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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)

public abstract string GetUserNameByEmail(
	string email
)

Parameters

email
Type: System.String

The e-mail address to search for.

Return Value

Type: System.String
The 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.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4
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