C#winform程序嵌入式窗体的打开

  #region 关闭前面的窗体打开新窗体
        //关闭前面的窗体
        private void ClosePreForm()
        {
            //首先判断当前容器中是否存在窗体
            foreach (Control item in this.spContainer.Panel2.Controls)
            {
                if (item is Form)
                {
                    Form objControl = (Form)item;
                    objControl.Close();
                }
            }
        }

        //打开窗体
        private void OpenForm(Form objFrm)
        {
            objFrm.TopLevel = false;//将子窗体设置为顶级控件
            objFrm.WindowState = FormWindowState.Maximized;//让子窗体最大化
            objFrm.FormBorderStyle = FormBorderStyle.None;//去掉窗体的边框
            objFrm.Parent = this.spContainer.Panel2;//定义子窗体显示的容器
            objFrm.Show();
        }
        #endregion

调用的话

  private void btnAddStudent_Click(object sender, EventArgs e)
        {
            ClosePreForm();
            OpenForm(new FrmAddStudent());
        }