diff --git a/.gitignore b/.gitignore
index 105b701..7042daa 100644
--- a/.gitignore
+++ b/.gitignore
@@ -287,3 +287,4 @@ __pycache__/
 *.btm.cs
 *.odx.cs
 *.xsd.cs
+/.claude
diff --git a/CLAUDE.md b/CLAUDE.md
index afc58d6..cac1c5b 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -8,12 +8,20 @@ InformationBox is a Windows Forms library providing a customizable alternative t
 
 ## Build Commands
 
+**IMPORTANT:** Always use the full MSBuild path when building this project. MSBuild is located at:
+`P:\Program Files\Microsoft Visual Studio\18\Community\MSBuild\Current\Bin\msbuild.exe`
+
+Since the solution targets both .NET Framework 4.8 and .NET Core, use MSBuild instead of dotnet:
+
 ```bash
 # Build all projects
-dotnet build InfoBox.sln
+"P:\Program Files\Microsoft Visual Studio\18\Community\MSBuild\Current\Bin\msbuild.exe" InfoBox.sln
+
+# Build with specific configuration
+"P:\Program Files\Microsoft Visual Studio\18\Community\MSBuild\Current\Bin\msbuild.exe" InfoBox.sln /p:Configuration=Release
 
-# Build specific framework
-dotnet build InfoBoxCore/InfoBoxCore.csproj -f net10.0-windows
+# Rebuild all (clean + build)
+"P:\Program Files\Microsoft Visual Studio\18\Community\MSBuild\Current\Bin\msbuild.exe" InfoBox.sln /t:Rebuild
 
 # Run tests
 dotnet test
diff --git a/InfoBox.Designer/InformationBoxDesigner.cs b/InfoBox.Designer/InformationBoxDesigner.cs
index 6e69861..5d628b5 100644
--- a/InfoBox.Designer/InformationBoxDesigner.cs
+++ b/InfoBox.Designer/InformationBoxDesigner.cs
@@ -479,16 +479,22 @@ private AutoCloseParameters GetAutoClose()
 
             if (this.rdbAutoCloseButton.Checked && this.ddlAutoCloseButton.SelectedIndex != -1)
             {
-                return new AutoCloseParameters(
-                    Convert.ToInt32(this.nudAutoCloseSeconds.Value),
-                    (InformationBoxDefaultButton)Enum.Parse(typeof(InformationBoxDefaultButton), this.ddlAutoCloseButton.SelectedItem.ToString()));
+                if (Enum.TryParse<InformationBoxDefaultButton>(this.ddlAutoCloseButton.SelectedItem.ToString(), out var buttonResult))
+                {
+                    return new AutoCloseParameters(
+                        Convert.ToInt32(this.nudAutoCloseSeconds.Value),
+                        buttonResult);
+                }
             }
 
             if (this.rdbAutoCloseResult.Checked && this.ddlAutoCloseResult.SelectedIndex != -1)
             {
-                return new AutoCloseParameters(
-                    Convert.ToInt32(this.nudAutoCloseSeconds.Value),
-                    (InformationBoxResult)Enum.Parse(typeof(InformationBoxResult), this.ddlAutoCloseResult.SelectedItem.ToString()));
+                if (Enum.TryParse<InformationBoxResult>(this.ddlAutoCloseResult.SelectedItem.ToString(), out var resultValue))
+                {
+                    return new AutoCloseParameters(
+                        Convert.ToInt32(this.nudAutoCloseSeconds.Value),
+                        resultValue);
+                }
             }
 
             return new AutoCloseParameters(Convert.ToInt32(this.nudAutoCloseSeconds.Value));
diff --git a/InfoBox.Designer/Properties/AssemblyInfo.cs b/InfoBox.Designer/Properties/AssemblyInfo.cs
index 8618cf8..08afeed 100644
--- a/InfoBox.Designer/Properties/AssemblyInfo.cs
+++ b/InfoBox.Designer/Properties/AssemblyInfo.cs
@@ -17,7 +17,7 @@
 [assembly: AssemblyConfiguration("")]
 [assembly: AssemblyCompany("Johann Blais")]
 [assembly: AssemblyProduct("InformationBox Designer")]
-[assembly: AssemblyCopyright("Copyright © Johann Blais 2007-2013")]
