System.Windows.Forms.MenuStrip.CountMdiMenuItems C# (CSharp) Méthode

		private int CountMdiMenuItems ()
		{
			int count = 0;
			
			foreach (ToolStripItem tsi in this.mdi_window_list_item.DropDownItems)
				if (tsi is ToolStripMenuItem && (tsi as ToolStripMenuItem).IsMdiWindowListEntry)
					count++;
					
			return count;
		}