FormsAuthenticationTicket.UserData 属性

参考

定义

命名空间:: System.Web.Security

程序集:: System.Web.dll

重要

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获取一个存储在票证中的用户特定的字符串。

public:
 property System::String ^ UserData { System::String ^ get(); };

public string UserData { get; }

member this.UserData : string

Public ReadOnly Property UserData As String

属性值

String

一个存储在票证中的用户特定的字符串。默认值为空字符串("")。

示例

下面的代码示例显示当前登录用户的属性值 FormsAuthenticationTicket 。

注意

如果没有登录的用户，则 Identity 属性将为 null ，并且尝试将 Identity 属性强制转换为 FormsIdentity 对象时将收到编译器异常。

<%@ Page Language="C#" AutoEventWireup="true"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">

    private void Page_Load(Object Src, EventArgs e)
    {
        Welcome.InnerHtml = "Hello, " +
            Server.HtmlEncode(User.Identity.Name);
    
       FormsIdentity id = (FormsIdentity)User.Identity;
       FormsAuthenticationTicket ticket = id.Ticket;
       
       cookiePath.Text = ticket.CookiePath;
       expireDate.Text = ticket.Expiration.ToString();
       expired.Text = ticket.Expired.ToString();
       isPersistent.Text = ticket.IsPersistent.ToString();
       issueDate.Text = ticket.IssueDate.ToString();
       name.Text = ticket.Name;
       userData.Text = ticket.UserData;
       version.Text = ticket.Version.ToString();
    
    
    }
    private void Signout_Click(Object sender, EventArgs e)
    {
        FormsAuthentication.SignOut();
        Response.Write("Logged out - cookie deleted.");
    }

</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
    <title>Forms Authentication</title>
</head>
<body>
    <h3>Forms Authentication Example</h3>
    <span id="Welcome" runat="server"> </span>
    <form id="form1" runat="server">
        <input type="submit" value="Signout" runat="server" onserverclick="Signout_Click" />
        <h3>Forms Authentication Ticket Properties</h3> 
            <table>
                <tbody>
                    <tr>
                        <td>
                            CookiePath: 
                        </td>
                        <td><asp:Label id="cookiePath" runat="server" />
                        </td>
                    </tr>
                    <tr>
                        <td>
                            Expiration: 
                        </td>
                        <td><asp:Label id="expireDate" runat="server" />
                        </td>
                    </tr>
                    <tr>
                        <td>
                            Expired: 
                        </td>
                        <td><asp:Label id="expired" runat="server" />
                        </td>
                    </tr>
                    <tr>
                        <td>
                            IsPersistent: 
                        </td>
                        <td><asp:Label id="isPersistent" runat="server" />
                        </td>
                    </tr>
                    <tr>
                        <td>
                            IssueDate: 
                        </td>
                        <td><asp:Label id="issueDate" runat="server" />
                        </td>
                    </tr>
                    <tr>
                        <td>
                            Name: 
                        </td>
                        <td><asp:Label id="name" runat="server" />
                        </td>
                    </tr>
                    <tr>
                        <td>
                            UserData: 
                        </td>
                        <td><asp:Label id="userData" runat="server" />
                        </td>
                    </tr>
                    <tr>
                        <td>
                            Version: 
                        </td>
                        <td><asp:Label id="version" runat="server" />
                        </td>
                    </tr>
                </tbody>
            </table>
            <p>
            </p>
    </form>
</body>
</html>

<%@ Page Language="VB" AutoEventWireup="true"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">

    Sub Page_Load(sender As Object, e As EventArgs)
        Welcome.InnerHtml = "Hello, " + _
            Server.HtmlEncode(User.Identity.Name)
    
       Dim id As FormsIdentity = CType(User.Identity, FormsIdentity) 
       Dim ticket As FormsAuthenticationTicket = id.Ticket 

       cookiePath.Text = ticket.CookiePath
       expireDate.Text = ticket.Expiration.ToString()
       expired.Text = ticket.Expired.ToString()
       isPersistent.Text = ticket.IsPersistent.ToString()
       issueDate.Text = ticket.IssueDate.ToString()
       name.Text = ticket.Name
       userData.Text = ticket.UserData
       version.Text = ticket.Version.ToString()
    End Sub

    Sub Signout_Click(sender As Object, e As EventArgs)
        FormsAuthentication.SignOut()
        Response.Write("Logged out - cookie deleted.")
    End Sub

</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
    <title>Forms Authentication</title>
</head>
<body>
    <h3>Forms Authentication Example</h3>
    <span id="Welcome" runat="server"> </span>
    <form id="form1" runat="server">
        <input type="submit" value="Signout" runat="server" onserverclick="Signout_Click" />
        <h3>Forms Authentication Ticket Properties</h3> 
            <table>
                <tbody>
                    <tr>
                        <td>
                            CookiePath: 
                        </td>
                        <td><asp:Label id="cookiePath" runat="server" />
                        </td>
                    </tr>
                    <tr>
                        <td>
                            Expiration: 
                        </td>
                        <td><asp:Label id="expireDate" runat="server" />
                        </td>
                    </tr>
                    <tr>
                        <td>
                            Expired: 
                        </td>
                        <td><asp:Label id="expired" runat="server" />
                        </td>
                    </tr>
                    <tr>
                        <td>
                            IsPersistent: 
                        </td>
                        <td><asp:Label id="isPersistent" runat="server" />
                        </td>
                    </tr>
                    <tr>
                        <td>
                            IssueDate: 
                        </td>
                        <td><asp:Label id="issueDate" runat="server" />
                        </td>
                    </tr>
                    <tr>
                        <td>
                            Name: 
                        </td>
                        <td><asp:Label id="name" runat="server" />
                        </td>
                    </tr>
                    <tr>
                        <td>
                            UserData: 
                        </td>
                        <td><asp:Label id="userData" runat="server" />
                        </td>
                    </tr>
                    <tr>
                        <td>
                            Version: 
                        </td>
                        <td><asp:Label id="version" runat="server" />
                        </td>
                    </tr>
                </tbody>
            </table>
            <p>
            </p>
    </form>
</body>
</html>

注解

FormsAuthenticationTicket如果使用不提供userData参数的构造函数创建，则 UserData 属性将返回空字符串 (“”) ;否则，版本属性返回提供给FormsAuthenticationTicket构造函数的值。

可以使用 UserData 属性来存储其他用户信息， FormsAuthenticationTicket 以及不由属性值维护的 FormsAuthenticationTicket 。

注意

应限制属性中 UserData 存储的数据量。必须确保属性的大小 UserData 不会导致无效 Cookie 或 URL 过长。

适用于

另请参阅

Forms 身份验证提供程序

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FormsAuthenticationTicket.UserData 属性

定义

属性值

示例

注解

适用于

另请参阅

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