+[assembly: AssemblyCopyright("Copyright © Johann Blais 2007-2026")]
 [assembly: AssemblyTrademark("")]
 [assembly: AssemblyCulture("")]
 
diff --git a/InfoBox.sln b/InfoBox.sln
index 8b4cc7a..dd07fa1 100644
--- a/InfoBox.sln
+++ b/InfoBox.sln
@@ -1,6 +1,6 @@
 Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio Version 17
-VisualStudioVersion = 17.3.32819.101
+# Visual Studio Version 18
+VisualStudioVersion = 18.2.11408.102 d18.0
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{11BF73EF-1C37-4B34-BB1B-E378D733E8DC}"
 EndProject
diff --git a/InfoBox/InfoBox.csproj b/InfoBox/InfoBox.csproj
index a8fe0fe..e2df245 100644
--- a/InfoBox/InfoBox.csproj
+++ b/InfoBox/InfoBox.csproj
@@ -50,6 +50,8 @@
     <BootstrapperEnabled>true</BootstrapperEnabled>
     <TargetFrameworkProfile>
     </TargetFrameworkProfile>
+    <!-- Required for non-string resources when building with .NET SDK 9+ -->
+    <GenerateResourceUsePreserializedResources>false</GenerateResourceUsePreserializedResources>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
@@ -81,7 +83,7 @@
     <CodeContractsUseBaseLine>False</CodeContractsUseBaseLine>
     <CodeContractsRunInBackground>True</CodeContractsRunInBackground>
     <CodeContractsShowSquigglies>True</CodeContractsShowSquigglies>
-    <CodeAnalysisRuleSet>AllRules.ruleset</CodeAnalysisRuleSet>
+    <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
     <Prefer32Bit>false</Prefer32Bit>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
@@ -101,12 +103,13 @@
     <Reference Include="System.Windows.Forms" />
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.1.1" PrivateAssets="all" />
+    <PackageReference Include="Microsoft.SourceLink.GitHub" Version="10.0.102" PrivateAssets="all" />
     <PackageReference Include="Nuget.CommandLine">
-      <Version>6.3.4</Version>
+      <Version>7.0.1</Version>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>
+    <PackageReference Include="System.Resources.Extensions" Version="10.0.2" PrivateAssets="none" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="AsyncResultCallback.cs" />
diff --git a/InfoBox/InfoBox.nuspec b/InfoBox/InfoBox.nuspec
index 32a7c21..7b144c8 100644
--- a/InfoBox/InfoBox.nuspec
+++ b/InfoBox/InfoBox.nuspec
@@ -20,14 +20,14 @@ Stop wasting time developing your own custom MessageBox, everything you need is
             - Removed support for .NET 6.0 (Windows)
             - Added support for .NET 10.0 (Windows)
         </releaseNotes>
-        <copyright>Copyright 2025</copyright>
+        <copyright>Copyright 2026</copyright>
         <language>en-US</language>
         <tags>MessageBox Winforms</tags>
         <repository type="git" url="https://github.com/JohannBlais/InformationBox"></repository>
         <dependencies>
-            <group targetFramework="net8.0-windows11.0" />
-            <group targetFramework="net9.0-windows11.0" />
-            <group targetFramework="net10.0-windows11.0" />
+            <group targetFramework="net8.0-windows7.0" />
+            <group targetFramework="net9.0-windows7.0" />
+            <group targetFramework="net10.0-windows7.0" />
             <group targetFramework="net48" />
         </dependencies>
         <readme>README.md</readme>
@@ -36,15 +36,15 @@ Stop wasting time developing your own custom MessageBox, everything you need is
         <file src="bin\Release\InfoBox.dll" target="lib\net48\" />
         <file src="bin\Release\InfoBox.pdb" target="lib\net48\" />
         <file src="bin\Release\**\InfoBox.resources.dll" target="lib\net48\" />
