KeyValueByDoubleComparer.cs

using System.Collections.Generic;
 
namespace be.gaudry.model.comparators
{
    /// <summary>
    /// Provides a Comparer to sort collections of KeyValuePair<string,double> by value
    /// </summary>
    public class KeyValueByDoubleComparer : System.Collections.Generic.IComparer<KeyValuePair<string,double>>
    {
 
        #region IComparer<KeyValuePair<string,double>> Membres
 
        int IComparer<KeyValuePair<string, double>>.Compare(KeyValuePair<string, double> x, KeyValuePair<string, double> y)
        {
            KeyValuePair<string, double> p1 = (KeyValuePair<string, double>)x;
            KeyValuePair<string, double> p2 = (KeyValuePair<string, double>)y;
 
            // pointers to a unique object -> no sort
            if (p1.Equals(p2)) return 0;
 
            // values equals
            if(p1.Value == p2.Value)
            {
                //compare by key
                return p1.Key.ToUpper().CompareTo(p2.Key.ToUpper());
            }
            else return (p1.Value > p2.Value)?1:-1;
        }
 
        #endregion
    }
}