我有一个重定向问题？ [英] I have a redirect question?

问题描述

我已经为页面制作了重定向页面和代码。在我的登录页面中，我必须重定向链接，我希望用户重定向到。我的问题是，当我尝试重定向到我的重定向页面时，它不会去。所以我更改了我的重定向页面上的代码，并尝试再次与用户登录，然后它转到该页面。为什么我的重定向代码第一次没有工作？为什么当我拿出代码时它才有效？第一个代码是我原来的第二个代码是我改变的代码。



第一个代码：

I am have made a redirect page and code for the page. In my login page I have to redirect link I want the user to redirect to. The question I have is that when I try to redirect to my redirect page it will not go. So I changed the code on my redirect page and tried to login again with a user and it went to that page. Why didn''t my redirect code work the first time? And why did it work when I took out the code? The first code is the original one I had the second is the code I changed.

First code:

protected void Page_Load(object sender, EventArgs e)
    {
        if (Session["New"] != null)
        {
            Label1.Text += Session["New"].ToString();
        }
        else
        {
            Response.Redirect("Login.aspx");
        }
    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        Session["New"] = null;
        Response.Redirect("Login.aspx");
    }
}

第二代码：

Second Code:

protected void Page_Load(object sender, EventArgs e)
    {
        
    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        Session["New"] = null;
        Response.Redirect("Login.aspx");
    }
}

Please Help. 

推荐答案

如评论中所述，您将离开Session [New] = null但更重要的是您的Page_Load未检查IsPostBack所以当点击按钮时，你的page_load代码会在按钮点击代码之前运行。



使用if（！IsPostBack）

As stated in the comments, you are leaving Session["New"] = null but more importantly your Page_Load is not checking for IsPostBack so when the button is clicked, your page_load code runs before your button click code.

Use if (!IsPostBack)

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