SortCompare.cs :  » Network-Clients » iReaper » IReaper » C# / CSharp Open Source

using System;
using System.Collections.Generic;
using System.Text;
using System.ComponentModel;

namespace IReaper{
    public class SortCompare<T> : IComparer<T>
    {
        PropertyDescriptor m_property = null;
        ListSortDirection m_direction = ListSortDirection.Ascending;

        /// <summary>
        /// Course
        /// </summary>
        /// <param name="propDesc"></param>
        /// <param name="direction"></param>
        public SortCompare(PropertyDescriptor propDesc, ListSortDirection direction)
        {
            this.m_property = propDesc;
            this.m_direction = direction;
        }


        #region IComparer<T> 

        int IComparer<T>.Compare(T x, T y)
        {
            object xValue = this.m_property.GetValue(x);
            object yValue = this.m_property.GetValue(y);
            int retValue = 0;
            if (xValue is IComparable) // Can ask the x value
            {
                retValue = ((IComparable)xValue).CompareTo(yValue);
            }
            else if (yValue is IComparable) //Can ask the y value
            {
                retValue = ((IComparable)yValue).CompareTo(xValue);
            }
            // not comparable, compare String representations
            else if (!xValue.Equals(yValue))
            {
                retValue = xValue.ToString().CompareTo(yValue.ToString());
            }
            if (this.m_direction == ListSortDirection.Ascending)
            {
                return retValue;
            }
            else
            {
                return retValue * -1;
            }
        }

        #endregion
    }
}