IHttpHandler.ProcessRequest(HttpContext) 方法

定义

命名空间:

System.Web

程序集:

System.Web.dll

通过实现 IHttpHandler 接口的自定义 HttpHandler 启用 HTTP Web 请求的处理。

public:
 void ProcessRequest(System::Web::HttpContext ^ context);

public void ProcessRequest (System.Web.HttpContext context);

abstract member ProcessRequest : System.Web.HttpContext -> unit

Public Sub ProcessRequest (context As HttpContext)

参数

context

HttpContext

HttpContext 对象，该对象提供对用于为 HTTP 请求提供服务的内部服务器对象（如 Request、Response、Session 和 Server）的引用。

示例

下面的代码示例将四行文本写入 HTTP 输出流，以响应客户端对名为 handler.aspx 的页面的请求。 handler.aspx 的所有请求都由 MyHttpHandler 程序集HandlerTest.dll中包含的命名空间 HandlerExample 中的 类提供服务。

// Name this C# file HandlerTest.cs and compile it with the
// command line: csc /t:library /r:System.Web.dll HandlerTest.cs.
// Copy HandlerTest.dll to your \bin directory.

using System.Web;

namespace HandlerExample
{
   public class MyHttpHandler : IHttpHandler
   {
      // Override the ProcessRequest method.
      public void ProcessRequest(HttpContext context)
      {
         context.Response.Write("<H1>This is an HttpHandler Test.</H1>");
         context.Response.Write("<p>Your Browser:</p>");
         context.Response.Write("Type: " + context.Request.Browser.Type + "<br>");
         context.Response.Write("Version: " + context.Request.Browser.Version);
      }

      // Override the IsReusable property.
      public bool IsReusable
      {
         get { return true; }
      }
   }
}

/*
______________________________________________________________

To use this handler, include the following lines in a Web.config file.

<configuration>
   <system.web>
      <httpHandlers>
         <add verb="*" path="handler.aspx" type="HandlerExample.MyHttpHandler,HandlerTest"/>
      </httpHandlers>
   </system.web>
</configuration>
*/

' Name this Visual Basic file HandlerTest.vb and compile it with the
' command line: vbc /target:library /r:System.Web.dll HandlerTest.vb.
' Copy HandlerTest.dll to your \bin directory.
Imports System.Web

Namespace HandlerExample
    
    Public Class MyHttpHandler
        Implements IHttpHandler
        
        ' Override the ProcessRequest method.
        Public Sub ProcessRequest(context As HttpContext) _
        Implements IHttpHandler.ProcessRequest
        
            context.Response.Write("<H1>This is an HttpHandler Test.</H1>")
            context.Response.Write("<p>Your Browser:</p>")
            context.Response.Write("Type: " & context.Request.Browser.Type & "<br>")
            context.Response.Write("Version: " & context.Request.Browser.Version)
        End Sub
        
        ' Override the IsReusable property.        
        Public ReadOnly Property IsReusable() As Boolean _
        Implements IHttpHandler.IsReusable
        
            Get
                Return True
            End Get
        End Property
    End Class
End Namespace

'______________________________________________________________
'
' To use this handler, include the following lines in a
' Web.config file (be sure to remove the comment markers).
'
'         <add verb="*" path="handler.aspx" type="HandlerExample.MyHttpHandler,HandlerTest"/>

注解

将自定义 HttpHandler 代码放入虚拟方法中 ProcessRequest ，如示例部分所示。