如何知道字符串是否表示有效的MIME类型？-HowcanIknowifastringrepresentsavalidMIMEtype?

Check out this stack overflow post about adding custom mime types.

查看有关添加自定义mime类型的堆栈溢出帖子。

You should be able to do something like

你应该能够做类似的事情

using (DirectoryEntry mimeMap = new DirectoryEntry("IIS://Localhost/MimeMap"))
{
    PropertyValueCollection propValues = mimeMap.Properties["MimeMap"];
    foreach(IISOle.MimeMap mimeType in propValues) 
    //must cast to the interface and not the class
    {
      //access mimeType.MimeType to get the mime type string.
    }
}

IANA have a list here. I would think that is more of an authority than most lists you can find.

IANA在这里有一个列表。我认为这比你能找到的大多数名单更具权威性。

while it's not canonical in the sense of being driven by a standard, the mime.types file delivered with any version of Apache will give you a good idea as to what it (and, therefore, a great deal of the web) thinks are valid MIME types.

虽然在标准驱动的意义上它不是规范的,但是随任何版本的Apache提供的mime.types文件都会让你对它(以及因此大量的网络)认为有效的内容有所了解。 MIME类型。

Following up from DDaviesBracket, you can find the latest mime.types here:

从DDaviesBracket开始,你可以在这里找到最新的mime.types:

http://svn.apache.org/repos/asf/httpd/httpd/trunk/docs/conf/mime.types

and then consume the list (e.g. for C#):

然后使用列表(例如,对于C#):

string[] linesOfMimeTypes = File.ReadAllLines("mime.types");

List mimeTypes = new List();
foreach( string line in linesOfMimeTypes )
{
    if( line.length <1 )
        continue;
    if( line[0] == '#' )
        continue;
    // else:
    mimeTypes.Add( line.Split( new char[] { ' ', '\t' } )[0] );
}

if( mimeTypes.Contains( oneToTest ) )
{
    // hooray!
}