Fix #3001: Support new resources format in ResourcesFile/ResXResourceWriter

ICSharpCode.Decompiler.Tests/ICSharpCode.Decompiler.Tests.csproj

@@ -130,7 +130,6 @@
     <Compile Include="ProjectDecompiler\TargetFrameworkTests.cs" />
     <Compile Include="TestAssemblyResolver.cs" />
     <Compile Include="TestCases\ILPretty\MonoFixed.cs" />
-    <Compile Include="Util\ResourceReaderWriterTests.cs" />
     <None Include="TestCases\VBPretty\VBAutomaticEvents.vb" />
     <Compile Include="TestCases\VBPretty\VBAutomaticEvents.cs" />
     <Compile Include="TestCases\VBPretty\VBNonGenericForEach.cs" />
@@ -356,7 +355,6 @@
     <None Include="TestCases\VBPretty\VBCompoundAssign.vb" />
     <None Include="TestCases\VBPretty\Async.vb" />
     <None Include="TestCases\VBPretty\VBPropertiesTest.vb" />
-    <EmbeddedResource Include="Util\Test.resources" />
   </ItemGroup>
 
 </Project>

ICSharpCode.Decompiler/Util/ResXResourceWriter.cs

@@ -36,6 +36,8 @@ using System.IO;
 using System.Text;
 using System.Xml;
 
+using ICSharpCode.Decompiler.Metadata;
+
 namespace ICSharpCode.Decompiler.Util
 {
 #if INSIDE_SYSTEM_WEB
@@ -150,7 +152,7 @@ namespace ICSharpCode.Decompiler.Util
 			{
 				writer.WriteAttributeString("mimetype", BinSerializedObjectMimeType);
 				writer.WriteStartElement("value");
-				writer.WriteBase64(value, offset, length);
+				WriteNiceBase64(value, offset, length);
 			}
 
 			writer.WriteEndElement();
@@ -274,7 +276,7 @@ namespace ICSharpCode.Decompiler.Util
 					break;
 				case ResourceSerializedObject rso:
 					var bytes = rso.GetBytes();
-					WriteBytes(name, null, bytes, 0, bytes.Length, comment);
+					WriteBytes(name, rso.TypeName, bytes, 0, bytes.Length, comment);
 					break;
 				default:
 					throw new NotSupportedException($"Value '{value}' of type {value.GetType().FullName} is not supported by this version of ResXResourceWriter. Use byte arrays or streams instead.");

ICSharpCode.Decompiler/Util/ResourcesFile.cs

@@ -76,12 +76,21 @@ namespace ICSharpCode.Decompiler.Util
 			StartOfUserTypes = 0x40
 		}
 
+		enum SerializationFormat
+		{
+			BinaryFormatter = 1,
+			TypeConverterByteArray = 2,
+			TypeConverterString = 3,
+			ActivatorStream = 4
+		}
+
 		/// <summary>Holds the number used to identify resource files.</summary>
 		public const int MagicNumber = unchecked((int)0xBEEFCACE);
 		const int ResourceSetVersion = 2;
 
 		readonly MyBinaryReader reader;
 		readonly int version;
+		readonly bool usesSerializationFormat;
 		readonly int numResources;
 		readonly string[] typeTable;
 		readonly int[] namePositions;
@@ -94,7 +103,7 @@ namespace ICSharpCode.Decompiler.Util
 		/// Creates a new ResourcesFile.
 		/// </summary>
 		/// <param name="stream">Input stream.</param>
-		/// <param name="leaveOpen">Whether the stream should be help open when the ResourcesFile is disposed.</param>
+		/// <param name="leaveOpen">Whether the stream should be held open when the ResourcesFile is disposed.</param>
 		/// <remarks>
 		/// The stream is must be held open while the ResourcesFile is in use.
 		/// The stream must be seekable; any operation using the ResourcesFile will end up seeking the stream.
@@ -130,7 +139,8 @@ namespace ICSharpCode.Decompiler.Util
 				// We don't care about numBytesToSkip; read the rest of the header
 
