MembershipProvider.GetUserNameByEmail Method
Gets the user name associated with the specified e-mail address.
Namespace: System.Web.Security
Assembly: System.Web.ApplicationServices (in System.Web.ApplicationServices.dll)
Parameters
- Type: System.String
The e-mail address to search for.
Return Value
Type: System.StringThe user name associated with the specified e-mail address. If no match is found, return null.
Takes, as input, an e-mail address and returns the first user name from the data source where the e-mail address matches the supplied email parameter value.
If no user name is found with a matching e-mail address, null is returned.
If multiple user names are found that match a particular e-mail address, only the first user name found should be returned. You can implement a custom mechanism for ensuring a unique e-mail address for each user name such as the RequiresUniqueEmail property supported by the SqlMembershipProvider provider.
For an example of a MembershipProvider implementation, see Implementing a Profile Provider.
Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
