MimeStringFromFileName(ReadOnlySpanChar) Method

Converts a file name into an Internet Media Type ("MIME type").

Definition

Namespace: FolkerKinzel.MimeTypes
Assembly: FolkerKinzel.MimeTypes (in FolkerKinzel.MimeTypes.dll) Version: 1.0.0+7dd5ca03f25d4802263abb2083f9c7add2cb51ec

C#

public static string FromFileName(
	ReadOnlySpan<char> fileName
)

VB

Public Shared Function FromFileName ( 
	fileName As ReadOnlySpan(Of Char)
) As String

C++

public:
static String^ FromFileName(
	ReadOnlySpan<wchar_t> fileName
)

F#

static member FromFileName : 
        fileName : ReadOnlySpan<char> -> string

Parameters

fileName ReadOnlySpanChar: A file path, file name, file type extension (no matter whether with or without the period "."), or null.

Return Value

String
An appropriate Internet Media Type ("MIME type") for fileName.

Remarks

If no other Internet Media Type could be found, OctetStream is returned.

Internally a small memory cache is used to retrieve often used Internet Media Types faster. You can enlarge the size of this cache with MimeCache.EnlargeCapacity(int) or you can delete it with MimeCache.Clear() if your application does not need it anymore.

Example

Convert a file name into an Internet Media Type and get a file type extension from an internet media type:

C#

using FolkerKinzel.MimeTypes;

namespace Examples;

public static class FileExtensionExample
{
    public static void Example()
    {
        const string path = @"C:\Users\Tester\Desktop\Interesting Text.odt";

        string mimeType = MimeString.FromFileName(path);

        Console.Write($"The MIME type for \"{path}\" is: ");
        Console.WriteLine(mimeType);
        Console.Write("The file type extension for this MIME type is: ");
        Console.WriteLine(MimeString.ToFileTypeExtension(mimeType));
    }
}
/*
Console Output:

The MIME type for "C:\Users\Tester\Desktop\Interesting Text.odt" is: application/vnd.oasis.opendocument.text
The file type extension for this MIME type is: .odt
 */