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Membership.ValidateUser Method

Verifies that the supplied user name and password are valid.

Namespace:  System.Web.Security
Assembly:  System.Web (in System.Web.dll)

public static function ValidateUser(
	username : String, 
	password : String
) : boolean

Parameters

username
Type: System.String

The name of the user to be validated.

password
Type: System.String

The password for the specified user.

Return Value

Type: System.Boolean
true if the supplied user name and password are valid; otherwise, false.

ValidateUser provides an easy way to verify a user name and password from the data source. Note that, if the username parameter is empty or a null reference (Nothing in Visual Basic), an HttpException is thrown.

The following code example shows the login page for an ASP.NET application configured to use forms authentication and the Membership class. If the supplied user credentials are invalid, a message is displayed to the user. Otherwise, the user is redirected to the originally requested URL by the RedirectFromLoginPage method.

Security noteSecurity Note:

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.

No code example is currently available or this language may not be supported.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0

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