dotnet - Get All Active Directory Users in a Group

System.DirectoryServices.AccountManagement

public static List<UserPrincipal> GetAllUsersInGroup(string domain, string groupname)
{
    List<UserPrincipal> result = new List<UserPrincipal>();

    using (var context = new PrincipalContext(ContextType.Domain, domain))
    using (var group = GroupPrincipal.FindByIdentity(context, groupname))
    {
    if (group != null)
    {
    result.AddRange(group.GetMembers(true).Cast<UserPrincipal>().ToList());
    }
    }
    return result;
}

private static string GetADStatus(int inputField)
{
    // Assume the user is disabled
    string result = "Disabled";
    // Declare the hex for the accountDisabled flag
    int accountDisabled = 0x00000002; // https://msdn.microsoft.com/en-us/library/ms680832%28v=vs.85%29.aspx
    // Do a bitwise and against the input field and the account disabled mask
    int resultArray = inputField & accountDisabled;
    // Compare the results of the bitwise and operation to see if the account disabled flag was set
    if (resultArray == accountDisabled)
    {
    result = "Disabled";
    }
    else
    {
    result = "Active";
    }
    return result;
}