private void 员工管理ToolStripMenuItem_Click_1(object sender, EventArgs e)
{
//窗体切换
StaffMainForm w2 = new StaffMainForm(); //实例化对象
w2.TopLevel = false; //将此控件设置为非顶级
this.panel1.Controls.Add(w2); //添加w1的控件
w2.FormBorderStyle = FormBorderStyle.None; //将边框设置为无
w2.Show(); //显示w4窗体
w2.BringToFront(); //将w4置于顶层
}
