Question

I have a list view with custom sorter (set by ListCollectionView.CustomSort property), however I would like to insert new items at the top of list view. How can I suppress CustomSort?

I have an idea to tune my sort logic, so newly added item will be the first one, however this solution stinks a little bit.

Answer 1

Why suppress CustomSort? Adapt it for your needs:

• You could give all new items an extreme value for the property used in IComparer object for sorting, e.G. int.MaxValue or string.Empty.

• Or create an additional property IsNew and include it into comparing process.

  class MyClass
  {
      public bool IsNew { get; set; }
      public string Name { get; set; }
  }
  
  class MyComparer : IComparer<MyClass>
  {
      public int Compare(MyClass x, MyClass y)
      {
          if (x.IsNew ^ y.IsNew)
          {
              return x.IsNew ? -1 : 1;
          }
          else
          {
              return StringComparer.InvariantCulture.Compare(x.Name, y.Name);
          }
      }
  }