Number in the format of prefix In c#

Introduction:

One of my requirement required prefix for Number. We need to display the Quantities as the prefix format .ie if the value is 20000 then it will be display like 200k if the value is 2040000 then it will be display like 2.04M (Based on the decimal selection).

I have implemented a fully generalized solution for this item. It will be applicable for all areas.

Please find the following code snippet:

In the following code contain two classes, one for maintaining the prefix format and another static class maintain the logic for getting the proper prefix. Based on decimal passing we can change the format.

  public static class ShortPrefix

    {

        private static List<ShortPrefixInfo> _SIPrefixInfoList = new List<ShortPrefixInfo>();

        static ShortPrefix()

        {

            _SIPrefixInfoList = new List<ShortPrefixInfo>();

            LoadSIPrefix();
        }

 

      public static List<ShortPrefixInfo> SIPrefixInfoList
        {
            get
            {
                List<ShortPrefixInfo> lstSi = new List<ShortPrefixInfo>();
                ShortPrefixInfo[] siPrefixInfoList = new ShortPrefixInfo[5];
                _SIPrefixInfoList.CopyTo(siPrefixInfoList);
                for (int i = 0; i < siPrefixInfoList.Length; i++)
                {
                    lstSi.Add(siPrefixInfoList[i]);
                }

               return lstSi;

            }
        }

        private static void LoadSIPrefix()

        {
            ShortPrefixInfo SPinfo = new ShortPrefixInfo();
            SPinfo.Symbol = "Y";
            SPinfo.Prefix = "yotta";
            SPinfo.Example = 1000000000000000000000000.00M;
            SPinfo.ZeroLength = 24;
            SPinfo.ShortScaleName = "Septillion";
            SPinfo.LongScaleName = "Quadrillion";
            _SIPrefixInfoList.Add(SPinfo);

            SPinfo = new ShortPrefixInfo();
            SPinfo.Symbol = "Z";
            SPinfo.Prefix = "zetta";
            SPinfo.Example = 1000000000000000000000M;
            SPinfo.ZeroLength = 21;
            SPinfo.ShortScaleName = "Sextillion";
            SPinfo.LongScaleName = "Trilliard";
            _SIPrefixInfoList.Add(SPinfo);

            SPinfo = new ShortPrefixInfo();

            SPinfo.Symbol = "E";
             SPinfo.Prefix = "exa";
            SPinfo.Example = 1000000000000000000M;
            SPinfo.ZeroLength = 18;
            SPinfo.ShortScaleName = "Quintillion";
            SPinfo.LongScaleName = "Trillion";
            _SIPrefixInfoList.Add(SPinfo);

            SPinfo = new ShortPrefixInfo();

            SPinfo.Symbol = "P";
            SPinfo.Prefix = "peta";
            SPinfo.Example = 1000000000000000M;
            SPinfo.ZeroLength = 15;
            SPinfo.ShortScaleName = "Quadrillion";
            SPinfo.LongScaleName = "Billiard";
            _SIPrefixInfoList.Add(SPinfo);

            SPinfo = new ShortPrefixInfo();

            SPinfo.Symbol = "T";
            SPinfo.Prefix = "tera";
            SPinfo.Example = 1000000000000M;
            SPinfo.ZeroLength = 12;
            SPinfo.ShortScaleName = "Trillion";
            SPinfo.LongScaleName = "Billion";
            _SIPrefixInfoList.Add(SPinfo);

            SPinfo = new ShortPrefixInfo();

            SPinfo.Symbol = "G";
            SPinfo.Prefix = "giga";
            SPinfo.Example = 1000000000M;
            SPinfo.ZeroLength = 9;
            SPinfo.ShortScaleName = "Billion";
            SPinfo.LongScaleName = "Milliard";
            _SIPrefixInfoList.Add(SPinfo);

            SPinfo = new ShortPrefixInfo();

            SPinfo.Symbol = "M";
            SPinfo.Prefix = "mega";
            SPinfo.Example = 1000000M;
            SPinfo.ZeroLength = 6;
            SPinfo.ShortScaleName = "Million";
            SPinfo.LongScaleName = "Million";
            _SIPrefixInfoList.Add(SPinfo);

 

            SPinfo = new ShortPrefixInfo();
            SPinfo.Symbol = "K";
            SPinfo.Prefix = "kilo";
            SPinfo.Example = 1000M;
            SPinfo.ZeroLength = 3;
            SPinfo.ShortScaleName = "Thousand";
            SPinfo.LongScaleName = "Thousand";
            _SIPrefixInfoList.Add(SPinfo);

