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Gets or sets whether the context key should be used for the slide show cell.
public bool UseContextKey { get; set; }
Public Property UseContextKey As Boolean
This property determines whether the ContextKey property should be used.
This is automatically enabled if the ContextKey property is ever set
(on either the client or the server). If the context key is used, it
should have the same signature with an additional parameter
named contextKey of type string.