MembershipUserCollection.Item[String] 属性
定义
获取集合中由指定用户名引用的成员资格用户。Gets the membership user in the collection referenced by the specified user name.
public:
property System::Web::Security::MembershipUser ^ default[System::String ^] { System::Web::Security::MembershipUser ^ get(System::String ^ name); };
public System.Web.Security.MembershipUser this[string name] { get; }
member this.Item(string) : System.Web.Security.MembershipUser
Default Public ReadOnly Property Item(name As String) As MembershipUser
参数
- name
- String
要从集合中检索的 MembershipUser 的 UserName。The UserName of the MembershipUser to retrieve from the collection.
属性值
一个 MembershipUser 对象,它表示由 name 指定的用户。A MembershipUser object representing the user specified by name.
示例
下面的代码示例显示了中的所有成员身份用户名 ListBox ,并显示了所选用户名的特定成员身份信息。The following code example displays all membership user names in a ListBox and shows specific membership information for the selected user name.
<%@ Page Language="C#" %>
<%@ Import Namespace="System.Web.Security" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
MembershipUserCollection users;
public void Page_Load()
{
users = Membership.GetAllUsers();
if (!IsPostBack)
{
// Bind users to ListBox.
UsersListBox.DataSource = users;
UsersListBox.DataBind();
}
// If a user is selected, show the properties for the selected user.
if (UsersListBox.SelectedItem != null)
{
MembershipUser u = users[UsersListBox.SelectedItem.Value];
EmailLabel.Text = u.Email;
IsOnlineLabel.Text = u.IsOnline.ToString();
LastLoginDateLabel.Text = u.LastLoginDate.ToString();
CreationDateLabel.Text = u.CreationDate.ToString();
LastActivityDateLabel.Text = u.LastActivityDate.ToString();
}
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>Sample: View User Information</title>
</head>
<body>
<form runat="server" id="PageForm">
<h3>View User Information</h3>
<table border="0" cellspacing="4">
<tr>
<td valign="top">
<asp:ListBox id="UsersListBox" DataTextField="Username"
Rows="8" AutoPostBack="true" runat="server" />
</td>
<td valign="top">
<table border="0" cellpadding="2" cellspacing="0">
<tr>
<td>Email:</td>
<td><asp:Label runat="server" id="EmailLabel" /></td>
</tr>
<tr>
<td>Is Online?:</td>
<td><asp:Label runat="server" id="IsOnlineLabel" /></td>
</tr>
<tr>
<td>LastLoginDate:</td>
<td><asp:Label runat="server" id="LastLoginDateLabel" /></td>
</tr>
<tr>
<td>CreationDate:</td>
<td><asp:Label runat="server" id="CreationDateLabel" /></td>
</tr>
<tr>
<td>LastActivityDate:</td>
<td><asp:Label runat="server" id="LastActivityDateLabel" /></td>
</tr>
</table>
</td>
</tr>
</table>
</form>
</body>
</html>
<%@ Page Language="VB" %>
<%@ Import Namespace="System.Web.Security" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
Dim users As MembershipUserCollection
Public Sub Page_Load()
users = Membership.GetAllUsers()
If Not IsPostBack Then
' Bind users to ListBox.
UsersListBox.DataSource = users
UsersListBox.DataBind()
End If
' If a user is selected, show the properties for the selected user.
If Not UsersListBox.SelectedItem Is Nothing Then
Dim u As MembershipUser = users(UsersListBox.SelectedItem.Value)
EmailLabel.Text = u.Email
IsOnlineLabel.Text = u.IsOnline.ToString()
LastLoginDateLabel.Text = u.LastLoginDate.ToString()
CreationDateLabel.Text = u.CreationDate.ToString()
LastActivityDateLabel.Text = u.LastActivityDate.ToString()
End If
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>Sample: View User Information</title>
</head>
<body>
<form runat="server" id="PageForm">
<h3>View User Information</h3>
<table border="0" cellspacing="4">
<tr>
<td valign="top">
<asp:ListBox id="UsersListBox" DataTextField="Username"
Rows="8" AutoPostBack="true" runat="server" />
</td>
<td valign="top">
<table border="0" cellpadding="2" cellspacing="0">
<tr>
<td>Email:</td>
<td><asp:Label runat="server" id="EmailLabel" /></td>
</tr>
<tr>
<td>Is Online?:</td>
<td><asp:Label runat="server" id="IsOnlineLabel" /></td>
</tr>
<tr>
<td>LastLoginDate:</td>
<td><asp:Label runat="server" id="LastLoginDateLabel" /></td>
</tr>
<tr>
<td>CreationDate:</td>
<td><asp:Label runat="server" id="CreationDateLabel" /></td>
</tr>
<tr>
<td>LastActivityDate:</td>
<td><asp:Label runat="server" id="LastActivityDateLabel" /></td>
</tr>
</table>
</td>
</tr>
</table>
</form>
</body>
</html>
注解
MembershipUser由属性返回的对象 Item[] 包含成员资格数据存储区中用户信息的快照。The MembershipUser object returned by Item[] property contains a snapshot of user information in the membership data store. 也就是说,中成员资格用户信息的更改 MembershipUserCollection 不会反映在成员资格数据存储中。That is, changes to the membership user information in the MembershipUserCollection are not reflected in the membership data store. 若要修改成员资格数据存储中的成员资格用户信息,请使用 UpdateUser 、 CreateUser 和 DeleteUser 方法。To modify membership user information in the membership data store, use the UpdateUser, CreateUser, and DeleteUser methods.