Get original Guid that this sheet was created with. Guid may be modified to ensure all sheets have unique Guids. If the same sheet is added to a document twice, each sheet has the same SourceGuid but different Guids.

Public ReadOnly Property SourceGuid As Guid
	Get

public Guid SourceGuid { get; }

public:
property Guid SourceGuid {
	Guid get ();
}