DirectoryEntry.Username Property

You can set the Username and Password in order to specify alternate credentials with which to access the information in Active Directory Domain Services. Any other DirectoryEntry objects retrieved from this instance (for example, through Children) are automatically created with the same alternate credentials.

The following example demonstrates the Username and Password properties of the DirectoryEntry class. This example gets the user-specified DirectoryEntry and the Path of all its Children.

String myADSPath = "LDAP://onecity/CN=Users,DC=onecity,DC=corp,DC=fabrikam,DC=com";
 
// Create an Instance of DirectoryEntry.
DirectoryEntry myDirectoryEntry = new DirectoryEntry(myADSPath);
myDirectoryEntry.Username = UserName;
myDirectoryEntry.Password = SecurelyStoredPassword;

// Get the Child ADS objects.
Console.WriteLine("The Child ADS objects are:");
foreach(DirectoryEntry myChildDirectoryEntry in myDirectoryEntry.Children)
   Console.WriteLine(myChildDirectoryEntry.Path);

.NET Framework

.NET Framework Client Profile

Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

Reference