-        <file src="..\InfoBoxCore\bin\Release\net8.0-windows\InfoBox.dll" target="lib\net8.0-windows11.0\"  />
-        <file src="..\InfoBoxCore\bin\Release\net8.0-windows\InfoBox.pdb" target="lib\net8.0-windows11.0\" />
-        <file src="..\InfoBoxCore\bin\Release\net8.0-windows\**\InfoBox.resources.dll" target="lib\net8.0-windows11.0\" />
-        <file src="..\InfoBoxCore\bin\Release\net9.0-windows\InfoBox.dll" target="lib\net9.0-windows11.0\"  />
-        <file src="..\InfoBoxCore\bin\Release\net9.0-windows\InfoBox.pdb" target="lib\net9.0-windows11.0\" />
-        <file src="..\InfoBoxCore\bin\Release\net9.0-windows\**\InfoBox.resources.dll" target="lib\net9.0-windows11.0\" />
-        <file src="..\InfoBoxCore\bin\Release\net10.0-windows\InfoBox.dll" target="lib\net10.0-windows11.0\"  />
-        <file src="..\InfoBoxCore\bin\Release\net10.0-windows\InfoBox.pdb" target="lib\net10.0-windows11.0\" />
-        <file src="..\InfoBoxCore\bin\Release\net10.0-windows\**\InfoBox.resources.dll" target="lib\net10.0-windows11.0\" />
+        <file src="..\InfoBoxCore\bin\Release\net8.0-windows\InfoBox.dll" target="lib\net8.0-windows7.0\"  />
+        <file src="..\InfoBoxCore\bin\Release\net8.0-windows\InfoBox.pdb" target="lib\net8.0-windows7.0\" />
+        <file src="..\InfoBoxCore\bin\Release\net8.0-windows\**\InfoBox.resources.dll" target="lib\net8.0-windows7.0\" />
+        <file src="..\InfoBoxCore\bin\Release\net9.0-windows\InfoBox.dll" target="lib\net9.0-windows7.0\"  />
+        <file src="..\InfoBoxCore\bin\Release\net9.0-windows\InfoBox.pdb" target="lib\net9.0-windows7.0\" />
+        <file src="..\InfoBoxCore\bin\Release\net9.0-windows\**\InfoBox.resources.dll" target="lib\net9.0-windows7.0\" />
+        <file src="..\InfoBoxCore\bin\Release\net10.0-windows\InfoBox.dll" target="lib\net10.0-windows7.0\"  />
+        <file src="..\InfoBoxCore\bin\Release\net10.0-windows\InfoBox.pdb" target="lib\net10.0-windows7.0\" />
+        <file src="..\InfoBoxCore\bin\Release\net10.0-windows\**\InfoBox.resources.dll" target="lib\net10.0-windows7.0\" />
         <file src="..\README.md" target="\"/>
         <file src="..\Logo.png" target="images\" />
     </files>
diff --git a/InfoBox/Internals/MessageBoxEnumConverter.cs b/InfoBox/Internals/MessageBoxEnumConverter.cs
index b64fa3b..22eec58 100644
--- a/InfoBox/Internals/MessageBoxEnumConverter.cs
+++ b/InfoBox/Internals/MessageBoxEnumConverter.cs
@@ -19,9 +19,15 @@ internal static class MessageBoxEnumConverter
         /// </summary>
         /// <param name="value">The value.</param>
         /// <returns>The converted value</returns>
+        /// <exception cref="ArgumentException">Thrown when conversion fails.</exception>
         internal static InformationBoxButtons Parse(MessageBoxButtons value)
         {
-            return (InformationBoxButtons)Enum.Parse(typeof(InformationBoxButtons), value.ToString());
+            if (Enum.TryParse<InformationBoxButtons>(value.ToString(), out var result))
+            {
+                return result;
+            }
+
+            throw new ArgumentException($"Cannot convert '{value}' to InformationBoxButtons", nameof(value));
         }
 
         /// <summary>
@@ -29,9 +35,15 @@ internal static InformationBoxButtons Parse(MessageBoxButtons value)
         /// </summary>
         /// <param name="value">The value.</param>
         /// <returns>The converted value</returns>
+        /// <exception cref="ArgumentException">Thrown when conversion fails.</exception>
         internal static InformationBoxIcon Parse(MessageBoxIcon value)
         {
