响应。重定向在第一个页面到达客户端后将页面重定向到另一个页面。所以客户端知道重定向。

服务器。传输退出页面的当前执行。客户端不知道重定向。它允许您传输查询字符串和表单变量。

所以这取决于你的需要来选择哪个更好。

Response.Redirect Response.Redirect() will send you to a new page, update the address bar and add it to the Browser History. On your browser you can click back. It redirects the request to some plain HTML pages on our server or to some other web server. It causes additional roundtrips to the server on each request. It doesn’t preserve Query String and Form Variables from the original request. It enables to see the new redirected URL where it is redirected in the browser (and be able to bookmark it if it’s necessary). Response. Redirect simply sends a message down to the (HTTP 302) browser.

Server.Transfer Server.Transfer() does not change the address bar, we cannot hit back.One should use Server.Transfer() when he/she doesn’t want the user to see where he is going. Sometime on a "loading" type page. It transfers current page request to another .aspx page on the same server. It preserves server resources and avoids the unnecessary roundtrips to the server. It preserves Query String and Form Variables (optionally). It doesn’t show the real URL where it redirects the request in the users Web Browser. Server.Transfer happens without the browser knowing anything, the browser request a page, but the server returns the content of another.

服务器。传输不会改变客户端浏览器中的URL，因此实际上浏览器并不知道您更改了另一个服务器端处理程序。响应。重定向告诉浏览器移动到另一个页面，因此标题栏中的url会发生变化。

服务器。传输稍微快一点，因为它避免了到服务器的一次往返，但不更改url可能对您有好处，也可能有坏处，这取决于您想要做什么。

更多关于Transfer()的细节，它实际上是Server.Execute() + Response.End()，它的源代码如下(来自Mono/.net 4.0):

public void Transfer (string path, bool preserveForm)
{
    this.Execute (path, null, preserveForm, true);
    this.context.Response.End ();
}

对于Execute()，它要运行的是给定路径的处理程序，参见

ASP.NET does not verify that the current user is authorized to view the resource delivered by the Execute method. Although the ASP.NET authorization and authentication logic runs before the original resource handler is called, ASP.NET directly calls the handler indicated by the Execute method and does not rerun authentication and authorization logic for the new resource. If your application's security policy requires clients to have appropriate authorization to access the resource, the application should force reauthorization or provide a custom access-control mechanism. You can force reauthorization by using the Redirect method instead of the Execute method. Redirect performs a client-side redirect in which the browser requests the new resource. Because this redirect is a new request entering the system, it is subjected to all the authentication and authorization logic of both Internet Information Services (IIS) and ASP.NET security policy. -from MSDN

响应。重定向:告诉浏览器可以在新的位置找到所请求的页面。然后，浏览器向新页面发起另一个请求，在浏览器中加载其内容。这将导致浏览器产生两个请求。

服务器。转移:它将执行从服务器上的第一个页面转移到第二个页面。就浏览器客户端而言，它只发出一个请求，初始页面就是响应内容的页面。 这种方法的好处是减少了一次从客户机浏览器到服务器的往返。此外，任何提交的表单变量和查询字符串参数也可用于第二个页面。

传输完全是服务器端的。客户端地址栏保持不变。请求之间上下文的传输有些复杂。刷新和重新启动页面处理程序可能是昂贵的，所以在管道的早期进行传输，例如在BeginRequest期间的HttpModule中。仔细阅读MSDN文档，并测试和理解HttpContext的新值。请求——特别是在回发场景中。我们通常使用服务器。转换为错误场景。

重定向以302状态终止请求，客户端往返响应并在内部吃掉一个异常(轻微的服务器性能打击-取决于你每天做多少)客户端然后导航到新地址。浏览器地址栏和历史更新等。客户端支付额外的往返费用-费用取决于延迟。在我们的业务中，我们重定向了很多，我们编写了自己的模块来避免异常成本。