Can I intercept a file upload over HTTP to IIS7 and deny the upload based on a validation criteria?

Question

I have a form which you can post a file over to my server.

Is there a way, without using a custom HTTP handler, to intercept the start of the post and prevent it before the file is uploaded and bandwidth used up.

So for example, I could check an IP address and if it's blocked in my system I could stop the request before I waste 10MB of uploading.

Thanks!

EDIT:

I'm using ASP.NET MVC

Answer 1

据我所知，使用股票.NET代码是不可能的，除非您花时间重新创建文件处理并解析ASP.NET。

Answer 2

This is really a job for a HttpModule, not a HttpHandler. Just check remote IP against a blacklist in the BeginRequest event and null route or what have you.

Answer 3

在ASP.Net 2.0中，添加了一个新的FileUpload控件 ，该控件可用于限制文件类型和大小等。