'Declaration
 
<ExtensionAttribute()>
Public Shared Function IsKnown( _
   ByVal readOnlyNameAndPasswordUserManager As IReadOnlyNameAndPasswordUserManager, _
   ByVal userName As String _
) As Boolean

'Usage
 
Dim readOnlyNameAndPasswordUserManager As IReadOnlyNameAndPasswordUserManager
Dim userName As String
Dim value As Boolean
 
value = IReadOnlyNameAndPasswordUserManagerExtension.IsKnown(readOnlyNameAndPasswordUserManager, userName)

[Extension()]
public static bool IsKnown( 
   IReadOnlyNameAndPasswordUserManager readOnlyNameAndPasswordUserManager,
   string userName
)

[Extension()]
public:
static bool IsKnown( 
   IReadOnlyNameAndPasswordUserManager^ readOnlyNameAndPasswordUserManager,
   String^ userName
) 

Parameters

readOnlyNameAndPasswordUserManager

The user manager.

The value of this parameter cannot be null (Nothing in Visual Basic).

userName

The username to check.

The value of this parameter cannot be null (Nothing in Visual Basic).

Return Value

This is an extension method (info: C#, VB.NET). In languages that have support for extensions methods (such as C# and VB.NET), you can use the extension method as if it were a regular method on the object that is its first parameter. In other languages (such as with Python.NET), you will call the extension as a static method, and pass it the object on which it acts as its first parameter.

Target Platforms: .NET Framework: Windows 10 (selected versions), Windows 11 (selected versions), Windows Server 2016, Windows Server 2022; .NET: Linux, macOS, Microsoft Windows