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Login Konstruktor

Definition

Namnområde:
System.Web.UI.WebControls
Sammansättning:
System.Web.dll

Skapar en ny instans av Login kontrollen.

public:
 Login();
public Login();
Public Sub New ()

Exempel

I följande kodexempel används Login konstruktorn för att skapa en ny instans av Login kontrollen och lägga till den instansen i Controls en kontrollsamling PlaceHolder .

<%@ 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>

Kommentarer

Konstruktorn Login skapar en ny instans av Login kontrollen som kan infogas programmatiskt på en webbsida.

I följande tabell visas de inledande egenskapsvärdena för en ny instans av Login.

Fastighet Initialt värde
RememberMeSet true
VisibleWhenLoggedIn true
FailureAction true
FailureText "Inloggningsförsöket misslyckades. Försök igen.”
MembershipProvider "Standard"
Orientation Vertical
PasswordLabelText "Lösenord:"
PasswordRequiredErrorMessage "Lösenord".
RememberMeSet false
RememberMeText "Kom ihåg mig nästa gång."
LoginButtonText "Logga in"
TextLayout TextOnLeft
TitleText "Logga in"
UserNameLabelText "Användarnamn:"
UserNameRequiredErrorMessage "Användarnamn".

Gäller för

Se även