 				// readerType:
-				reader.ReadString();
+				string readerType = reader.ReadString();
+				usesSerializationFormat = readerType == "System.Resources.Extensions.DeserializingResourceReader, System.Resources.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51";
 				// resourceSetType:
 				reader.ReadString();
 			}
@@ -369,7 +379,7 @@ namespace ICSharpCode.Decompiler.Util
 						bits[i] = reader.ReadInt32();
 					return new decimal(bits);
 				default:
-					return new ResourceSerializedObject(FindType(typeIndex), this, reader.BaseStream.Position);
+					return new ResourceSerializedObject(FindType(typeIndex), this, reader.BaseStream.Position, usesSerializationFormat);
 			}
 		}
 
@@ -461,7 +471,7 @@ namespace ICSharpCode.Decompiler.Util
 					{
 						throw new BadImageFormatException("Invalid typeCode");
 					}
-					return new ResourceSerializedObject(FindType(typeCode - ResourceTypeCode.StartOfUserTypes), this, reader.BaseStream.Position);
+					return new ResourceSerializedObject(FindType(typeCode - ResourceTypeCode.StartOfUserTypes), this, reader.BaseStream.Position, usesSerializationFormat);
 			}
 		}
 
@@ -509,7 +519,7 @@ namespace ICSharpCode.Decompiler.Util
 			}
 		}
 
-		internal byte[] GetBytesForSerializedObject(long pos)
+		internal byte[] GetBytesForSerializedObject(long pos, bool usesSerializationFormat)
 		{
 			long[] positions = GetStartPositions();
 			int i = Array.BinarySearch(positions, pos);
@@ -535,6 +545,12 @@ namespace ICSharpCode.Decompiler.Util
 				}
 				int len = (int)(endPos - pos);
 				reader.Seek(pos, SeekOrigin.Begin);
+				if (usesSerializationFormat)
+				{
+					int kind = reader.Read7BitEncodedInt();
+					Debug.Assert(Enum.IsDefined(typeof(SerializationFormat), kind));
+					len = reader.Read7BitEncodedInt();
+				}
 				return reader.ReadBytes(len);
 			}
 		}
@@ -545,12 +561,14 @@ namespace ICSharpCode.Decompiler.Util
 		public string? TypeName { get; }
 		readonly ResourcesFile file;
 		readonly long position;
+		readonly bool usesSerializationFormat;
 
-		internal ResourceSerializedObject(string? typeName, ResourcesFile file, long position)
+		internal ResourceSerializedObject(string? typeName, ResourcesFile file, long position, bool usesSerializationFormat)
 		{
-			this.TypeName = typeName;
+			this.TypeName = usesSerializationFormat ? typeName : null;
 			this.file = file;
 			this.position = position;
+			this.usesSerializationFormat = usesSerializationFormat;
 		}
 
 		/// <summary>
@@ -558,7 +576,7 @@ namespace ICSharpCode.Decompiler.Util
 		/// </summary>
 		public Stream GetStream()
 		{
-			return new MemoryStream(file.GetBytesForSerializedObject(position), writable: false);
+			return new MemoryStream(file.GetBytesForSerializedObject(position, usesSerializationFormat), writable: false);
 		}
 
 		/// <summary>
@@ -566,7 +584,7 @@ namespace ICSharpCode.Decompiler.Util
 		/// </summary>
 		public byte[] GetBytes()
 		{
-			return file.GetBytesForSerializedObject(position);
+			return file.GetBytesForSerializedObject(position, usesSerializationFormat);
 		}
 	}
 }

