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PackagePart.GetContentTypeCore Method

When overridden in a derived class, returns the MIME type of the part content.

Namespace:  System.IO.Packaging
Assembly:  WindowsBase (in WindowsBase.dll)

protected virtual string GetContentTypeCore()
You cannot use methods in XAML.

Return Value

Type: System.String
The MIME type of the part content.


The derived class does not provide an override implementation required for the GetContentTypeCore method.

GetContentTypeCore is a virtual method of the PackagePart abstract base class. Implement this method only in derived types where the value for the content type cannot be provided at the time of construction, or if calculating the content type value is a nontrivial or costly operation. The return value must be a valid MIME content type.

Derived classes can call GetContentTypeCore to initialize the ContentType property of the derived class to a default value. After the ContentType property has been set it cannot be changed.

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0