ASP.NET防后退
如有页面Admin,则在其cs文件中写如下代码:
protected void Page_Load(object sender, EventArgs e)
{
Response.AddHeader("Cache-Control", "no-cache");
Response.Expires = -1;
Response.Cache.SetNoStore();
Response.AddHeader("Pragma", "no-cache");
Response.AddHeader("Last-Modified", DateTime.Now.ToString() + " GMT");
Response.Cache.SetCacheability(HttpCacheability.NoCache);
if (Session["AdminNumber"] == null)
{
Response.Redirect("~/Login.aspx");
}
}
在Login页的cs文件中写如下代码:
protected void Page_Load(object sender, EventArgs e)
{
Response.AddHeader("Cache-Control", "no-cache");
Response.Expires = -1;
Response.Cache.SetNoStore();
Response.AddHeader("Pragma", "no-cache");
Response.AddHeader("Last-Modified", DateTime.Now.ToString() + " GMT");
Response.Cache.SetCacheability(HttpCacheability.NoCache);
if (!IsPostBack)
{
Session.Clear();
}
}
如此便可轻松拒绝页面的回退!
相关文档:
protected void Page_Load(object sender, EventArgs e)
{
}
#region OnPreInit 第一步
protected override void OnPreInit(EventArgs e)
{
//检查 ......
+++ HiddenField01.aspx页面
++ 页面代码如下:
<asp:HiddenField ID="HiddenField1" runat="server" />
<asp:HiddenField ID="HiddenField2" runat="server" />
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Button" />
++ 后台代码,如下:
protected void Button1_C ......
第一种播放器代码:
<object title="dvubb" align="middle" classid="CLSID:22d6f312-b0f6-11d0-94ab-0080c74c7e95" class="object" id="MediaPlayer" width="480" height="360">
<param name="AUTOSTART" value="true"/>
<param name="ShowStatusBar" value="-1"/>
<param name="Filename" va ......
使用flash开发的SWFUpload上传组件有很多好处,支持进度条是其中一种好处,下面是asp.net封装SWFUpload下载地址:
效果图:
如果直接拷贝SWFUpload文件夹到你的项目
记得必须引用SWFUploadAPI.dll
点击此处下载:SWFUpload.rar
文章来自学IT网:http://www.xueit.com/html/2010-05/21-12561321642010518215213640 ......