ILSpy.Tests/ILSpy.Tests.csproj

@@ -41,6 +41,19 @@
     <Compile Include="Analyzers\TestCases\MainAssembly.cs" />
     <Compile Include="Analyzers\TypeUsedByAnalyzerTests.cs" />
     <Compile Include="CommandLineArgumentsTests.cs" />
+    <Compile Include="ResourceReaderWriterTests.cs" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <EmbeddedResource Include="Icon.ico" />
+    <EmbeddedResource Include="Test.resources" />
+    <EmbeddedResource Include="IconContainer.resx">
+      <Generator>ResXCodeGenerator</Generator>
+    </EmbeddedResource>
+  </ItemGroup>
+
+  <ItemGroup>
+    <EmbeddedResource Include="BitmapContainer.resources" />
   </ItemGroup>
 
   <ItemGroup>

ILSpy.Tests/IconContainer.resx

@@ -0,0 +1,124 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!-- 
+    Microsoft ResX Schema 
+    
+    Version 2.0
+    
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+    
+    Example:
+    
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+                
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+    
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+    
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+    
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+    
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <assembly alias="System.Windows.Forms" name="System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
+  <data name="Icon" type="System.Resources.ResXFileRef, System.Windows.Forms">
+    <value>Icon.ico;System.Drawing.Icon, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
+  </data>
+</root>

ILSpy.Tests/ResourceReaderWriterTests.cs

@@ -17,11 +17,10 @@
 // DEALINGS IN THE SOFTWARE.
 
 using System;
+using System.Drawing;
 using System.Globalization;
 using System.IO;
 using System.Linq;
-using System.Resources;
-using System.Runtime.CompilerServices;
 using System.Xml.Linq;
 using System.Xml.XPath;
 
@@ -30,13 +29,16 @@ using ICSharpCode.Decompiler.Util;
 using NUnit.Framework;
 using NUnit.Framework.Internal;
 
-namespace ICSharpCode.Decompiler.Tests.Util
+using TomsToolbox.Essentials;
+
+namespace ICSharpCode.ILSpy.Tests
 {
 	[TestFixture]
 	public class ResourceReaderWriterTests
 	{
-		const string WinFormsAssemblyName = ", System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089";
+		const string winFormsAssemblyName = ", System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089";
-		const string MSCorLibAssemblyName = ", mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089";
+		const string msCorLibAssemblyName = ", mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089";
+		const string drawingAssemblyName = ", System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a";
 
 		[Serializable]
 		public class SerializableClass
@@ -45,22 +47,27 @@ namespace ICSharpCode.Decompiler.Tests.Util
 			public int Age { get; set; }
 		}
 
-		static readonly object[][] TestWriteCases = {
+		static readonly object[][] testWriteCases = {
-			new object[] { "Decimal", 1.0m, "1.0", "System.Decimal" + MSCorLibAssemblyName },
+			new object[] { "Decimal", 1.0m, "1.0", "System.Decimal" + msCorLibAssemblyName },
-			new object[] { "TimeSpan", TimeSpan.FromSeconds(42), "00:00:42", "System.TimeSpan" + MSCorLibAssemblyName },
+			new object[] { "TimeSpan", TimeSpan.FromSeconds(42), "00:00:42", "System.TimeSpan" + msCorLibAssemblyName },
-			new object[] { "DateTime", DateTime.Parse("06/18/2023 21:36:30", CultureInfo.InvariantCulture), "06/18/2023 21:36:30", "System.DateTime" + MSCorLibAssemblyName },
+			new object[] { "DateTime", DateTime.Parse("06/18/2023 21:36:30", CultureInfo.InvariantCulture), "06/18/2023 21:36:30", "System.DateTime" + msCorLibAssemblyName },
 		};
 
-		static readonly object[][] TestReadCases = {
+		static readonly object[][] testReadCases = {
 			new object[] { "Decimal", 1.0m },
 			new object[] { "TimeSpan", TimeSpan.FromSeconds(42) },
 			new object[] { "DateTime", DateTime.Parse("06/18/2023 21:36:30", CultureInfo.InvariantCulture) },
 		};
 
