IPersist (Interfaces)
Last changed: -216.231.36.102
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Summary
The IPersist interface defines the single method GetClassID, which is designed to supply the CLSID of an object that can be stored persistently in the system. A call to this method can allow the object to specify which object handler to use in the client process, as it is used in the OLE default implementation of marshaling.

    [ComImport, Guid("0000010c-0000-0000-c000-000000000046"),
    InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
    public interface IPersist
    {
        [PreserveSig]
        void GetClassID(out Guid pClassID);
    }

Documentation
IPersist on MSDN