PackagePart.GetContentTypeCore Method ()


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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()

Return Value

Type: System.String

The MIME type of the part content.

Exception Condition

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.

.NET Framework
Available since 3.0
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