SystemInformation.LaunchCount Property   
Definition
Important
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Gets the number of times the app has been launched.
Will be 0 if TrackAppUse(IActivatedEventArgs, XamlRoot) has not been called yet.
public static long LaunchCount { get; }
	public long LaunchCount { get; }
	static member LaunchCount : int64
	member this.LaunchCount : int64
	Public Shared ReadOnly Property LaunchCount As Long
	Public ReadOnly Property LaunchCount As Long