diff --git a/ICSharpCode.Decompiler.Tests/ICSharpCode.Decompiler.Tests.csproj b/ICSharpCode.Decompiler.Tests/ICSharpCode.Decompiler.Tests.csproj
index fabc14eba..040170ca1 100644
--- a/ICSharpCode.Decompiler.Tests/ICSharpCode.Decompiler.Tests.csproj
+++ b/ICSharpCode.Decompiler.Tests/ICSharpCode.Decompiler.Tests.csproj
@@ -17,6 +17,7 @@
     <EnableDefaultItems>false</EnableDefaultItems>
 
     <AutoGenerateBindingRedirects>True</AutoGenerateBindingRedirects>
+    <EnableUnsafeBinaryFormatterSerialization>True</EnableUnsafeBinaryFormatterSerialization>
 
     <SignAssembly>True</SignAssembly>
     <AssemblyOriginatorKeyFile>..\ICSharpCode.Decompiler\ICSharpCode.Decompiler.snk</AssemblyOriginatorKeyFile>
@@ -61,6 +62,7 @@
     <PackageReference Include="Mono.Cecil" Version="$(MonoCecilVersion)" />
     <PackageReference Include="Microsoft.NETCore.ILAsm" Version="$(ILAsmVersion)" />
     <PackageReference Include="Microsoft.NETCore.ILDAsm" Version="$(ILDAsmVersion)" />
+    <PackageReference Include="System.Resources.Extensions" Version="6.0.0" />
   </ItemGroup>
 
