Checking if a user exists in Active Directory using C# or VB.Net
You can use the .Net Wrapper to see if a user exists in Active Directory or not.
Programming Langauges Supported
ASP.NET, C#, VB.Net, Visual Studio 2010, Visual Sutdio 2012
Parameters: (string) Username
An instance of the LDAP manager must be instantiated for a valid ADDS server.
The method is called passing the Username as a string. Three
things can then occur:
- If the username exists in Active Directory and the method returns true.
- If the username does not exist in Active Directory the
method returns false
- An Exception will be thrown for other errors
Where LdapConnection is an instance of LdapManager
public Boolean UserExists(String UserName)
It should be noted that there is no residual connection to the authenticated
User Name, this method does not result in any "Login" context.