void SetDSPAPISettings(
	DSPSettings dspSettings
)

Sub SetDSPAPISettings ( 
	dspSettings As DSPSettings
)

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

class Program
{
     static void Main(string[] args)
     {
         try
         {
            // create a QMS API client
            IQMS2 apiClient = new QMS2Client();

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

            //get a list of all Directory Service Connectors
            ServiceInfo[] dsConnectors = apiClient.GetServices(ServiceTypes.QlikViewDirectoryServiceConnector);

            //get DSP settings, of the type Active Directory for the first DSC in the list
            DSPSettings settings = apiClient.GetDSPAPISettings(dsConnectors[0].ID, DSPType.AD);

            if (settings != null)
            {
                 //get a dictionary of the settings for the first resource in the list
                 Dictionary<string, string> dspDictionary = settings.Resources[0].Settings.ToDictionary(x => x.Key, x => x.Value);

                 //print the current value for CacheExpiryInMinutes
                 Console.WriteLine("Cache expiry in minutes before change: " + dspDictionary["CacheExpiryInMinutes"]);

                 //change the value of CacheExpiryInMinutes
                 dspDictionary["CacheExpiryInMinutes"] = "50";

                 //set and save the new settings
                 settings.Resources[0].Settings = dspDictionary;
                 apiClient.SetDSPAPISettings(settings);
            }
         }
         catch(Exception e)
         {
             Console.WriteLine("An error occured: " + e.Message);
         }
         // wait for user to press any key
         Console.ReadLine();
     }
}