RegionInfo.cs source code in C# .NET

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Code:

                         / DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / clr / src / BCL / System / Globalization / RegionInfo.cs / 1 / RegionInfo.cs
                        

                        
                            // ==++== 
//
//   Copyright (c) Microsoft Corporation.  All rights reserved.
//
// ==--== 
/* SSS_WARNINGS_OFF */
//////////////////////////////////////////////////////////////////////////// 
// 
//  Class:    RegionInfo
// 
//  Purpose:  This class represents settings specified by de jure or
//            de facto standards for a particular country or region.  In
//            contrast to CultureInfo, the RegionInfo does not represent
//            preferences of the user and does not depend on the user's 
//            language or culture.
// 
//  Date:     March 31, 1999 
//
//////////////////////////////////////////////////////////////////////////// 
/* SSS_WARNINGS_ON */
namespace System.Globalization {

    using System; 
    using System.Runtime.Serialization;
 
    [Serializable] 
[System.Runtime.InteropServices.ComVisible(true)]
    public class RegionInfo 
    {
        //--------------------------------------------------------------------//
        //                        Internal Information                        //
        //-------------------------------------------------------------------// 

        // 
        //  Variables. 
        //
        internal String m_name; 

        //
        // m_cultureId only used for serialization to detect if we have created the Region using LCID.
        // When creating region using culture Id we fake the name (for compatibility) so during the 
        // deserialization we need to detect if we have faked name or real name.
        // 
        [OptionalField(VersionAdded = 2)] 
        int m_cultureId;
 
        //
        // The CultureTable instance that we are going to read data from.
        // For supported culture, this will be the CultureTable instance that read data from mscorlib assembly.
        // For customized culture, this will be the CultureTable instance that read data from user customized culture binary file. 
        //
        [NonSerialized]internal CultureTableRecord m_cultureTableRecord; 
 
        internal static RegionInfo m_currentRegionInfo;
 

        ////////////////////////////////////////////////////////////////////////
        //
        //  RegionInfo Constructors 
        //
        //////////////////////////////////////////////////////////////////////// 
 

        public RegionInfo(String name) { 
            if (name==null)
                throw new ArgumentNullException("name");
            if (name.Length == 0)
                throw new ArgumentException(Environment.GetResourceString("Argument_InvalidRegionName", name), "name"); 
            this.m_name = name.ToUpper(CultureInfo.InvariantCulture);
 
            m_cultureId = 0; 

            // 
            // First try it as an entire culture. We must have user override as true here so
            // that we can pick up custom cultures *before* built-in ones (if they want to
            // prefer built-in cultures they will pass "us" instead of "en-US").
            // 
            this.m_cultureTableRecord = CultureTableRecord.GetCultureTableRecordForRegion(name, true);
 
            if (this.m_cultureTableRecord.IsNeutralCulture) { 
                // Not supposed to be neutral
                throw new ArgumentException(Environment.GetResourceString("Argument_InvalidNeutralRegionName", name), "name"); 
            }
        }

 
        public RegionInfo(int culture) {
            // Get the culture data item. 
 
            if (culture == CultureInfo.LOCALE_INVARIANT) { //The InvariantCulture has no matching region
                throw new ArgumentException(Environment.GetResourceString("Argument_NoRegionInvariantCulture")); 
            }

            if (CultureTableRecord.IsCustomCultureId(culture)) { // Customized culture
                throw new ArgumentException(Environment.GetResourceString("Argument_CustomCultureCannotBePassedByNumber", "culture")); 
            }
            if (CultureInfo.GetSubLangID(culture) == 0) 
            { 
                // Supposed to have sublang (region) info
                throw new ArgumentException(Environment.GetResourceString("Argument_CultureIsNeutral", culture), "culture"); 
            }

            //
            // From this region data item, get the region data item. 
            // Several culture ID may map to the same region.
            // For example, 0x1009 (English (Canada)) and 0x0c0c (French (Canada)) all map to 
            // the same region "CA" (Canada). 
            //
            this.m_cultureTableRecord = CultureTableRecord.GetCultureTableRecord(culture, true); 

            if (this.m_cultureTableRecord.IsNeutralCulture) {
                // Not supposed to be neutral
                throw new ArgumentException(Environment.GetResourceString("Argument_CultureIsNeutral", culture), "culture"); 
            }
 