-            return (InformationBoxIcon)Enum.Parse(typeof(InformationBoxIcon), value.ToString());
+            if (Enum.TryParse<InformationBoxIcon>(value.ToString(), out var result))
+            {
+                return result;
+            }
+
+            throw new ArgumentException($"Cannot convert '{value}' to InformationBoxIcon", nameof(value));
         }
 
         /// <summary>
@@ -39,9 +51,15 @@ internal static InformationBoxIcon Parse(MessageBoxIcon value)
         /// </summary>
         /// <param name="value">The value.</param>
         /// <returns>The converted value</returns>
+        /// <exception cref="ArgumentException">Thrown when conversion fails.</exception>
         internal static InformationBoxDefaultButton Parse(MessageBoxDefaultButton value)
         {
-            return (InformationBoxDefaultButton)Enum.Parse(typeof(InformationBoxDefaultButton), value.ToString());
+            if (Enum.TryParse<InformationBoxDefaultButton>(value.ToString(), out var result))
+            {
+                return result;
+            }
+
+            throw new ArgumentException($"Cannot convert '{value}' to InformationBoxDefaultButton", nameof(value));
         }
     }
 }
\ No newline at end of file
diff --git a/InfoBox/Properties/AssemblyInfo.cs b/InfoBox/Properties/AssemblyInfo.cs
index 06b3dba..a4fbf4f 100644
--- a/InfoBox/Properties/AssemblyInfo.cs
+++ b/InfoBox/Properties/AssemblyInfo.cs
@@ -21,7 +21,7 @@
 [assembly: AssemblyConfiguration("")]
 [assembly: AssemblyCompany("Johann Blais")]
 [assembly: AssemblyProduct("InformationBox")]
-[assembly: AssemblyCopyright("Copyright © Johann Blais 2007-2022")]
+[assembly: AssemblyCopyright("Copyright © Johann Blais 2007-2026")]
 [assembly: AssemblyTrademark("")]
 [assembly: AssemblyCulture("")]
 
diff --git a/InfoBoxCore.Designer.Tests/CodeGeneration/CSharpGeneratorTests.cs b/InfoBoxCore.Designer.Tests/CodeGeneration/CSharpGeneratorTests.cs
index 3757ed5..6143e92 100644
--- a/InfoBoxCore.Designer.Tests/CodeGeneration/CSharpGeneratorTests.cs
+++ b/InfoBoxCore.Designer.Tests/CodeGeneration/CSharpGeneratorTests.cs
@@ -78,7 +78,7 @@ public void Test0001()
                                                     order: InformationBoxOrder.Default,
                                                     sound: InformationBoxSound.Default);
 
-            Assert.IsTrue(CompileCode(code).Success);
+            Assert.That(CompileCode(code).Success);
         }
 
         [Test]
@@ -113,7 +113,7 @@ public void Test0002()
                                                     order: InformationBoxOrder.Default,
                                                     sound: InformationBoxSound.Default);
 
-            Assert.IsTrue(CompileCode(code).Success);
+            Assert.That(CompileCode(code).Success);
         }
 
         [Test]
@@ -148,7 +148,7 @@ public void Test0003()
                                                     order: InformationBoxOrder.Default,
                                                     sound: InformationBoxSound.Default);
 
-            Assert.IsTrue(CompileCode(code).Success);
+            Assert.That(CompileCode(code).Success);
         }
 
         [Test]
@@ -183,7 +183,7 @@ public void Test0004()
                                                     order: InformationBoxOrder.Default,
                                                     sound: InformationBoxSound.Default);
 
-            Assert.IsTrue(CompileCode(code).Success);
+            Assert.That(CompileCode(code).Success);
         }
 
         [Test]
@@ -218,7 +218,7 @@ public void Test0005()
