Winforms核心.NET 5.向ContextMenuStrip添加子菜单

// 创建一个ContextMenuStrip控件
ContextMenuStrip contextMenuStrip1 = new ContextMenuStrip();

// 创建子菜单项
ToolStripMenuItem subMenuItem1 = new ToolStripMenuItem("子菜单项1");
ToolStripMenuItem subMenuItem2 = new ToolStripMenuItem("子菜单项2");

// 将子菜单项添加到ContextMenuStrip控件的Items集合中
contextMenuStrip1.Items.Add(subMenuItem1);
contextMenuStrip1.Items.Add(subMenuItem2);

// 设置子菜单项的点击事件处理程序
subMenuItem1.Click += SubMenuItem1_Click;
subMenuItem2.Click += SubMenuItem2_Click;

// 将ContextMenuStrip控件与窗体上的某个控件关联
someControl.ContextMenuStrip = contextMenuStrip1;

// 子菜单项的点击事件处理程序
private void SubMenuItem1_Click(object sender, EventArgs e)
{
    // 处理子菜单项1的点击事件
}

private void SubMenuItem2_Click(object sender, EventArgs e)
{
    // 处理子菜单项2的点击事件
}