OperatingSystem.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / clr / src / BCL / System / OperatingSystem.cs / 1305376 / 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; 
    using System.Diagnostics.Contracts;


    [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.MacOSX) {
                throw new ArgumentException( 
                    Environment.GetResourceString("Arg_EnumIllegalVal", (int)platform),
                    "platform"); 
            } 

            if ((Object) version == null) 
                throw new ArgumentNullException("version");
            Contract.EndContractBlock();

            _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"));
            } 
        }

        [System.Security.SecurityCritical]  // auto-generated_required
        public void GetObjectData(SerializationInfo info, StreamingContext context) { 
            if( info == null ) {
                throw new ArgumentNullException("info"); 
            } 
            Contract.EndContractBlock();
 
            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;
                switch(_platform) 
                {
                    case PlatformID.Win32NT: 
                        os = "Microsoft Windows NT "; 
                        break;
                    case PlatformID.Win32Windows: 
                        if ((_version.Major > 4) ||
                            ((_version.Major == 4) && (_version.Minor > 0)))
                            os = "Microsoft Windows 98 ";
                        else 
                            os = "Microsoft Windows 95 ";
                        break; 
                    case PlatformID.Win32S: 
                        os = "Microsoft Win32S ";
                        break; 
                    case PlatformID.WinCE:
                        os = "Microsoft Windows CE ";
                        break;
                    case PlatformID.MacOSX: 
                        os = "Mac OS X ";
                        break; 
                    default: 
                        os = " ";
                        break; 
                }

                if( String.IsNullOrEmpty(_servicePack)) {
                    _versionString = os + _version.ToString(); 
                }
                else { 
                    _versionString = os + _version.ToString(3) + " " + _servicePack; 
                }
 
                return _versionString;
            }
        }
    } 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

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