OperatingSystem.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / FX-1434 / FX-1434 / 1.0 / 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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