///<summary>Collect all checked items from a <see cref="System.Windows.Forms.ToolStripItemCollection"/>
///and into a <see cref="System.Windows.Forms.ToolStripMenuItem"/> array.</summary>
///<param name="items"><see cref="System.Windows.Forms.ToolStripItemCollection"/></param>
///<returns><see cref="System.Array"/> of <see cref="System.Windows.Forms.ToolStripMenuItem"/></returns>
private static ToolStripItem[] Choices(ToolStripItemCollection items)
{
var choices = new ToolStripItem[items.Count];
items.CopyTo(choices, 0);
return(Array.FindAll(choices, item => item is ToolStripMenuItem && ((ToolStripMenuItem)item).Checked));
}
/// <summary>
/// Sorts the ToolStripItemCollection using the specified comparer.
/// </summary>
/// <param name="collection">The collection of ToolStripItems.</param>
/// <param name="comparer">The comparer to use for sorting the ToolStripItems.</param>
/// <exception cref="ArgumentNullException">
/// <paramref name="collection"/> is null.
/// or
/// <paramref name="comparer"/> is null.
/// </exception>
public static void Sort(this ToolStripItemCollection collection, IComparer <ToolStripItem> comparer)
{
if (collection == null)
{
throw new ArgumentNullException(nameof(collection));
}
if (comparer == null)
{
throw new ArgumentNullException(nameof(comparer));
}
// If a ToolStripItemCollection only contains one item it does not need to be sorted.
if (collection.Count > 1)
{
ToolStripItem[] items = new ToolStripItem[collection.Count];
collection.CopyTo(items, 0);
Array.Sort(items, comparer);
collection.Clear();
collection.AddRange(items);
}
}
public void CopyTo(Array array, int index)
{
collection.CopyTo(array, index);
}