Question 86488 in ASP.NET Question posted in
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How to Get the File Extension from IFromFile MicorsoftAspNetCore – Asp.net

I’m trying to get the simple file extension for example "XLSX","pdf" and so on instead of the whole raw Content-type when I use IFromFile.ContenType gives me the raw content-type header on the uploaded file, any help is really appreciated

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  1. 0

    If you are looking for the extension type, Use

    var extension = Path.GetExtension(Server.MapPath("file.txt"));

    For the Mime type

    var mimeType  = MimeMapping.GetMimeMapping("file.txt");
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  2. 0

    For getting file extension from uploaded file (IFormFile), Use:

    System.IO.Path.GetExtension(file.FileName)
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