LoyaltyClientGetUsernameForCard Method

public ResultOfstring GetUsernameForCard(
	ManagementGroupRequestOfstring request
)

using (var svc = new LoyaltyService.LoyaltyClient())
{
  var request = new LoyaltyService.ManagementGroupRequestOfstring();
  request.Token = "Token";//Required - Token returned from AccountService.ManagementGroupLogin
  request.ManagementGroup = "Management group";//Required - ManagementGroup supplied when calling AccountService.ManagementGroupLogin
  request.Value = "21000005"; //Required - card number

  LoyaltyService.ResultOfstring result = svc.GetUsernameForCard(request);

  if (result.FaultCode == 0)
  {
    //Request succeeded
  }
  else
  {
    //Request failed
    throw new Exception(result.FaultDescription);
  }
}