Panel隱藏與開啟

  protected void Button1_Click(object sender, EventArgs e)
    {
        if (Panel1.Visible == false)
        {
            //如果 Panel1 目前為隱藏狀態

            Panel1.Visible = true;  //將 Panel1 設定為開啟
            Button1.Text = "關閉搜尋欄";        }
        else if (Panel1.Visible == true)
        {
            //如果 Panel1 目前為開啟狀態

            Panel1.Visible = false;  //將 Panel1 設定為隱藏
            Button1.Text = "開啟搜尋欄";
        }
    }