+		static Stream GetResource(string fileName)
+		{
+			return typeof(ResourceReaderWriterTests).Assembly.GetManifestResourceStream(typeof(ResourceReaderWriterTests).Namespace + "." + fileName);
+		}
+
 		static MemoryStream ProduceResourcesTestFile<T>(string name, T value)
 		{
 			var ms = new MemoryStream();
-			var writer = new ResourceWriter(ms);
+			var writer = new System.Resources.ResourceWriter(ms);
 			writer.AddResource(name, value);
 			writer.Generate();
 			ms.Position = 0;
@@ -70,7 +77,7 @@ namespace ICSharpCode.Decompiler.Tests.Util
 		static XElement ProduceResXTest<T>(string name, T value)
 		{
 			using var ms = new MemoryStream();
-			var writer = new ResXResourceWriter(ms);
+			var writer = new Decompiler.Util.ResXResourceWriter(ms);
 			writer.AddResource(name, value);
 			writer.Generate();
 			ms.Position = 0;
@@ -94,7 +101,7 @@ namespace ICSharpCode.Decompiler.Tests.Util
 		[TestCase("Single", 1.0f)]
 		[TestCase("Double", 1.0d)]
 		[TestCase("Bytes", new byte[] { 42, 43, 44 })]
-		[TestCaseSource(nameof(TestReadCases))]
+		[TestCaseSource(nameof(testReadCases))]
 		public void Read(string name, object value)
 		{
 			using var testFile = ProduceResourcesTestFile(name, value);
@@ -105,22 +112,22 @@ namespace ICSharpCode.Decompiler.Tests.Util
 			Assert.That(items[0].Value, Is.EqualTo(value));
 		}
 
-		[TestCase("Null", null, null, "System.Resources.ResXNullRef" + WinFormsAssemblyName)]
+		[TestCase("Null", null, null, "System.Resources.ResXNullRef" + winFormsAssemblyName)]
 		[TestCase("String", "Hello World!", "Hello World!", null)]
-		[TestCase("Bool", true, "True", "System.Boolean" + MSCorLibAssemblyName)]
+		[TestCase("Bool", true, "True", "System.Boolean" + msCorLibAssemblyName)]
-		[TestCase("Bool", false, "False", "System.Boolean" + MSCorLibAssemblyName)]
+		[TestCase("Bool", false, "False", "System.Boolean" + msCorLibAssemblyName)]
-		[TestCase("Char", 'A', "A", "System.Char" + MSCorLibAssemblyName)]
+		[TestCase("Char", 'A', "A", "System.Char" + msCorLibAssemblyName)]
-		[TestCase("Byte", (byte)1, "1", "System.Byte" + MSCorLibAssemblyName)]
+		[TestCase("Byte", (byte)1, "1", "System.Byte" + msCorLibAssemblyName)]
-		[TestCase("SByte", (sbyte)-1, "-1", "System.SByte" + MSCorLibAssemblyName)]
+		[TestCase("SByte", (sbyte)-1, "-1", "System.SByte" + msCorLibAssemblyName)]
-		[TestCase("Int16", (short)1, "1", "System.Int16" + MSCorLibAssemblyName)]
+		[TestCase("Int16", (short)1, "1", "System.Int16" + msCorLibAssemblyName)]
-		[TestCase("UInt16", (ushort)1, "1", "System.UInt16" + MSCorLibAssemblyName)]
+		[TestCase("UInt16", (ushort)1, "1", "System.UInt16" + msCorLibAssemblyName)]
-		[TestCase("Int32", 1, "1", "System.Int32" + MSCorLibAssemblyName)]
+		[TestCase("Int32", 1, "1", "System.Int32" + msCorLibAssemblyName)]
-		[TestCase("UInt32", (uint)1, "1", "System.UInt32" + MSCorLibAssemblyName)]
+		[TestCase("UInt32", (uint)1, "1", "System.UInt32" + msCorLibAssemblyName)]
-		[TestCase("Int64", (long)1, "1", "System.Int64" + MSCorLibAssemblyName)]
+		[TestCase("Int64", (long)1, "1", "System.Int64" + msCorLibAssemblyName)]
-		[TestCase("UInt64", (ulong)1, "1", "System.UInt64" + MSCorLibAssemblyName)]
+		[TestCase("UInt64", (ulong)1, "1", "System.UInt64" + msCorLibAssemblyName)]
-		[TestCase("Single", 1.0f, "1", "System.Single" + MSCorLibAssemblyName)]
+		[TestCase("Single", 1.0f, "1", "System.Single" + msCorLibAssemblyName)]
-		[TestCase("Double", 1.0d, "1", "System.Double" + MSCorLibAssemblyName)]
+		[TestCase("Double", 1.0d, "1", "System.Double" + msCorLibAssemblyName)]
-		[TestCaseSource(nameof(TestWriteCases))]
+		[TestCaseSource(nameof(testWriteCases))]
 		public void Write(string name, object value, string serializedValue, string typeName)
 		{
 			var element = ProduceResXTest(name, value);
@@ -153,6 +160,8 @@ namespace ICSharpCode.Decompiler.Tests.Util
 			var item = items.FirstOrDefault(i => i.Key == "Bitmap");
 			Assert.That(item.Key, Is.Not.Null);
 			Assert.That(item.Value, Is.InstanceOf<ResourceSerializedObject>());
+			var rso = (ResourceSerializedObject)item.Value;
+			Assert.That(rso.TypeName, Is.Null);
 		}
 
