控制的可见性状态发生变化

Question

我在实验室项目中完成了一个阶段。我最好用照片随意地描述我的问题。我目前已阅读controls visibility in C#主题，但我需要提出更多问题。我需要知道如何仅使用C＃来实现这种困境。

1. 我有在Page_Load中可见的控件。



1. 我在下拉列表中选择了一些学生姓名。标签的价值正在发生变化。



使用的代码：

protected void ddlStudents_SelectedIndexChanged(object sender, EventArgs e)
{
    lblEmail.Visible = true;
    lblName.Visible = true;
    lblReg.Visible = true;
    lblUserActive.Visible = true;
    lblTelephone.Visible = true;
    lblFamilyName.Visible = true;
    lblBirth.Visible = true;


    CatalogAccess ca=new CatalogAccess();
    UserDetails ud = ca.GetUser(23);
    //HiddenID.Value = String.Format(ud.UserID);

    lblName.Text = ud.UserName;
    lblEmail.Text = ud.UserEmail;
    lblFamilyName.Text = ud.UserFamilyName;
    lblBirth.Text=String.Format("{0:dd/MM/yyy}",ud.UserBirthDay);
    lblTelephone.Text = ud.UserTelephone;
    lblReg.Text =String.Format("{0:dd/MM/yyy  HH:MM}",ud.RegDate);
    if (ud.UserActive == true)
    {
        chbActive.Checked = true;
        lblUserActive.Text = "Yes";
    }
    else
    {
        chbActive.Checked = false;
        lblUserActive.Text = "No";
    }
    //ud.UserActive != 0 ? chbActive.Checked = false : chbActive.Checked = true;
    //lblUserActive.Text = ud.UserActive != 0 ? "Activated" : "Not Activated";
    //ddlStudents.Items.Clear();
    //PopulateStudentsDDL();

}

1. 更新

   protected void btnUpdate_Click（object sender，EventArgs e） {     lblBirth.Visible = true;     lblReg.Visible = true;     ddlPrefix.Visible = true;     btnUpdateUnderPanel.Visible = true;

   lblName.Visible = false;
   tbName.Visible = true;
   tbName.Text = lblName.Text;
   
   lblFamilyName.Visible = false;
   tbFamilyName.Visible = true;
   tbFamilyName.Text = lblFamilyName.Text;
   
   lblTelephone.Visible = false;
   tbTelephone.Visible = true;
   tbTelephone.Text = lblTelephone.Text;
   
   lblEmail.Visible = false;
   tbEmail.Visible = true;
   tbEmail.Text = lblEmail.Text;
   
   lblUserActive.Visible = false;
   chbActive.Visible = true;
   

   }

问题是：

如何以更专业的方式实施？

请告诉我，不要告诉我关于小组的事。这里不需要面板。我只改变了几个控件。