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´╗┐using System; using System.Collections; using System.Collections.Generic; using System.ComponentModel; using System.Reflection; namespace chc.servicemanagertray { public class PropertyComparer<T> : IComparer<T> { private readonly IComparer comparer; private PropertyDescriptor propertyDescriptor; private int reverse; public PropertyComparer(PropertyDescriptor property, ListSortDirection direction) { this.propertyDescriptor = property; Type comparerForPropertyType = typeof(Comparer<>).MakeGenericType(property.PropertyType); this.comparer = (IComparer)comparerForPropertyType.InvokeMember("Default", BindingFlags.Static | BindingFlags.GetProperty | BindingFlags.Public, null, null, null); this.SetListSortDirection(direction); } #region IComparer<T> Members public int Compare(T x, T y) { return this.reverse * this.comparer.Compare(this.propertyDescriptor.GetValue(x), this.propertyDescriptor.GetValue(y)); } #endregion private void SetPropertyDescriptor(PropertyDescriptor descriptor) { this.propertyDescriptor = descriptor; } private void SetListSortDirection(ListSortDirection direction) { this.reverse = direction == ListSortDirection.Ascending ? 1 : -1; } public void SetPropertyAndDirection(PropertyDescriptor descriptor, ListSortDirection direction) { this.SetPropertyDescriptor(descriptor); this.SetListSortDirection(direction); } } }