 		[Test]
@@ -185,5 +194,39 @@ namespace ICSharpCode.Decompiler.Tests.Util
 			Assert.That(item.Key, Is.Not.Null);
 			Assert.That(item.Value, Is.InstanceOf<MemoryStream>());
 		}
+
+		[Test]
+		public void IconDataCanBeDeserializedFromResX()
+		{
+			// Uses new serialization format
+			var resourcesStream = GetResource("IconContainer.resources");
+			var reader = new ResourcesFile(resourcesStream);
+			var item = reader.Single();
+			Assert.That(item.Key, Is.EqualTo("Icon"));
+			Assert.That(item.Value, Is.InstanceOf<ResourceSerializedObject>());
+			var rso = (ResourceSerializedObject)item.Value;
+			var xml = ProduceResXTest("Icon", rso);
+			Assert.That(xml.GetAttribute("name"), Is.EqualTo("Icon"));
+			Assert.That(xml.GetAttribute("type"), Is.EqualTo("System.Drawing.Icon" + drawingAssemblyName));
+			Assert.That(xml.GetAttribute("mimetype"), Is.EqualTo("application/x-microsoft.net.object.bytearray.base64"));
+			var base64Icon = xml.Element("value").Value;
+			using var memory = new MemoryStream(Convert.FromBase64String(base64Icon));
+			new Icon(memory);
+		}
+
+		[Test]
+		public void BitmapDataCanBeDeserializedFromResX()
+		{
+			// Uses old serialization format
+			var resourcesStream = GetResource("BitmapContainer.resources");
+			var reader = new ResourcesFile(resourcesStream);
+			var item = reader.Single(x => x.Key == "Image1");
+			Assert.That(item.Value, Is.InstanceOf<ResourceSerializedObject>());
+			var rso = (ResourceSerializedObject)item.Value;
+			var xml = ProduceResXTest("Image1", rso);
+			Assert.That(xml.GetAttribute("name"), Is.EqualTo("Image1"));
+			Assert.That(xml.GetAttribute("type"), Is.Null);
+			Assert.That(xml.GetAttribute("mimetype"), Is.EqualTo("application/x-microsoft.net.object.binary.base64"));
+		}
 	}
 }