C#WinForm父級窗體內Panel容器中嵌入子窗體

C#WinForm父級窗體內Panel容器中嵌入子窗體、程序主窗體設計例子
1 this.IsMdiContainer=true;//設置父窗體是容器
2 Son mySon=new Son();//實例化子窗體
3 mySon.MdiParent=this;//設置窗體的父子關係
4 mySon.Parent=pnl1;//設置子窗體的容器爲父窗體中的Panel
5 mySon.Show();//顯示子窗體，此句很重要，否則子窗體不會顯示

  lock (this)
            {
                try
                {
                    if (this.currentForm != null && this.currentForm == frm)
                    {
                        return;
                    }
                    else if (this.currentForm != null)
                    {
                        if (this.ActiveMdiChild != null)
                        {
                            this.ActiveMdiChild.Hide();
                        }
                    }
                    this.currentForm = frm;
                    frm.TopLevel = false;
                    frm.MdiParent = this;
                    panel.Controls.Clear();
                    panel.Controls.Add(frm);
                    frm.Show();
                    frm.Dock = System.Windows.Forms.DockStyle.Fill;
                    this.Refresh();
                    foreach (Control item in frm.Controls)
                    {
                        item.Focus();
                        break;
                    }
                }
                catch (System.Exception ex)
                {
                    //
                }
            }