Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / clr / src / BCL / System / OperatingSystem.cs / 1 / OperatingSystem.cs
// ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== /*============================================================ ** ** Class: OperatingSystem ** ** ** Purpose: ** ** ===========================================================*/ namespace System { using System.Runtime.Serialization; using System.Globalization; using System.Security.Permissions; using System.Runtime.InteropServices; [ComVisible(true)] [Serializable()] public sealed class OperatingSystem : ICloneable , ISerializable { private Version _version; private PlatformID _platform; private string _servicePack; private string _versionString; private OperatingSystem() { } public OperatingSystem(PlatformID platform, Version version) : this(platform, version, null) { } internal OperatingSystem(PlatformID platform, Version version, string servicePack) { if( platform < PlatformID.Win32S || platform > PlatformID.Unix) { throw new ArgumentException( String.Format(CultureInfo.CurrentCulture, Environment.GetResourceString("Arg_EnumIllegalVal"), (int)platform), "platform"); } if ((Object) version == null) throw new ArgumentNullException("version"); _platform = platform; _version = (Version) version.Clone(); _servicePack = servicePack; } private OperatingSystem(SerializationInfo info, StreamingContext context) { SerializationInfoEnumerator enumerator = info.GetEnumerator(); while( enumerator.MoveNext()) { switch( enumerator.Name) { case "_version": _version = (Version) info.GetValue("_version", typeof(Version)); break; case "_platform": _platform = (PlatformID) info.GetValue("_platform", typeof(PlatformID)); break; case "_servicePack": _servicePack = info.GetString("_servicePack"); break; } } if (_version == null ) { throw new SerializationException(Environment.GetResourceString("Serialization_MissField", "_version")); } } [SecurityPermissionAttribute(SecurityAction.LinkDemand, Flags=SecurityPermissionFlag.SerializationFormatter)] public void GetObjectData(SerializationInfo info, StreamingContext context) { if( info == null ) { throw new ArgumentNullException("info"); } info.AddValue("_version", _version); info.AddValue("_platform", _platform); info.AddValue("_servicePack", _servicePack); } public PlatformID Platform { get { return _platform; } } public string ServicePack { get { if( _servicePack == null) { return string.Empty; } return _servicePack; } } public Version Version { get { return _version; } } public Object Clone() { return new OperatingSystem(_platform, _version, _servicePack ); } public override String ToString() { return VersionString; } public String VersionString { get { if(_versionString != null) { return _versionString; } String os; if (_platform == PlatformID.Win32NT) os = "Microsoft Windows NT "; else if (_platform == PlatformID.Win32Windows) { if ((_version.Major > 4) || ((_version.Major == 4) && (_version.Minor > 0))) os = "Microsoft Windows 98 "; else os = "Microsoft Windows 95 "; } else if (_platform == PlatformID.Win32S) os = "Microsoft Win32S "; else if (_platform == PlatformID.WinCE) os = "Microsoft Windows CE "; else os = ""; if( String.IsNullOrEmpty(_servicePack)) { _versionString = os + _version.ToString(); } else { _versionString = os + _version.ToString(3) + " " + _servicePack; } return _versionString; } } } }
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