Add tree node icon for Static Class.

ILSpy/ILSpy.csproj

@@ -236,6 +236,7 @@
   </ItemGroup>
   <ItemGroup>
     <Resource Include="Images\Class.png" />
+    <Resource Include="Images\StaticClass.png" />
     <Resource Include="Images\Delegate.png" />
     <Resource Include="Images\Enum.png" />
     <Resource Include="Images\Field.png" />
@@ -303,6 +304,5 @@
       <Name>ICSharpCode.TreeView</Name>
     </ProjectReference>
   </ItemGroup>
-  <ItemGroup />
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.Targets" />
 </Project>

ILSpy/Images/Images.cs

@@ -65,6 +65,7 @@ namespace ICSharpCode.ILSpy
 		public static readonly BitmapImage Interface = LoadBitmap("Interface");
 		public static readonly BitmapImage Delegate = LoadBitmap("Delegate");
 		public static readonly BitmapImage Enum = LoadBitmap("Enum");
+		public static readonly BitmapImage StaticClass = LoadBitmap("StaticClass");
 
 
 		public static readonly BitmapImage Field = LoadBitmap("Field");
@@ -133,6 +134,7 @@ namespace ICSharpCode.ILSpy
 				PreloadPublicIconToCache(TypeIcon.Struct, Images.Struct);
 				PreloadPublicIconToCache(TypeIcon.Interface, Images.Interface);
 				PreloadPublicIconToCache(TypeIcon.Delegate, Images.Delegate);
+				PreloadPublicIconToCache(TypeIcon.StaticClass, Images.StaticClass);
 			}
 
 			protected override ImageSource GetBaseImage(TypeIcon icon)
@@ -154,6 +156,9 @@ namespace ICSharpCode.ILSpy
 					case TypeIcon.Delegate:
 						baseImage = Images.Delegate;
 						break;
+					case TypeIcon.StaticClass:
+						baseImage = Images.StaticClass;
+						break;
 					default:
 						throw new NotSupportedException();
 				}

ILSpy/Images/TypeIcon.cs

@@ -26,6 +26,7 @@ namespace ICSharpCode.ILSpy
 		Enum,
 		Struct,
 		Interface,
-		Delegate
+		Delegate,
+		StaticClass
 	}
 }

ILSpy/TreeNodes/TypeTreeNode.cs

@@ -146,8 +146,10 @@ namespace ICSharpCode.ILSpy.TreeNodes
 			} else {
 				if (type.IsInterface)
 					return TypeIcon.Interface;
-				else if (type.BaseType != null && type.BaseType.FullName == typeof(MulticastDelegate).FullName)
+				else if (IsDelegate(type))
 					return TypeIcon.Delegate;
+				else if (IsStaticClass(type))
+					return TypeIcon.StaticClass;
 				else
 					return TypeIcon.Class;
 			}
@@ -178,6 +180,20 @@ namespace ICSharpCode.ILSpy.TreeNodes
 			}
 			return overlay;
 		}
+
+		private static bool IsDelegate(TypeDefinition type)
+		{
+			return type.BaseType != null && type.BaseType.FullName == typeof(MulticastDelegate).FullName;
+		}
+
+		private static bool IsStaticClass(TypeDefinition type)
+		{
+			if(type.IsSealed)
+				return !type.Methods.Where(m => m.Name == ".ctor").Any(m => !m.IsPrivate);
+
+			return false;
+		}
+
 		#endregion
 		
 		MemberReference IMemberTreeNode.Member {