ASPX文件上传并限制文件类型的ASP.NET源码实例，上传程序将上传文件类型限制为".jpg", ".gif", ".bmp", ".jpeg"四种类型，除此这外的任何类型，都将提示“该文件类型不允许上传”。

貌似在codefans没看到限制文件类型的例子，于是简单写了个帮助下新手，支持codefans-ASPX file upload and limit the file types ASP.NET source code examples, upload upload file types is limited to jpg " ,"　gif " ,"　bmp " ,"　jpeg " four types In addition to this any type will prompt " This file type is not allowed to upload. Seemingly codefans did not see examples of restricted file types, so simple to write a help novice support codefans