System.Windows.Forms.MenuStrip.RefreshMdiItems C# (CSharp) Method

		internal void RefreshMdiItems ()
		{
			if (this.mdi_window_list_item == null)
				return;
			
			Form parent_form = this.FindForm ();
			
			if (parent_form == null || parent_form.MainMenuStrip != this)
				return;
				
			MdiClient mdi = parent_form.MdiContainer;
			
			// If there isn't a MdiContainer, we don't need to worry about MdiItems  :)
			if (mdi == null)
				return;
				
			// Make a copy so we can delete from the real one
			ToolStripItem[] loopitems = new ToolStripItem[this.mdi_window_list_item.DropDownItems.Count];
			this.mdi_window_list_item.DropDownItems.CopyTo (loopitems, 0);

			// If the mdi child has been removed, remove our menu item
			foreach (ToolStripItem tsi in loopitems)
				if (tsi is ToolStripMenuItem && (tsi as ToolStripMenuItem).IsMdiWindowListEntry)
					if (!mdi.mdi_child_list.Contains ((tsi as ToolStripMenuItem).MdiClientForm) || !(tsi as ToolStripMenuItem).MdiClientForm.Visible)
						this.mdi_window_list_item.DropDownItems.Remove (tsi);

			// Add the new forms and update state
			for (int i = 0; i < mdi.mdi_child_list.Count; i++) {
				Form mdichild = (Form)mdi.mdi_child_list[i];
				ToolStripMenuItem tsi;
				
				if (!mdichild.Visible)
					continue;
					
				if ((tsi = FindMdiMenuItemOfForm (mdichild)) == null) {
					if (CountMdiMenuItems () == 0 && this.mdi_window_list_item.DropDownItems.Count > 0 && !(this.mdi_window_list_item.DropDownItems[this.mdi_window_list_item.DropDownItems.Count - 1] is ToolStripSeparator))
						this.mdi_window_list_item.DropDownItems.Add (new ToolStripSeparator ());
						
					tsi = new ToolStripMenuItem ();
					tsi.MdiClientForm = mdichild;
					this.mdi_window_list_item.DropDownItems.Add (tsi);
				}
				
				tsi.Text = string.Format ("&{0} {1}", i + 1, mdichild.Text);
				tsi.Checked = parent_form.ActiveMdiChild == mdichild;
			}
			
			// Check that everything is in the correct order
			if (NeedToReorderMdi ())
				ReorderMdiMenu ();
		}