           SPinfo = new ShortPrefixInfo();

            SPinfo.Symbol = "H";
            SPinfo.Prefix = "hecto";
            SPinfo.Example = 100M;
            SPinfo.ZeroLength = 3;
            SPinfo.ShortScaleName = "Hundred";
            SPinfo.LongScaleName = "Hundred";
            _SIPrefixInfoList.Add(SPinfo);

            SPinfo = new ShortPrefixInfo();

            SPinfo.Symbol = "D";
             SPinfo.Prefix = "deca";
            SPinfo.Example = 10M;
            SPinfo.ZeroLength = 1;
            SPinfo.ShortScaleName = "Ten";
            SPinfo.LongScaleName = "Ten";
            _SIPrefixInfoList.Add(SPinfo);
 

            SPinfo = new ShortPrefixInfo();

            SPinfo.Symbol = "";
            SPinfo.Prefix = "";
            SPinfo.Example = 1M;
            SPinfo.ZeroLength = 0;
            SPinfo.ShortScaleName = "one";
            SPinfo.LongScaleName = "one";
            _SIPrefixInfoList.Add(SPinfo);

        }

        public static ShortPrefixInfo GetInfo(long amount, int decimals)

        {

            return GetInfo(Convert.ToDecimal(amount), decimals);

        }

        public static ShortPrefixInfo GetInfo(decimal amount, int decimals)

        {

           ShortPrefixInfo siPrefixInfo = null;

            decimal amountToTest = Math.Abs(amount);
            int amountLength = amountToTest.ToString("0").Length;
            if (amountLength < 3)
           {
           siPrefixInfo = _SIPrefixInfoList.Find(delegate(ShortPrefixInfo sp)

              {
               return sp.ZeroLength == amountLength; }
               ).Clone() as ShortPrefixInfo;

    siPrefixInfo.AmountWithPrefix = Math.Round(amount, decimals).ToString();

                return siPrefixInfo;
           }

    siPrefixInfo = _SIPrefixInfoList.Find(delegate(ShortPrefixInfo sp)

 {

 return amountToTest > sp.Example; }

).Clone() as ShortPrefixInfo;

 

 siPrefixInfo.AmountWithPrefix = Math.Round(amountToTest / Convert.ToDecimal(siPrefixInfo.Example), decimals).ToString() + siPrefixInfo.Symbol;

return siPrefixInfo;

        }

    }

 

    public class ShortPrefixInfo : ICloneable
    {
        private string symbol;
        private decimal example;
        private string prefix;
        private int zerolength;
        private string shortscalename;
        private string longscalename;
        private string amountwithprefix;
        public string Symbol
        {
            get
            {
                return symbol;
            }
            set
            {
                symbol = value;
            }

        }

        public decimal Example

        {

           get
            {
                return example;
            }
            set
            {
                example = value;
            }
        }

        public string Prefix {

            get { return prefix; } set { prefix = value; } }
        public int ZeroLength { get { return zerolength; } set { zerolength = value; } }

        public string ShortScaleName { get { return shortscalename; } set { shortscalename = value; } }

        public string LongScaleName { get { return longscalename; } set { longscalename = value; } }

        public string AmountWithPrefix { get { return amountwithprefix; } set { amountwithprefix = value; } }

        public object Clone()

        {

            ShortPrefixInfo SPinfo = new ShortPrefixInfo();

            SPinfo.Symbol = this.Symbol;

            SPinfo.Prefix = this.Prefix;

            SPinfo.Example = this.Example;

            SPinfo.ZeroLength = this.ZeroLength;

            SPinfo.ShortScaleName = this.ShortScaleName;

            SPinfo.LongScaleName = this.LongScaleName;

            return SPinfo;

        }

    }

 Implementation:

It is very easy to implement. Just concatenate the column heading with the following method.

cbi.DataColumn.Caption = "Act-" + (ShortPrefix.GetInfo(2000, 2)).AmountWithPrefix.ToString();

Out Put : “Act-2K”

Based on the Desimal value passing we are rounding the output.

cbi.DataColumn.Caption = "Ro2-" + (ShortPrefix.GetInfo(2040000, 2)).AmountWithPrefix.ToString()

Out Put : “Ro2-2.04M”