Index: dam engine/trunk/src/Deltares.DamEngine.Interface/EngineInterface.cs
===================================================================
diff -u -r465 -r501
--- dam engine/trunk/src/Deltares.DamEngine.Interface/EngineInterface.cs	(.../EngineInterface.cs)	(revision 465)
+++ dam engine/trunk/src/Deltares.DamEngine.Interface/EngineInterface.cs	(.../EngineInterface.cs)	(revision 501)
@@ -20,11 +20,13 @@
 // All rights reserved.
 
 using System;
+using Deltares.DamEngine.Calculators.Dikes_Design;
 using Deltares.DamEngine.Data.General;
 using Deltares.DamEngine.Data.Standard;
 using Deltares.DamEngine.Data.Standard.Logging;
 using Deltares.DamEngine.Io;
 using Deltares.DamEngine.Io.XmlInput;
+using Deltares.DamEngine.Io.XmlOutput;
 
 namespace Deltares.DamEngine.Interface
 {
@@ -152,9 +154,24 @@
         public string Run(out string outputXml)
         {
             SendMessage(new LogMessage() { MessageType = LogMessageType.Info, Message = "Start calculation" });
+
+            switch (DamProjectData.DamProjectType)
+            {
+                case DamProjectType.Assessment:
+                case DamProjectType.AssessmentRegional:
+                case DamProjectType.NWO:
+                case DamProjectType.Operational:
+                    throw new NotImplementedException();
+                case DamProjectType.Design:
+                    DesignCalculator designCalculator = new DesignCalculator();
+
+                    designCalculator.Execute(DamProjectData);
+                    break;
+            }
+            Output output = FillXmlOutputFromDam.CreateOutput(DamProjectData);
+            outputXml = DamXmlSerialization.SaveOutputAsXmlString(output);
             SendMessage(new LogMessage() { MessageType = LogMessageType.Info, Message = "End calculation" });
-            outputXml = null;
-            return null;
+            return outputXml;
         }
 
     }