Index: DamTools/LayerOnSlopeTool/trunk/src/Deltares.LayerOnSlopeTool.StiFileCreator/DGSMStabDAMInterface.cs
===================================================================
diff -u
--- DamTools/LayerOnSlopeTool/trunk/src/Deltares.LayerOnSlopeTool.StiFileCreator/DGSMStabDAMInterface.cs	(revision 0)
+++ DamTools/LayerOnSlopeTool/trunk/src/Deltares.LayerOnSlopeTool.StiFileCreator/DGSMStabDAMInterface.cs	(revision 3100)
@@ -0,0 +1,115 @@
+// Copyright (C) Stichting Deltares 2020. All rights reserved.
+//
+// This file is part of the Dam Engine.
+//
+// The Dam Engine is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
+//
+// All names, logos, and references to "Deltares" are registered trademarks of
+// Stichting Deltares and remain full property of Stichting Deltares at all times.
+// All rights reserved.
+
+using System.Runtime.InteropServices;
+using System.Text;
+
+namespace Deltares.LayerOnSlopeTool.StiFileCreator
+{
+    public class DGSMStabDAMInterface : DgsStandardDllInterface 
+    {
+
+        private const string DllFileName = @"DGSMStabDAM.dll";
+
+        [DllImport(DllFileName)]
+        static extern int GetDamLicenseType();
+        [DllImport(DllFileName)]
+        static extern int GetDamLiveLicenseType();
+        [DllImport(DllFileName)]
+        static extern int DllGetVersion(out DllVersionInfoStructure dllVersionInfoStructure);
+        [DllImport(DllFileName)]
+        static extern string GetDescription(StringBuilder errorMessage, ref int bufferSize);
+        [DllImport(DllFileName)]
+        static extern int GetErrorMessage(StringBuilder errorMessage, ref int bufferSize);
+        [DllImport(DllFileName)]
+        static extern int CreateMStabProject(string inputXmlString);
+        [DllImport(DllFileName)]
+        static extern int ConvertGeometry2DTo1D(string inputXML, StringBuilder outputXML, ref int bufferSize);
+        [DllImport(DllFileName)]
+        static extern int CreateGeometry2DData(string inputXML, StringBuilder outputXML, ref int bufferSize);
+
+        /// <summary>
+        /// Gets DllVersion
+        /// </summary>
+        /// <returns>version as string</returns>
+        public new string GetDllVersion()
+        {
+            DllVersionInfoStructure dllInfo;
+            DllGetVersion(out dllInfo);
+            return dllInfo.DwBuildNumber.ToString();
+        }
+
+        /// <summary>
+        /// Create ProjectFile for MStab
+        /// </summary>
+        /// <returns>Error number</returns>
+        public int CreateProjectFile(string inputXmlString)
+        {
+            return (CreateMStabProject(inputXmlString));
+        }
+
+        /// <summary>
+        /// returns ErrorMessage
+        /// </summary>
+        /// <returns>Error as string</returns>
+        public new string ErrorMessage()
+        {
+            const int maxErrorMessageLength = 50;
+            int errorMessageLength = maxErrorMessageLength;
+            var errorMessage = new StringBuilder(maxErrorMessageLength);
+            int returnCode = GetErrorMessage(errorMessage, ref errorMessageLength);
+            if (returnCode == DllErrorOutputBufferTooSmall)
+            {
+                errorMessage = new StringBuilder(errorMessageLength);
+                returnCode = GetErrorMessage(errorMessage, ref errorMessageLength);
+            }
+            if (returnCode == DllErrorNone)
+            {
+                return errorMessage.ToString();
+            }
+            else
+            {
+                return "Unknow error";
+            }
+        }
+
+        /// <summary>converts 2D geometry to 1D</summary>
+        /// <param name="inputXml"></param>
+        /// <param name="outputXml"></param>
+        /// <param name="bufferSize"></param>
+        /// <returns>Error as integer</returns>
+        public int Geometry2DTo1DConversion(string inputXml, StringBuilder outputXml, ref int bufferSize)
+        {
+            return (ConvertGeometry2DTo1D(inputXml, outputXml, ref bufferSize));
+        }
+
+        /// <summary>Creates the geometry2 d data from geometry2 d.</summary>
+        /// <param name="inputXml">The input XML.</param>
+        /// <param name="outputXml">The output XML.</param>
+        /// <param name="bufferSize">Size of the buffer.</param>
+        /// <returns></returns>
+        public int CreateGeometry2DDataFromGeometry2D(string inputXml, StringBuilder outputXml, ref int bufferSize)
+        {
+            return (CreateGeometry2DData(inputXml, outputXml, ref bufferSize));
+        }
+
+    }
+}
Index: DamTools/LayerOnSlopeTool/trunk/src/Deltares.LayerOnSlopeTool.StiFileCreator/DGSStandardDLLInterface.cs
===================================================================
diff -u
--- DamTools/LayerOnSlopeTool/trunk/src/Deltares.LayerOnSlopeTool.StiFileCreator/DGSStandardDLLInterface.cs	(revision 0)
+++ DamTools/LayerOnSlopeTool/trunk/src/Deltares.LayerOnSlopeTool.StiFileCreator/DGSStandardDLLInterface.cs	(revision 3100)
@@ -0,0 +1,132 @@
+// Copyright (C) Stichting Deltares 2020. All rights reserved.
