Login 建構函式
定義
重要
部分資訊涉及發行前產品,在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊,不做任何明確或隱含的瑕疵擔保。
建立 Login 控制項的新執行個體。
public:
Login();
public Login ();
Public Sub New ()
範例
下列程式代碼範例會使用 建 Login 構函式來建立 控件的新實例 Login ,並將該實例新增至 Controls 控件的 PlaceHolder 集合。
<%@ Page Language="C#" %>
<%@ Import Namespace="System.ComponentModel" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
bool IsValidEmail(string strIn)
{
// Return true if strIn is in valid email format.
return Regex.IsMatch(strIn, @"^([\w-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([\w-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$");
}
void OnLoggingIn(object sender, System.Web.UI.WebControls.LoginCancelEventArgs e)
{
Login loginControl = (Login)PlaceHolder1.FindControl("loginControl");
if (!IsValidEmail(loginControl.UserName))
{
loginControl.InstructionText = "You must enter a valid email address.";
e.Cancel = true;
}
else
{
loginControl.InstructionText = String.Empty;
}
}
void Page_Load(object sender, EventArgs e)
{
Login loginControl = new Login();
loginControl.ID = "loginControl";
loginControl.HelpPageText = "Help logging in...";
loginControl.HelpPageUrl = "help.aspx";
loginControl.PasswordRecoveryText = "Forgot your password?";
loginControl.PasswordRecoveryUrl = "getPass.aspx";
loginControl.LoggingIn += new LoginCancelEventHandler(OnLoggingIn);
PlaceHolder1.Controls.Add(loginControl);
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>ASP.NET Example</title>
</head>
<body>
<form id="form1" runat="server">
<asp:PlaceHolder id="PlaceHolder1" runat="server"></asp:PlaceHolder>
</form>
</body>
</html>
<%@ Page Language="VB" %>
<%@ Import Namespace="System.ComponentModel" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
Function IsValidEmail(ByVal strIn As String) As Boolean
' Return true if strIn is in valid email format.
Return Regex.IsMatch(strIn, ("^([\w-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([\w-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$"))
End Function
Sub OnLoggingIn(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.LoginCancelEventArgs)
Dim loginControl As Login
loginControl = CType(PlaceHolder1.FindControl("loginControl"), Login)
If Not IsValidEmail(loginControl.UserName) Then
loginControl.InstructionText = "You must enter a valid email address."
e.Cancel = True
Else
loginControl.InstructionText = String.Empty
End If
End Sub
Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
Dim loginControl As New Login
loginControl.ID = "loginControl"
loginControl.HelpPageText = "Help loggin in..."
loginControl.HelpPageUrl = "help.aspx"
loginControl.PasswordRecoveryText = "Forgot your password?"
loginControl.PasswordRecoveryUrl = "getPass.aspx"
AddHandler loginControl.LoggingIn, AddressOf OnLoggingIn
PlaceHolder1.Controls.Add(loginControl)
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>ASP.NET Example</title>
</head>
<body>
<form id="form1" runat="server">
<asp:PlaceHolder id="PlaceHolder1" runat="server"></asp:PlaceHolder>
</form>
</body>
</html>
備註
建 Login 構函式會建立控件的新實例 Login ,以程序設計方式插入網頁。
下表顯示 新實例 Login的初始屬性值。
屬性 | 初始值 |
---|---|
RememberMeSet | true |
VisibleWhenLoggedIn | true |
FailureAction | true |
FailureText | 「您的登入嘗試失敗。 請再試一次」。 |
MembershipProvider | “預設值” |
Orientation | Vertical |
PasswordLabelText | “密碼:” |
PasswordRequiredErrorMessage | “Password”。” |
RememberMeSet | false |
RememberMeText | 「下次記得我。」 |
LoginButtonText | "Login" |
TextLayout | TextOnLeft |
TitleText | "Login" |
UserNameLabelText | “使用者名稱:” |
UserNameRequiredErrorMessage | 「用戶名稱」。 |