MimeCache Class

public static class MimeCache

Public NotInheritable Class MimeCache

public ref class MimeCache abstract sealed

[<AbstractClassAttribute>]
[<SealedAttribute>]
type MimeCache = class end

Inheritance

Object    MimeCache

It's an expensive operation to parse the resources for MIME types and file type extensions. To overcome this issue, a small cache is is hold in memory to retrieve the most frequently used MIME types and file type extensions faster.

The cache is pre-populated with some of the most frequently used file type extensions and MIME types but it "learns" with every query and stores after some time only the data it is recently asked for. The cache doesn't exceed a given Capacity. The default value for this is DefaultCapacity, but you can enlarge the Capacity with EnlargeCapacity(Int32) if your application uses more than 16 different file types.

There is no way to reduce the Capacity, but you can Clear the whole cache. After that, the next time MimeCache is asked for data, it creates a new cache with the DefaultCapacity or a larger one, if you have called EnlargeCapacity(Int32) before.

Reference