Services;
using System.Web.Services.Protocols;
using System.Web.Script.Services;
using System.Threading;
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[ScriptService]
public class ErrorHandling : System.Web.Services.WebService
{
[WebMethod]
public int GetDivision(int a, int b)
{
return a / b;
}
[WebMethod]
public int Timeout()
{
Thread.Sleep(5000);
return 0;
}
}
3_ErrorHandling.aspx Code:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="3_ErrorHandling.aspx.cs" ......

Ajax 复杂数据类型使用基础

复杂数据类型使用基础
•公有属性或公有Field会被释放和接受
•容器对象
–实现IList接口的对象
–实现IDictionary接口的对象
•Key必须是String
WebService2.cs Code：
using System;
using System.Collections;
using System.Web;
using System.Web.Services;
using System.Web.Services.Protocols;
using System.Web.Script.Services;
/// <summary>
///WebService2 的摘要说明
/// </summary>
[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[ScriptService]
public class WebService2 : System.Web.Services.WebService {
public WebService2 () {
//如果使用设计的组件，请取消注释以下行
//InitializeComponent();
}
[WebMethod]
public Employee HelloWorld(Employee employee) {
employee.salary = employee.salary * 2;
return employee;
}
[WebMethod]
public System.Collections.Generic.List<int> ReList(System.Collections.Generic.List<int> ......

Ajax 客户端代理的作用

客户端代理的作用
在对象里做了一个标记
–“__type” = “ComplexType.Color”
服务器端根据标记选择反序列化的目标类型
可出现“多态”效果
Employee.cs Code：
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
/// <summary>
///Employee 的摘要说明
/// </summary>
public abstract class Employee
{
public Employee()
{
//
//TODO: 在此处添加构造函数逻辑
//
}
private string _fristname;
public string Fristname
{
get { return _fristname; }
set { _fristname = value; }
}
private string _lastname;
public string Lastname
{
get { return _lastname; }
set { _lastname = value; }
}
private int _year;
public int Year
{
get { return _year; }
......

Ajax框架

var XmlHttp;
var PathUrl;
function createXmlHttp() {
    if (window.ActiveXObject) {
        return new ActiveXObject("Microsoft.XMLHTTP");
    }
    else if (window.XMLHttpRequest) {
        return new XMLHttpRequest();
    }
}
function goAjax() {
    XMLHttpRequest = createXmlHttp();
    XMLHttpRequest.onreadystatechange = window[funName];
    XMLHttpRequest.open("POST", PathUrl, true);
    XMLHttpRequest.send(null);
}
function goAjaxMethod(funName, path) {
    PathUrl = path;
    if (goAjaxMethod.length < arguments.length) {
        PathUrl = PathUrl + "?";
        for (var index = goAjaxMethod.length; index < arguments.length; index = index + 2) {
     ......

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