            // Make sure that we initialize m_name since it will be used in deserialization. 
            this.m_name = this.m_cultureTableRecord.SREGIONNAME;
 
            m_cultureId = culture;
        }

        internal RegionInfo(CultureTableRecord table) 
        {
            this.m_cultureTableRecord = table; 
            // Make sure that we initialize m_name since it will be used in deserialization. 
            this.m_name = this.m_cultureTableRecord.SREGIONNAME;
        } 

#region Serialization
        // the following field is defined to keep the compatibility with Everett.
        // don't change/remove the names/types of these field. 
        internal int m_dataItem;
 
        [OnDeserialized] 
        private void OnDeserialized(StreamingContext ctx)
        { 
            if (m_name == null)
            {
                BCLDebug.Assert(m_dataItem >= 0, "[RegionInfo.OnDeserialized] null name and invalid dataItem");
                m_cultureTableRecord = CultureTableRecord.GetCultureTableRecord(CultureTableRecord.IdFromEverettRegionInfoDataItem(m_dataItem), true); 
                m_name = m_cultureTableRecord.SREGIONNAME;
            } 
            else 
            {
                if (m_cultureId != 0) 
                    m_cultureTableRecord = CultureTableRecord.GetCultureTableRecord(m_cultureId, true);
                else
                    m_cultureTableRecord = CultureTableRecord.GetCultureTableRecordForRegion(m_name, true);
            } 
        }
 
        [OnSerializing] 
        private void OnSerializing(StreamingContext ctx)
        { 
            m_dataItem = m_cultureTableRecord.EverettRegionDataItem();
        }
#endregion Serialization
 
        ////////////////////////////////////////////////////////////////////////
        // 
        //  GetCurrentRegion 
        //
        //  This instance provides methods based on the current user settings. 
        //  These settings are volatile and may change over the lifetime of the
        //  thread.
        //
        //////////////////////////////////////////////////////////////////////// 

 
        public static unsafe RegionInfo CurrentRegion { 
            get {
                RegionInfo temp = m_currentRegionInfo; 
                if (temp == null)
                {
                    temp = new RegionInfo(CultureInfo.CurrentCulture.m_cultureTableRecord);
 
                    // Need full name for custom cultures
                    if (temp.m_cultureTableRecord.IsCustomCulture) 
                    { 
                        temp.m_name=temp.m_cultureTableRecord.SNAME;
                    } 
                    m_currentRegionInfo = temp;
                }
                return temp;
            } 
        }
 
        //////////////////////////////////////////////////////////////////////// 
        //
        //  GetName 
        //
        //  Returns the name of the region in the UI language.
        //
        //////////////////////////////////////////////////////////////////////// 

 
        public virtual String Name { 
            get {
                if (m_name == null) { 
                    m_name = this.m_cultureTableRecord.SREGIONNAME;
                }
                return (m_name);
            } 
        }
 
        //////////////////////////////////////////////////////////////////////// 
        //
        //  GetEnglishName 
        //
        //  Returns the name of the region in English.
        //
        //////////////////////////////////////////////////////////////////////// 

 
        public virtual String EnglishName 
        {
            get 
            {
/* SSS_WARNINGS_OFF */                return (this.m_cultureTableRecord.SENGCOUNTRY); /* SSS_WARNINGS_ON */
            }
        } 

 
        public virtual String DisplayName 
        {
            get 
            {
                if (m_cultureTableRecord.IsCustomCulture)
                {
                    if (m_cultureTableRecord.IsReplacementCulture) 
                    {
                        //  
                        if (m_cultureTableRecord.IsSynthetic) 
                            return m_cultureTableRecord.RegionNativeDisplayName;
                        else 
                            return (Environment.GetResourceString("Globalization.ri_"+this.m_cultureTableRecord.SREGIONNAME));
                    }
                    else
                    { 
/* SSS_WARNINGS_OFF */                        return this.m_cultureTableRecord.SNATIVECOUNTRY; /* SSS_WARNINGS_ON */
                    } 
                } 
                else
                { 
                    // 
                    if (m_cultureTableRecord.IsSynthetic)
                        return m_cultureTableRecord.RegionNativeDisplayName;
                    else 
                        return (Environment.GetResourceString("Globalization.ri_"+this.m_cultureTableRecord.SREGIONNAME));
                } 
            } 
        }
 

