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Lazy OsVersion #9

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Lazy OsVersion #9

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38 changes: 24 additions & 14 deletions DesktopToast/Helper/OsVersion.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -17,16 +17,15 @@ public static bool IsEightOrNewer
{
get
{
if (!_isEightOrNewer.HasValue)
{
var ver = GetOsVersionByWmi();
_isEightOrNewer = (ver != null) && (((6 == ver.Major) && (2 <= ver.Minor)) || (7 <= ver.Major));
}

return _isEightOrNewer.Value;
}
}
private static bool? _isEightOrNewer;
private static readonly Lazy<bool> _isEightOrNewer = new Lazy<bool>(GetIsEightOrNewer);

private static bool GetIsEightOrNewer()
{
return (Ver != null) && (((6 == Ver.Major) && (2 <= Ver.Minor)) || (7 <= Ver.Major));
}

/// <summary>
/// Whether OS is Windows 10 or newer
Expand All @@ -36,19 +35,30 @@ public static bool IsTenOrNewer
{
get
{
if (!_isTenOrNewer.HasValue)
{
var ver = GetOsVersionByWmi();
_isTenOrNewer = (ver != null) && (10 <= ver.Major);
}

return _isTenOrNewer.Value;
}
}
private static bool? _isTenOrNewer;
private static readonly Lazy<bool> _isTenOrNewer = new Lazy<bool>(GetIsTenOrNewer);

private static bool GetIsTenOrNewer()
{
return (Ver != null) && (10 <= Ver.Major);
}

#region Helper

/// <summary>
/// OS version.
/// </summary>
private static Version Ver
{
get
{
return _ver.Value;
}
}
private static readonly Lazy<Version> _ver = new Lazy<Version>(GetOsVersionByWmi);

/// <summary>
/// Get OS version.
/// </summary>
Expand Down