System.Windows.Forms.TabControl.Redraw C# (CSharp) Method

		internal void Redraw ()
		{
			if (!IsHandleCreated)
				return;

			ResizeTabPages ();
			Refresh ();
		}

            public override void Add(Control value)
            {
                TabPage page = value as TabPage;

                if (page == null)
                {
                    throw new ArgumentException("Cannot add " +
                                                value.GetType().Name + " to TabControl. " +
                                                "Only TabPages can be directly added to TabControls.");
                }

                page.SetVisible(false);
                base.Add(value);
                owner.m_helper.Add(page);
                if (owner.TabCount == 1 && owner.selected_index < 0)
                {
                    owner.SelectedIndex = 0;
                }
                owner.Redraw();
            }