请教怎么用编程的方式控制LOGIN控件里的各个控件(转换为模板后)

请问如何用编程的方式控制LOGIN控件里的各个控件(转换为模板后)
如题,谢谢

------解决方案--------------------
请问如何用编程的方式控制LOGIN控件里的各个控件(转换为模板后)
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帐号文本框的ID必须是UserName
密码文本框的ID必须是Password

其他的必须FindControl

给个Demo
//aspx
<form id= "form1 " runat= "server ">
<asp:Login ID= "UserLogin " runat= "server " BackColor= "#FFFBD6 " BorderColor= "#FFDFAD " BorderPadding= "4 " BorderStyle= "Solid " BorderWidth= "1px " Font-Names= "Verdana " Font-Size= "0.8em " ForeColor= "#333333 " TextLayout= "TextOnTop " FailureText= "验证失败,请重新输入帐号密码 " OnLoggedIn= "UserLogin_LoggedIn " OnLoggingIn= "UserLogin_LoggingIn " OnLoginError= "UserLogin_LoginError ">
<LayoutTemplate>
<asp:Label ID= "lbUserName " runat= "server " Text= "帐号: "> </asp:Label>
<asp:TextBox ID= "UserName " runat= "server " Width= "150px "> </asp:TextBox>
<asp:RequiredFieldValidator ID= "RV1 " runat= "server " ControlToValidate= "UserName "
ErrorMessage= "帐号不可为空白 " Enabled= "False " Width= "100px " Display= "Dynamic "> 帐号不可为空白 </asp:RequiredFieldValidator> <br />
<asp:Label ID= "lbPassword " runat= "server " Text= "密码: "> </asp:Label>
<asp:TextBox ID= "Password " runat= "server " TextMode= "Password " Width= "150px "> </asp:TextBox>
<asp:RequiredFieldValidator ID= "RV2 " runat= "server " ControlToValidate= "Password "
ErrorMessage= "密码不可为空白 " Enabled= "False " Width= "100px " Display= "Dynamic "> 密码不可为空白 </asp:RequiredFieldValidator> <br />
<asp:CheckBox ID= "RememberME " runat= "server " Text= "记住我 " />
<asp:ImageButton ID= "btnLogin " runat= "server " CommandName= "Login " ImageUrl= "~/Images/Login.jpg " /> &nbsp; <asp:ImageButton
ID= "btnSignout " runat= "server " ImageUrl= "~/Images/Logout.jpg " OnClick= "btnSignout_Click " /> &nbsp;
<asp:Label ID= "txtUserName " runat= "server "> </asp:Label> <br />
<asp:Literal ID= "FailureText " runat= "server "> </asp:Literal>
</LayoutTemplate>
<LoginButtonStyle BackColor= "White " BorderColor= "#CC9966 " BorderStyle= "Solid " BorderWidth= "1px "
Font-Names= "Verdana " Font-Size= "0.8em " ForeColor= "#990000 " />
<TextBoxStyle Font-Size= "0.8em " />
<TitleTextStyle BackColor= "#990000 " Font-Bold= "True " Font-Size= "0.9em " ForeColor= "White " />
<InstructionTextStyle Font-Italic= "True " ForeColor= "Black " />
</asp:Login>
</form>

//aspx.cs
public partial class LoginTemplate : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
//在Login控制项完成验证程序,检查是否通过验证,若通过则显示用户名