+//
+// This file is part of the Dam Engine.
+//
+// The Dam Engine is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
+//
+// All names, logos, and references to "Deltares" are registered trademarks of
+// Stichting Deltares and remain full property of Stichting Deltares at all times.
+// All rights reserved.
+
+using System.Runtime.InteropServices;
+
+namespace Deltares.LayerOnSlopeTool.StiFileCreator
+
+{
+    /// <summary>
+    /// Structure for dll information
+    /// </summary>
+    [StructLayout(LayoutKind.Sequential, Pack = 1)]
+    public struct DllVersionInfoStructure
+    {
+        /// <summary>
+        /// Size of the structure, in bytes
+        /// </summary>
+        public uint CbSize;
+
+        /// <summary>
+        /// Major version of the DLL
+        /// </summary>
+        public uint DwMajorVersion;
+
+        /// <summary>
+        /// Minor version of the DLL
+        /// </summary>
+        public uint DwMinorVersion;
+ 
+        /// <summary>
+        /// Build number of the DLL 
+        /// </summary>
+        public uint DwBuildNumber;
+
+        /// <summary>
+        /// Identifies the platform for which the DLL was built
+        /// </summary>
+        public uint DwPlatformID;
+    }
+
+    /// <summary>
+    /// The standard DLL interface for DGS.
+    /// </summary>
+    public class DgsStandardDllInterface
+    {
+        /// <summary>
+        /// No Licence error
+        /// </summary>
+        public const int DllUErrorNoLicense = 1;
+
+        /// <summary>
+        /// User has aborted error
+        /// </summary>
+        public const int DllErrorUserAborted = 2;
+
+        /// <summary>
+        /// Non compliant xml error
+        /// </summary>
+        public const int DllErrorNonCompliantXml = 3;
+
+        /// <summary>
+        /// Invalid input data error
+        /// </summary>
+        public const int DllErrorInvalidInputData = 4;
+
+        /// <summary>
+        /// Handled fatal error
+        /// </summary>
+        public const int DllErrorHandledFatal = 5;
+
+        /// <summary>
+        /// Unhandled fatal error
+        /// </summary>
+        public const int DllErrorUnhandledFatal = 6;
+
+        /// <summary>
+        /// Invalid handle for dll error
+        /// </summary>
+        public const int DllErrorInvalidHandle = 7;
+
+        /// <summary>
+        /// Output buffer too small error
+        /// </summary>
+        public const int DllErrorOutputBufferTooSmall = 8;
+
+        /// <summary>
+        ///     Error constants
+        /// </summary>
+        public static int DllErrorNone = 0;
+
+        /// <summary>
+        /// Used to hold the last error encountered
+        /// </summary>
+        public static int DllErrorLastErrorCode = 0;
+
+        /// <summary>
+        ///     Example! (remove this wrapper if not needed)
+        /// </summary>
+        /// <returns></returns>
+        public string GetDllVersion()
+        {
+            return "To be implemented";
+        }
+
+        /// <summary>
+        /// List of errormessages 
+        /// </summary>
+        /// <returns></returns>
+        public string ErrorMessage()
+        {
+            return "To be implemented";
+        }
+    }
+}
\ No newline at end of file
Index: DamTools/LayerOnSlopeTool/trunk/src/Deltares.LayerOnSlopeTool.StiFileCreator/Deltares.LayerOnSlopeTool.StiFileCreator.csproj
===================================================================
diff -u -r3093 -r3100
--- DamTools/LayerOnSlopeTool/trunk/src/Deltares.LayerOnSlopeTool.StiFileCreator/Deltares.LayerOnSlopeTool.StiFileCreator.csproj	(.../Deltares.LayerOnSlopeTool.StiFileCreator.csproj)	(revision 3093)
+++ DamTools/LayerOnSlopeTool/trunk/src/Deltares.LayerOnSlopeTool.StiFileCreator/Deltares.LayerOnSlopeTool.StiFileCreator.csproj	(.../Deltares.LayerOnSlopeTool.StiFileCreator.csproj)	(revision 3100)
@@ -44,6 +44,8 @@
     <Reference Include="System.Xml" />
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="DGSMStabDAMInterface.cs" />
+    <Compile Include="DGSStandardDLLInterface.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
     <Compile Include="StiFileCreator.cs" />
     <Compile Include="StiFileCreatorInput.cs" />