                                                     order: InformationBoxOrder.Default,
                                                     sound: InformationBoxSound.Default);
 
-            Assert.IsTrue(CompileCode(code).Success);
+            Assert.That(CompileCode(code).Success);
         }
 
         private EmitResult CompileCode(string sourceCode)
diff --git a/InfoBoxCore.Designer.Tests/InfoBoxCore.Designer.Tests.csproj b/InfoBoxCore.Designer.Tests/InfoBoxCore.Designer.Tests.csproj
index 0b1e32f..d07e97f 100644
--- a/InfoBoxCore.Designer.Tests/InfoBoxCore.Designer.Tests.csproj
+++ b/InfoBoxCore.Designer.Tests/InfoBoxCore.Designer.Tests.csproj
@@ -3,14 +3,18 @@
   <PropertyGroup>
     <TargetFramework>net10.0-windows7.0</TargetFramework>
     <IsPackable>false</IsPackable>
+    <Authors>Johann Blais</Authors>
+    <Company>Johann Blais</Company>
+    <Product>InformationBox Designer Tests</Product>
+    <Copyright>Copyright © Johann Blais 2007-2026</Copyright>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.CodeAnalysis.Common" Version="4.3.1" />
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.3.1" />
-    <PackageReference Include="NUnit" Version="3.13.3" />
-    <PackageReference Include="NUnit3TestAdapter" Version="4.3.0" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.4.0" />
+    <PackageReference Include="Microsoft.CodeAnalysis.Common" Version="5.0.0" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="5.0.0" />
+    <PackageReference Include="NUnit" Version="4.4.0" />
+    <PackageReference Include="NUnit3TestAdapter" Version="6.1.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/InfoBoxCore.Designer/InfoBoxCore.Designer.csproj b/InfoBoxCore.Designer/InfoBoxCore.Designer.csproj
index d299ad5..f798526 100644
--- a/InfoBoxCore.Designer/InfoBoxCore.Designer.csproj
+++ b/InfoBoxCore.Designer/InfoBoxCore.Designer.csproj
@@ -8,6 +8,27 @@
         <GenerateTargetFrameworkAttribute>false</GenerateTargetFrameworkAttribute>
         <RootNamespace>InfoBox.Designer</RootNamespace>
         <AssemblyName>InfoBox.Designer</AssemblyName>
+        <Authors>Johann Blais</Authors>
+        <Company>Johann Blais</Company>
+        <Product>InformationBox Designer</Product>
+        <Copyright>Copyright © Johann Blais 2007-2026</Copyright>
+        <NeutralLanguage>en</NeutralLanguage>
+    </PropertyGroup>
+
+    <PropertyGroup Condition="'$(Configuration)|$(TargetFramework)|$(Platform)'=='Debug|net10.0-windows|AnyCPU'">
+      <WarningLevel>8</WarningLevel>
+    </PropertyGroup>
+
+    <PropertyGroup Condition="'$(Configuration)|$(TargetFramework)|$(Platform)'=='Release|net10.0-windows|AnyCPU'">
+      <WarningLevel>8</WarningLevel>
+    </PropertyGroup>
+
+    <PropertyGroup Condition="'$(Configuration)|$(TargetFramework)|$(Platform)'=='Debug|net9.0-windows|AnyCPU'">
+      <WarningLevel>8</WarningLevel>
+    </PropertyGroup>
+
+    <PropertyGroup Condition="'$(Configuration)|$(TargetFramework)|$(Platform)'=='Release|net9.0-windows|AnyCPU'">
+      <WarningLevel>8</WarningLevel>
     </PropertyGroup>
 
     <ItemGroup>
diff --git a/InfoBoxCore/InfoBoxCore.csproj b/InfoBoxCore/InfoBoxCore.csproj
index c1ed11c..1e2d0b0 100644
--- a/InfoBoxCore/InfoBoxCore.csproj
+++ b/InfoBoxCore/InfoBoxCore.csproj
@@ -16,6 +16,6 @@
     </ItemGroup>
 
     <ItemGroup>
-        <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.1.1" PrivateAssets="All" />
+        <PackageReference Include="Microsoft.SourceLink.GitHub" Version="10.0.102" PrivateAssets="All" />
     </ItemGroup>
 </Project>
\ No newline at end of file