Sintassi dichiarativa per il controllo server Web Login
Aggiornamento: novembre 2007
Fornisce gli elementi dell'interfaccia utente per eseguire l'accesso a un sito Web.
<asp:Login
AccessKey="string"
BackColor="color name|#dddddd"
BorderColor="color name|#dddddd"
BorderPadding="integer"
BorderStyle="NotSet|None|Dotted|Dashed|Solid|Double|Groove|Ridge|
Inset|Outset"
BorderWidth="size"
CreateUserIconUrl="uri"
CreateUserText="string"
CreateUserUrl="uri"
CssClass="string"
DestinationPageUrl="uri"
DisplayRememberMe="True|False"
Enabled="True|False"
EnableTheming="True|False"
EnableViewState="True|False"
FailureAction="Refresh|RedirectToLoginPage"
FailureText="string"
Font-Bold="True|False"
Font-Italic="True|False"
Font-Names="string"
Font-Overline="True|False"
Font-Size="string|Smaller|Larger|XX-Small|X-Small|Small|Medium|
Large|X-Large|XX-Large"
Font-Strikeout="True|False"
Font-Underline="True|False"
ForeColor="color name|#dddddd"
Height="size"
HelpPageIconUrl="uri"
HelpPageText="string"
HelpPageUrl="uri"
ID="string"
InstructionText="string"
LoginButtonImageUrl="uri"
LoginButtonText="string"
LoginButtonType="Button|Image|Link"
MembershipProvider="string"
OnAuthenticate="Authenticate event handler"
OnDataBinding="DataBinding event handler"
OnDisposed="Disposed event handler"
OnInit="Init event handler"
OnLoad="Load event handler"
OnLoggedIn="LoggedIn event handler"
OnLoggingIn="LoggingIn event handler"
OnLoginError="LoginError event handler"
OnPreRender="PreRender event handler"
OnUnload="Unload event handler"
Orientation="Horizontal|Vertical"
PasswordLabelText="string"
PasswordRecoveryIconUrl="uri"
PasswordRecoveryText="string"
PasswordRecoveryUrl="uri"
PasswordRequiredErrorMessage="string"
RememberMeSet="True|False"
RememberMeText="string"
runat="server"
SkinID="string"
Style="string"
TabIndex="integer"
TextLayout="TextOnLeft|TextOnTop"
TitleText="string"
ToolTip="string"
UserName="string"
UserNameLabelText="string"
UserNameRequiredErrorMessage="string"
Visible="True|False"
VisibleWhenLoggedIn="True|False"
Width="size"
>
<CheckBoxStyle />
<FailureTextStyle />
<HyperLinkStyle />
<InstructionTextStyle />
<LabelStyle />
<LayoutTemplate>
<!-- child controls -->
</LayoutTemplate>
<LoginButtonStyle />
<TextBoxStyle />
<TitleTextStyle />
<ValidatorTextStyle />
</asp:Login>
Note
Il controllo Login è un controllo composito che fornisce tutti gli elementi comuni dell'interfaccia utente necessari per autenticare un utente su un sito Web. Per ulteriori informazioni sull'utilizzo del controllo Login e di altri controlli di accesso, vedere Cenni preliminari sui controlli di accesso di ASP.NET.
Esempio
Nell'esempio di codice riportato di seguito viene illustrato come utilizzare un controllo Login per fornire un'interfaccia utente per l'accesso a un sito Web.
<%@ 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 e-mail 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)
If Not IsValidEmail(Login1.UserName) Then
Login1.InstructionText = "Enter a valid e-mail address."
Login1.InstructionTextStyle.ForeColor = System.Drawing.Color.RosyBrown
e.Cancel = True
Else
Login1.InstructionText = String.Empty
End If
End Sub
Sub OnLoginError(ByVal sender As Object, ByVal e As EventArgs)
Login1.HelpPageText = "Help with logging in..."
Login1.PasswordRecoveryText = "Forgot your password?"
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:Login id="Login1" runat="server"
BorderStyle="Solid"
BackColor="#F7F7DE"
BorderWidth="1px"
BorderColor="#CCCC99"
Font-Size="10pt"
Font-Names="Verdana"
CreateUserText="Create a new user..."
CreateUserUrl="newUser.aspx"
HelpPageUrl="help.aspx"
PasswordRecoveryUrl="getPass.aspx"
UserNameLabelText="E-mail address:"
OnLoggingIn="OnLoggingIn"
OnLoginError="OnLoginError" >
<TitleTextStyle Font-Bold="True"
ForeColor="#FFFFFF"
BackColor="#6B696B">
</TitleTextStyle>
</asp:Login>
</form>
</body>
</html>
<%@ 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 e-mail 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)
{
if (!IsValidEmail(Login1.UserName))
{
Login1.InstructionText = "Enter a valid e-mail address.";
Login1.InstructionTextStyle.ForeColor = System.Drawing.Color.RosyBrown;
e.Cancel = true;
}
else
{
Login1.InstructionText = String.Empty;
}
}
void OnLoginError(object sender, EventArgs e)
{
Login1.HelpPageText = "Help with logging in...";
Login1.PasswordRecoveryText = "Forgot your password?";
}
</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:Login id="Login1" runat="server"
BorderStyle="Solid"
BackColor="#F7F7DE"
BorderWidth="1px"
BorderColor="#CCCC99"
Font-Size="10pt"
Font-Names="Verdana"
CreateUserText="Create a new user..."
CreateUserUrl="newUser.aspx"
HelpPageUrl="help.aspx"
PasswordRecoveryUrl="getPass.aspx"
UserNameLabelText="E-mail address:"
OnLoggingIn="OnLoggingIn"
OnLoginError="OnLoginError" >
<TitleTextStyle Font-Bold="True"
ForeColor="#FFFFFF"
BackColor="#6B696B">
</TitleTextStyle>
</asp:Login>
</form>
</body>
</html>