File: System\Windows\Forms\Controls\ListView\ColumnHeader.ColumnHeaderImageListIndexer.cs
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Project: src\src\System.Windows.Forms\src\System.Windows.Forms.csproj (System.Windows.Forms)
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
namespace System.Windows.Forms;
 
public partial class ColumnHeader
{
    internal class ColumnHeaderImageListIndexer : ImageList.Indexer
    {
        private readonly ColumnHeader _owner;
 
        public ColumnHeaderImageListIndexer(ColumnHeader ch)
        {
            _owner = ch;
        }
 
        public override ImageList? ImageList
        {
            get
            {
                return _owner.ListView?.SmallImageList;
            }
            set
            {
                Debug.Assert(false, "We should never set the image list");
            }
        }
    }
}