Материал из .Net Framework эксперт
The LoginName control displays the current user"s registered username.
If the current user is not authenticated, the LoginName control renders nothing.
<%@ Page Language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
<title>Show LoginName</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:LoginName
id="LoginName1"
FormatString="{0} /"
Runat="server" />
<asp:LoginStatus
id="LoginStatus1"
Runat="server" />
<hr />
Additional information is available to registered users. Log in to view
the additional information.
</div>
</form>
</body>
</html>