   <ItemGroup>
@@ -113,6 +115,7 @@
     <Compile Include="Output\InsertParenthesesVisitorTests.cs" />
     <Compile Include="ProjectDecompiler\TargetFrameworkTests.cs" />
     <Compile Include="TestAssemblyResolver.cs" />
+    <Compile Include="Util\ResourceReaderWriterTests.cs" />
     <None Include="TestCases\VBPretty\VBAutomaticEvents.vb" />
     <Compile Include="TestCases\VBPretty\VBAutomaticEvents.cs" />
     <Compile Include="TestCases\VBPretty\VBNonGenericForEach.cs" />
@@ -337,6 +340,7 @@
     <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>
diff --git a/ICSharpCode.Decompiler.Tests/Util/ResourceReaderWriterTests.cs b/ICSharpCode.Decompiler.Tests/Util/ResourceReaderWriterTests.cs
new file mode 100644
index 000000000..cad0afa93
--- /dev/null
+++ b/ICSharpCode.Decompiler.Tests/Util/ResourceReaderWriterTests.cs
@@ -0,0 +1,189 @@
+// Copyright (c) 2023 Siegfried Pammer
+// 
+// Permission is hereby granted, free of charge, to any person obtaining a copy of this
+// software and associated documentation files (the "Software"), to deal in the Software
+// without restriction, including without limitation the rights to use, copy, modify, merge,
+// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
+// to whom the Software is furnished to do so, subject to the following conditions:
+// 
+// The above copyright notice and this permission notice shall be included in all copies or
+// substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
+// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+using System;
+using System.Globalization;
+using System.IO;
+using System.Linq;
+using System.Resources;
+using System.Runtime.CompilerServices;
+using System.Xml.Linq;
+using System.Xml.XPath;
+
+using ICSharpCode.Decompiler.Util;
+
+using NUnit.Framework;
+using NUnit.Framework.Internal;
+
+namespace ICSharpCode.Decompiler.Tests.Util
+{
+	[TestFixture]
+	public class ResourceReaderWriterTests
+	{
+		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";
+
+		[Serializable]
+		public class SerializableClass
+		{
+			public string Name { get; set; }
+			public int Age { get; set; }
+		}
+
+		static readonly object[][] TestWriteCases = {
+			new object[] { "Decimal", 1.0m, "1.0", "System.Decimal" + 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 },
+		};
+
+		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 MemoryStream ProduceResourcesTestFile<T>(string name, T value)
+		{
+			var ms = new MemoryStream();
+			var writer = new ResourceWriter(ms);
+			writer.AddResource(name, value);
+			writer.Generate();
+			ms.Position = 0;
+			return ms;
+		}
+
+		static XElement ProduceResXTest<T>(string name, T value)
+		{
+			using var ms = new MemoryStream();
+			var writer = new ResXResourceWriter(ms);
+			writer.AddResource(name, value);
+			writer.Generate();
+			ms.Position = 0;
+			var doc = XDocument.Load(ms);
+			return doc.XPathSelectElement(".//data");
+		}
+
+		[TestCase("Null", null)]
+		[TestCase("String", "Hello World!")]
+		[TestCase("Char", 'A')]
+		[TestCase("Bool", true)]
+		[TestCase("Bool", false)]
+		[TestCase("Byte", (byte)1)]
+		[TestCase("SByte", (sbyte)-1)]
+		[TestCase("Int16", (short)1)]
+		[TestCase("UInt16", (ushort)1)]
+		[TestCase("Int32", 1)]
+		[TestCase("UInt32", (uint)1)]
+		[TestCase("Int64", (long)1)]
+		[TestCase("UInt64", (ulong)1)]
+		[TestCase("Single", 1.0f)]
+		[TestCase("Double", 1.0d)]
+		[TestCase("Bytes", new byte[] { 42, 43, 44 })]
+		[TestCaseSource(nameof(TestReadCases))]
+		public void Read(string name, object value)
+		{
+			using var testFile = ProduceResourcesTestFile(name, value);
+			using var reader = new ResourcesFile(testFile);
+			var items = reader.ToArray();
+			Assert.AreEqual(1, items.Length);
+			Assert.AreEqual(name, items[0].Key);
+			Assert.AreEqual(value, items[0].Value);
+		}
+
+		[TestCase("Null", null, null, "System.Resources.ResXNullRef" + WinFormsAssemblyName)]
+		[TestCase("String", "Hello World!", "Hello World!", null)]
+		[TestCase("Bool", true, "True", "System.Boolean" + MSCorLibAssemblyName)]
+		[TestCase("Bool", false, "False", "System.Boolean" + MSCorLibAssemblyName)]
+		[TestCase("Char", 'A', "A", "System.Char" + MSCorLibAssemblyName)]
+		[TestCase("Byte", (byte)1, "1", "System.Byte" + MSCorLibAssemblyName)]
+		[TestCase("SByte", (sbyte)-1, "-1", "System.SByte" + MSCorLibAssemblyName)]
+		[TestCase("Int16", (short)1, "1", "System.Int16" + MSCorLibAssemblyName)]
+		[TestCase("UInt16", (ushort)1, "1", "System.UInt16" + MSCorLibAssemblyName)]
+		[TestCase("Int32", 1, "1", "System.Int32" + MSCorLibAssemblyName)]
+		[TestCase("UInt32", (uint)1, "1", "System.UInt32" + MSCorLibAssemblyName)]
+		[TestCase("Int64", (long)1, "1", "System.Int64" + MSCorLibAssemblyName)]
+		[TestCase("UInt64", (ulong)1, "1", "System.UInt64" + MSCorLibAssemblyName)]
+		[TestCase("Single", 1.0f, "1", "System.Single" + MSCorLibAssemblyName)]
+		[TestCase("Double", 1.0d, "1", "System.Double" + MSCorLibAssemblyName)]
+		[TestCaseSource(nameof(TestWriteCases))]
+		public void Write(string name, object value, string serializedValue, string typeName)
+		{
+			var element = ProduceResXTest(name, value);
+			Assert.AreEqual(name, element.Attribute("name")?.Value);
+			if (typeName != null)
+			{
+				Assert.AreEqual(typeName, element.Attribute("type")?.Value);
+			}
+			var v = element.Element("value");
+			Assert.IsNotNull(v);
+			Assert.IsTrue(v.IsEmpty ? serializedValue == null : v.Value == serializedValue);
+		}
+
+		[Test]
+		public void ResXSerializableClassIsRejected()
+		{
+			Assert.Throws<NotSupportedException>(
+				() => ProduceResXTest("Serial", new SerializableClass { Name = "Hugo", Age = 42 })
+			);
+		}
+
+		[Test]
+		public void BitmapIsResourceSerializedObject()
+		{
+			Stream stream = typeof(ResourceReaderWriterTests).Assembly
+				.GetManifestResourceStream(typeof(ResourceReaderWriterTests).Namespace + ".Test.resources");
+			using var reader = new ResourcesFile(stream);
+			var items = reader.ToArray();
+			Assert.AreEqual(3, items.Length);
+			var item = items.FirstOrDefault(i => i.Key == "Bitmap");
+			Assert.IsNotNull(item.Key);
+			Assert.IsInstanceOf<ResourceSerializedObject>(item.Value);
+		}
+
+		[Test]
+		public void ByteArrayIsSupported()
+		{
+			Stream stream = typeof(ResourceReaderWriterTests).Assembly
+				.GetManifestResourceStream(typeof(ResourceReaderWriterTests).Namespace + ".Test.resources");
+			using var reader = new ResourcesFile(stream);
+			var items = reader.ToArray();
+			Assert.AreEqual(3, items.Length);
+			var item = items.FirstOrDefault(i => i.Key == "Byte[]");
+			Assert.IsNotNull(item.Key);
+			Assert.IsInstanceOf<byte[]>(item.Value);
+			byte[] array = (byte[])item.Value;
+			Assert.AreEqual(3, array.Length);
+			Assert.AreEqual(42, array[0]);
+			Assert.AreEqual(43, array[1]);
+			Assert.AreEqual(44, array[2]);
+		}
+
+		[Test]
+		public void MemoryStreamIsSupported()
+		{
+			Stream stream = typeof(ResourceReaderWriterTests).Assembly
+				.GetManifestResourceStream(typeof(ResourceReaderWriterTests).Namespace + ".Test.resources");
+			using var reader = new ResourcesFile(stream);
+			var items = reader.ToArray();
+			Assert.AreEqual(3, items.Length);
+			var item = items.FirstOrDefault(i => i.Key == "MemoryStream");
+			Assert.IsNotNull(item.Key);
+			Assert.IsInstanceOf<MemoryStream>(item.Value);
+		}
+	}
+}
\ No newline at end of file
diff --git a/ICSharpCode.Decompiler.Tests/Util/Test.resources b/ICSharpCode.Decompiler.Tests/Util/Test.resources
new file mode 100644
index 000000000..375a8c249
Binary files /dev/null and b/ICSharpCode.Decompiler.Tests/Util/Test.resources differ