How to check uploaded file in fileupload is video file or not using C#

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How to check uploaded file in fileupload is video file or not using C#.
if any one change the extension of any file in video format like .avi,.mp4 etc that time it must be not upload and throw error...

Posted 27-Jul-14 18:52pm

krrazyumesh

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Sergey Alexandrovich Kryukov 28-Jul-14 1:24am

Why? Do you support all the video files, or just store them? If you cannot play that video file (or whatever you want to do with it), you can consider it as not a video file. Isn't it logical? There are too many different formats, and most of the formats supports different combinations of codecs.
—SA

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m.kolbadi · Answer 1 · 2014-07-27T19:42:00

Solution 1

C#

string fileName = FileUpload1.FileName;
           string FileExtension = fileName.Substring(fileName.LastIndexOf('.') + 1).ToLower();
           if (FileExtension == "flv" || FileExtension == "wmv")
           {



           }

Posted 27-Jul-14 19:42pm

m.kolbadi

Updated 27-Jul-14 19:43pm

Comments

krrazyumesh 28-Jul-14 2:31am

it work but i have one problem if i change the extension of .exe to .avi or any video formate and upload it then it uploaded. but i don't want like this

Gihan Liyanage · Answer 2 · 2014-07-27T19:47:00

As Sergey said it is not logical if you want to play it.
Any way you can try with following Java Script function for check formats.

function ValidateVideoupload(Source, flag)
{
var pathTextBox = document.getElementById('txtBoxFilePath');
var FileUploadPath = pathTextBox.value;

var FileExtension = FileUploadPath.substring(FileUploadPath.lastIndexOf('.') + 1).toLowerCase();

if (FileExtension == "AVI"||FileExtension == "MP4"||FileExtension == "DAT"||FileExtension == "MPEG"||FileExtension == "3gp")
{
flag.IsValid = true; // Allow to upload Video File
}
else
{
flag.IsValid = false; // Don't allow to upload Video file
}

}

}