验证文件上载中的文件内容类型 [英] Validating content type of files in file upload

问题描述

在我的网页上有一个文件上传控件。我想检查上传的文件类型是否仅为.wav格式。我尝试使用以下代码

 HttpPostedFile objHPF = objHFC [  fldUpload]; 
  string  contentType = objHPF.ContentType.Split（'  /'）[ 1 ]。ToLower（）; 

并检查是否contenttype =wav...



但是当我在两个浏览器（FF& Chrome）中上传相同的文件时，我在FF和WAV中获得了X-WAV chrome中的内容类型....那么我该怎么做才能检查内容类型以及发生这种情况的原因？请帮助..提前感谢

解决方案

您只需要 C＃Path .GetExtension [ ^ ]



也见这个



检查上传文件的类型 [ ^ ]



问候..：）

还有一件事是你可以在ASP.NET中使用正则表达式验证控件来验证要上传的文件的扩展名。



请参阅此链接。



http：// www.c-sharpcorner.com/UploadFile/99bb20/validation-fo r-file-upload-control-in-Asp-Net / [ ^ ]



使用此链接可以更好地了解文件类型

http://stackoverflow.com/questions/15300567/alternative-to-findmimefromdata-method-in-urlmon-dll-one-which-has-more-mime-typ [ ^ ]

Hi,

In my web page there is a file upload control. I want to check whether the uploaded file type is of .wav format only. I tried with the following code

HttpPostedFile objHPF = objHFC["fldUpload"];
string contentType = objHPF.ContentType.Split('/')[1].ToLower();

and checked whether the contenttype="wav"...

But when i uploaded the same file in two browsers(FF & Chrome) i got X-WAV in FF and WAV as content type in chrome .... So what can i do to check the content type and why this happened? Pls help.. Thanks in advance

解决方案

All you need is C# Path.GetExtension[^]

See this also

Check type of uploaded file[^]

Regards..:)

One more thing is that you can use regular expression validation control in ASP.NET to validate the extension of the file to be uploaded.

Refer this link.

http://www.c-sharpcorner.com/UploadFile/99bb20/validation-for-file-upload-control-in-Asp-Net/[^]

Use this link to get better idea to the file type
http://stackoverflow.com/questions/15300567/alternative-to-findmimefromdata-method-in-urlmon-dll-one-which-has-more-mime-typ[^]

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