c# winform tabcontrol控件选项卡竖直显示，上

第一步：设置Alignment=left
              设置DrowMode=OwnerDrawFixed
              设置ItemSize=30,100
              设置SizeMode=Fixed
第二部：重绘，实现tabcontrol控件的tabControl1_DrawItem事件，如下所示
 private void tabControl1_DrawItem(object sender, DrawItemEventArgs e)
        {
            string text=((TabControl)sender).TabPages[e.Index].Text;
            SolidBrush brush=new SolidBrush(Color.Black);
           StringFormat sf = new StringFormat(StringFormatFlags.DirectionRightToLeft);
           sf.LineAlignment = StringAlignment.Center;
           sf.Alignment = StringAlignment.Center;
           e.Graphics.DrawString(text, SystemInformation.MenuFont,brush, e.Bounds, sf);
        }

转自：https://blog.csdn.net/kasama1953/article/details/51546149