        [System.Runtime.InteropServices.ComVisible(false)]
        public virtual String NativeName
        { 
            get
            { 
/* SSS_WARNINGS_OFF */                return (this.m_cultureTableRecord.SNATIVECOUNTRY); /* SSS_WARNINGS_ON */ 
            }
        } 


        public virtual String TwoLetterISORegionName
        { 
            get
            { 
                return (this.m_cultureTableRecord.SISO3166CTRYNAME); 
            }
        } 


        public virtual String ThreeLetterISORegionName
        { 
            get
            { 
                return (this.m_cultureTableRecord.SISO3166CTRYNAME2); 
            }
        } 


        public virtual bool IsMetric {
            get { 
                int value = this.m_cultureTableRecord.IMEASURE;
                return (value==0); 
            } 
        }
 

        [System.Runtime.InteropServices.ComVisible(false)]
        public virtual int GeoId
        { 
            get
            { 
                return (this.m_cultureTableRecord.IGEOID); 
            }
        } 


        public virtual String ThreeLetterWindowsRegionName
        { 
            get
            { 
                return (this.m_cultureTableRecord.SABBREVCTRYNAME); 
            }
        } 


        [System.Runtime.InteropServices.ComVisible(false)]
        public virtual String CurrencyEnglishName 
        {
            get 
            { 
                return (this.m_cultureTableRecord.SENGLISHCURRENCY);
            } 
        }


        [System.Runtime.InteropServices.ComVisible(false)] 
        public virtual String CurrencyNativeName
        { 
            get 
            {
                return (this.m_cultureTableRecord.SNATIVECURRENCY); 
            }
        }

        /*================================ CurrencySymbol ============================= 
        **Property: CurrencySymbol
        **Exceptions: None 
        ==============================================================================*/ 

 
        public virtual String CurrencySymbol {
            get {
                return (this.m_cultureTableRecord.SCURRENCY);
            } 
        }
 
        /*================================ ISOCurrencySymbol ========================== 
        **Property: Three characters of the international monetary symbol specified in ISO 4217.
        **Exceptions: None 
        ==============================================================================*/


        public virtual String ISOCurrencySymbol { 
            get {
                return (this.m_cultureTableRecord.SINTLSYMBOL); 
            } 
        }
 
        ////////////////////////////////////////////////////////////////////////
        //
        //  Equals
        // 
        //  Implements Object.Equals().  Returns a boolean indicating whether
        //  or not object refers to the same CultureInfo as the current instance. 
        // 
        ////////////////////////////////////////////////////////////////////////
 

        public override bool Equals(Object value)
        {
            RegionInfo that = value as RegionInfo; 
            if (that != null)
            { 
                return this.Name.Equals(that.Name); 
            }
 
            return (false);
        }

        //////////////////////////////////////////////////////////////////////// 
        //
        //  GetHashCode 
        // 
        //  Implements Object.GetHashCode().  Returns the hash code for the
        //  CultureInfo.  The hash code is guaranteed to be the same for RegionInfo 
        //  A and B where A.Equals(B) is true.
        //
        ////////////////////////////////////////////////////////////////////////
 

        public override int GetHashCode() 
        { 
            return (this.Name.GetHashCode());
        } 


        ////////////////////////////////////////////////////////////////////////
        // 
        //  ToString
        // 
        //  Implements Object.ToString().  Returns the name of the Region, 
        //  eg. "United States".
        // 
        ////////////////////////////////////////////////////////////////////////


        public override String ToString() 
        {
            return (Name); 
        } 
    }
}

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