diff --git a/build/VStudio/winfsp.net.csproj b/build/VStudio/winfsp.net.csproj
index 792a91e2..49c274c4 100644
--- a/build/VStudio/winfsp.net.csproj
+++ b/build/VStudio/winfsp.net.csproj
@@ -41,8 +41,8 @@
     <Reference Include="System" />
   </ItemGroup>
   <ItemGroup>
-    <Compile Include="..\..\src\dotnet\FileSystem+NtStatus.cs">
-      <Link>FileSystem+NtStatus.cs</Link>
+    <Compile Include="..\..\src\dotnet\FileSystem+Const.cs">
+      <Link>FileSystem+Const.cs</Link>
     </Compile>
     <Compile Include="..\..\src\dotnet\FileSystem.cs">
       <Link>FileSystem.cs</Link>
@@ -67,6 +67,7 @@
       <AssemblyInfo Include="[assembly: AssemblyVersion(&quot;$(MyCanonicalVersion)&quot;)]" />
       <AssemblyInfo Include="[assembly: AssemblyFileVersion(&quot;$(MyVersion)&quot;)]" />
     </ItemGroup>
+    <MakeDir Directories="$(IntermediateOutputPath)" />
     <WriteLinesToFile File="$(IntermediateOutputPath)AssemblyInfo.cs" Lines="@(AssemblyInfo)" Overwrite="true" />
     <ItemGroup>
       <Compile Include="$(IntermediateOutputPath)AssemblyInfo.cs" />
diff --git a/src/dotnet/FileSystem+NtStatus.cs b/src/dotnet/FileSystem+Const.cs
similarity index 99%
rename from src/dotnet/FileSystem+NtStatus.cs
rename to src/dotnet/FileSystem+Const.cs
index e17db3a5..decf5599 100644
--- a/src/dotnet/FileSystem+NtStatus.cs
+++ b/src/dotnet/FileSystem+Const.cs
@@ -1,5 +1,5 @@
 /**
- * @file dotnet/FileSystem.cs
+ * @file dotnet/FileSystem+Const.cs
  *
  * @copyright 2015-2017 Bill Zissimopoulos
  */
@@ -22,6 +22,15 @@ namespace Fsp
 
     public partial class FileSystem
     {
+        /* Cleanup */
+        public const UInt32 CleanupDelete = 0x01;
+        public const UInt32 CleanupSetAllocationSize = 0x02;
+        public const UInt32 CleanupSetArchiveBit = 0x10;
+        public const UInt32 CleanupSetLastAccessTime = 0x20;
+        public const UInt32 CleanupSetLastWriteTime = 0x40;
+        public const UInt32 CleanupSetChangeTime = 0x80;
+
+        /* NTSTATUS */
         public const Int32 STATUS_SUCCESS = unchecked((Int32)0x00000000);
         public const Int32 STATUS_WAIT_1 = unchecked((Int32)0x00000001);
         public const Int32 STATUS_WAIT_2 = unchecked((Int32)0x00000002);