string SaveQDSSettings(
	QDSSettings qdsSettings
)

Function SaveQDSSettings ( 
	qdsSettings As QDSSettings
) As String

 using System;
 using System.Collections.Generic;
 using System.Linq;
 using QMSAPI;

 class Program
 {
     static void Main(string[] args)
     {
         try
         {
             // create a QMS API client
             IQMS apiClient = new QMSClient();

             //retrieve a time limited service key
             ServiceKeyClientMessageInspector.ServiceKey = apiClient.GetTimeLimitedServiceKey();

            //Get a list of QlikView Distribution Services.
            List<ServiceInfo> qdsServices = apiClient.GetServices(ServiceTypes.QlikViewDistributionService);

            //Loop through the list
            foreach(ServiceInfo info in qdsServices)
            {
                Console.WriteLine("Updating QDS at " + info.Name);

                //Get the General settings for a QlikView Distribition Service.
                QDSSettings settings = apiClient.GetQDSSettings(info.ID, QDSSettingsScope.General);

                if(settings != null)
                {
                    //Set the LogLevel and set the updated settings.
                    settings.General.LogLevel = LogLevel.Normal;
                    string result = apiClient.SaveQDSSettings(settings);

                    if (string.IsNullOrWhiteSpace(result))
                        Console.WriteLine("Update OK.");
                    else
                        Console.WriteLine("Issues while updating: " + result);
                } else
                {
                    Console.WriteLine("Failed to retrieve the settings.");
                }
            }
         }
         catch (Exception ex)
         {
             Console.WriteLine("An exception occurred: " + ex.Message);
         }
         // wait for user to press any key
         Console.ReadLine();
     }
}