SqlMembershipProvider.GetUserNameByEmail Method
Assembly: System.Web (in system.web.dll)
public String GetUserNameByEmail ( String email )
public override function GetUserNameByEmail ( email : String ) : String
Not applicable.
Parameters
The e-mail address to search for.
Return Value
The user name associated with the specified e-mail address. If no match is found, this method returns a null reference (Nothing in Visual Basic).| Exception type | Condition |
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email exceeds 256 characters. | |
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More than one user with the same e-mail address exists in the database and RequiresUniqueEmail is true. |
This method is called by the Membership class with an e-mail address, which it uses to retrieve an associated user name from the SQL Server database specified in the ASP.NET application's configuration file (Web.config).
If more than one user in the membership database has the same e-mail address, the first user name encountered is returned. You can set the requiresUniqueEmail attribute to true in the application-configuration file to ensure that each e-mail address in the database is unique.
Leading and trailing spaces are trimmed from the email parameter value.
The following code example retrieves the user name for a specified e-mail address.
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This example uses the Membership class to call the SqlMembershipProvider specified as the defaultProvider in the Web.config file. If you need to access the default provider as the type SqlMembershipProvider, you can cast the Provider property of the Membership class. To access other configured providers as a specific provider type, you can access them by their configured name with the Providers property of the Membership class and cast them as the specific provider type. |
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