Question

我需要在几个ASPX后台代码文件和测试一个条件,在某些情况下,想要完全绕过正常页面加载过程,以便相应的ASPX页面没有加载。大家,我想发送一个自定义响应浏览器年代从后台代码的编写方法。

有谁知道从哪里开始,什么方法(s)在页面生命周期覆盖和最好的技术来确保我的自定义响应。写被发送到浏览器,而正常的ASPX页面内容是镇压?

谢谢。

Answer 1

可能最简单的方法——使用<代码> employee() > < /代码。

protected void Page_Load(object sender, EventArgs e)
{
    bool customResponse = true;
    if (customResponse)
    {
        Response.Write("I am sending a custom response");
        Response.End(); //this is what keeps it from continuing on...
    }
}

Answer 2

The "easy" way to do it, with Response.End() is terrible for performance, throwing an exception which terminates the thread.
http://blogs.msdn.com/b/tmarq/archive/2009/06/25/correct-use-of-system-web-httpresponse-redirect.aspx
http://weblogs.asp.net/hajan/archive/2010/09/26/why-not-to-use-httpresponse-close-and-httpresponse-end.aspx

我有同样的问题,这样解决。这年代一个两步过程:首先调用HttpApplication.CompleteRequest()和退出你的处理。接下来覆盖渲染(),基本方法是不叫的。示例代码就变成了:

bool customResponse = true;

protected void Page_Load(object sender, EventArgs e)
{
    if (customResponse)
    {
        Response.Write("I am sending a custom response");
        this.Context.ApplicationInstance.CompleteRequest();
        return;   // Bypass normal processing.
    }
    // Normal processing...
}

protected override void Render(HtmlTextWriter writer)
{
    if (!customResponse)
        base.Render(writer);        // Then write the page as usual.
}

Answer 3

It really depends what you re responding to, is it a posted Form field, authentication info etc...? The method shown using Page_Load will work, but anything before that point in the page lifecycle will also execute.

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