Gets a user name where the e-mail address for the user matches the specified e-mail address.
Assembly: System.Web (in System.Web.dll)
- Type: System::String
The e-mail address to search for.
Return ValueType: System::String
The user name where the e-mail address for the user matches the specified e-mail address. If no match is found, nullptr is returned.
can be used to retrieve the user name for a membership user in the case where a user does not know their user name, but does know their e-mail address. If more than one user in the data store has the same e-mail address, the first user name encountered is returned.
Leading and trailing spaces are trimmed from all parameter values.
The following code example retrieves the user name for a specified e-mail address.
This example contains a text box that accepts user input, which is a potential security threat. By default, ASP.NET Web pages validate that user input does not include script or HTML elements. For more information, see Script Exploits Overview.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.