diff --git a/CSharp/Plugins/UniversalEditor.Essential/ObjectModels/FileSystem/IFileSystemObjectType.cs b/CSharp/Plugins/UniversalEditor.Essential/ObjectModels/FileSystem/IFileSystemObjectType.cs
new file mode 100644
index 00000000..51020029
--- /dev/null
+++ b/CSharp/Plugins/UniversalEditor.Essential/ObjectModels/FileSystem/IFileSystemObjectType.cs
@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace UniversalEditor.ObjectModels.FileSystem
+{
+	public enum IFileSystemObjectType
+	{
+		None = 0,
+		Folder = 1,
+		File = 2,
+		All = Folder | File
+	}
+}
diff --git a/CSharp/Plugins/UniversalEditor.Essential/UniversalEditor.Essential.csproj b/CSharp/Plugins/UniversalEditor.Essential/UniversalEditor.Essential.csproj
index 5a56fb03..ea4b2d61 100644
--- a/CSharp/Plugins/UniversalEditor.Essential/UniversalEditor.Essential.csproj
+++ b/CSharp/Plugins/UniversalEditor.Essential/UniversalEditor.Essential.csproj
@@ -90,6 +90,7 @@
     <Compile Include="ObjectModels\FileSystem\Folder.cs" />
     <Compile Include="ObjectModels\FileSystem\IFileSystemContainer.cs" />
     <Compile Include="ObjectModels\FileSystem\IFileSystemObject.cs" />
+    <Compile Include="ObjectModels\FileSystem\IFileSystemObjectType.cs" />
     <Compile Include="ObjectModels\Markup\MarkupAttribute.cs" />
     <Compile Include="ObjectModels\Markup\MarkupCommentElement.cs" />
     <Compile Include="ObjectModels\Markup\MarkupContainerElement.cs" />