如果选择了任何项目,C#contextmenustrip不会显示任何指示

我找不到一种方法来获取像Windows File Explored的视图选项那样的项目符号/点,但我使用了下面的逻辑并使用选中状态来指示所做的选择。

 private void toolStripViewOptions_Click(object sender, EventArgs e)
 {
            ToolStripMenuItem selectedOption = sender as ToolStripMenuItem;

            SetIndicationForSelectedOption(selectedOption);
 }



private void SetIndicationForSelectedOption(ToolStripMenuItem selectedMenuItem)
{
            ToolStripItemCollection menuItems = (contextMenuStrip.Items[(Int32)toolStripView.Tag] as ToolStripMenuItem).DropDownItems;

            // Set checked state for only the selected view option and disable same for others.
            foreach (ToolStripMenuItem item in menuItems)
            {
                if (selectedMenuItem == item)
                    selectedMenuItem.Checked = true;
                else
                    item.Checked = false;
            }
 }