diff --git a/.github/workflows/build-release.yml b/.github/workflows/build-release.yml
index 07539b3..da8b323 100644
--- a/.github/workflows/build-release.yml
+++ b/.github/workflows/build-release.yml
@@ -15,11 +15,19 @@ jobs:
     - name: Checkout code
       uses: actions/checkout@v4
     
-    - name: Setup MSBuild
-      uses: microsoft/setup-msbuild@v2
+    - name: Setup .NET
+      uses: actions/setup-dotnet@v4
+      with:
+        dotnet-version: '8.0'
     
     - name: Build Release
-      run: msbuild JavaToCSharp.csproj /p:Configuration=Release /p:Platform="Any CPU"
+      run: dotnet build -c Release
+    
+    - name: Upload artifact
+      uses: actions/upload-artifact@v4
+      with:
+        name: JavaToCSharp-Release
+        path: bin/Release/net8.0/JavaToCSharp.dll
     
     - name: Upload artifact
       uses: actions/upload-artifact@v4
diff --git a/JavaToCSharp.csproj b/JavaToCSharp.csproj
index f35331d..fb97858 100644
--- a/JavaToCSharp.csproj
+++ b/JavaToCSharp.csproj
@@ -1,72 +1,15 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project Sdk="Microsoft.NET.Sdk">
+
   <PropertyGroup>
-    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
-    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
-    <ProductVersion>9.0.30729</ProductVersion>
-    <SchemaVersion>2.0</SchemaVersion>
-    <ProjectGuid>{766E09AF-B872-444D-BD76-C8BB17E38DAC}</ProjectGuid>
     <OutputType>Exe</OutputType>
-    <AppDesignerFolder>Properties</AppDesignerFolder>
-    <RootNamespace>JavaToCSharp</RootNamespace>
-    <AssemblyName>JavaToCSharp</AssemblyName>
-    <TargetFrameworkVersion>v3.0</TargetFrameworkVersion>
-    <FileAlignment>512</FileAlignment>
-    <FileUpgradeFlags>
-    </FileUpgradeFlags>
-    <UpgradeBackupLocation>
-    </UpgradeBackupLocation>
-    <OldToolsVersion>3.5</OldToolsVersion>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
   </PropertyGroup>
-  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
-    <DebugSymbols>true</DebugSymbols>
-    <DebugType>full</DebugType>
-    <Optimize>false</Optimize>
-    <OutputPath>bin\Debug\</OutputPath>
-    <DefineConstants>DEBUG;TRACE</DefineConstants>
-    <ErrorReport>prompt</ErrorReport>
-    <WarningLevel>4</WarningLevel>
-  </PropertyGroup>
-  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
-    <DebugType>pdbonly</DebugType>
-    <Optimize>true</Optimize>
-    <OutputPath>bin\Release\</OutputPath>
-    <DefineConstants>TRACE</DefineConstants>
-    <ErrorReport>prompt</ErrorReport>
-    <WarningLevel>4</WarningLevel>
-  </PropertyGroup>
-  <ItemGroup>
-    <Reference Include="System" />
-    <Reference Include="System.configuration" />
-    <Reference Include="System.Data" />
-    <Reference Include="System.Xml" />
-  </ItemGroup>
-  <ItemGroup>
-    <Compile Include="Configuration\RuleSection.cs" />
-    <Compile Include="Configuration\RuleSectionCollection.cs" />
-    <Compile Include="Configuration\J2CSSection.cs" />
-    <Compile Include="IRule.cs" />
-    <Compile Include="Program.cs" />
-    <Compile Include="Properties\AssemblyInfo.cs" />
-    <Compile Include="RuleEngine.cs" />
-    <Compile Include="Rules\CapitalizeRule.cs" />
-    <Compile Include="Rules\DeleteRule.cs" />
-    <Compile Include="Rules\EquivalentRule.cs" />
-    <Compile Include="Rules\foreachRule.cs" />
-    <Compile Include="Rules\getIndexerRule.cs" />
-    <Compile Include="Rules\OtherRule.cs" />
-    <Compile Include="Rules\RemoveGetRule.cs" />
-    <Compile Include="Rules\skiplineRule.cs" />
-  </ItemGroup>
+
   <ItemGroup>
-    <None Include="App.config" />
+    <PackageReference Include="System.Configuration.ConfigurationManager" Version="8.0.0" />
   </ItemGroup>
-  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
-  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
-       Other similar extension points exist, see Microsoft.Common.targets.
-  <Target Name="BeforeBuild">
-  </Target>
-  <Target Name="AfterBuild">
-  </Target>
-  -->
+
 </Project>
\ No newline at end of file
diff --git a/RuleEngine.cs b/RuleEngine.cs
index 0b109db..3d8379c 100644
--- a/RuleEngine.cs
+++ b/RuleEngine.cs
@@ -3,8 +3,8 @@
 using System.Text;
 using System.IO;
 using System.Reflection;
-using JavaToCSharp.Configuration;
 using System.Configuration;
+using JavaToCSharp.Configuration;
 using JavaToCSharp.Rules;
 
 namespace JavaToCSharp
@@ -30,8 +30,8 @@ public void LoadRules()
             foreach (RuleSection rs in config.Rules)
             {
                 EquivalentRule r = new EquivalentRule(rs.Name);
-                r.Pattern = rs.Pattern;
-                r.Replacement = rs.Replacement;
+                r.PatternValue = rs.Pattern;
+                r.ReplacementValue = rs.Replacement;
                 //Console.WriteLine(r.ToString());
                 AddRule(r);
             }
diff --git a/Rules/EquivalentExceptionRule.cs b/Rules/EquivalentExceptionRule.cs
index c8c6293..b9b0d81 100644
--- a/Rules/EquivalentExceptionRule.cs
+++ b/Rules/EquivalentExceptionRule.cs
@@ -6,7 +6,7 @@ namespace JavaToCSharp.Rules
 {
     public abstract class EquivalentExceptionRule : EquivalentRule
     {
-        protected override sealed string Replacement
+        protected override string Replacement
         {
             get { return this.Pattern; }
         }
@@ -21,7 +21,7 @@ protected override string Pattern
             get { return @"RuntimeException"; }
         }
 
-        public override string ReplaceString(Match match)
+        protected override string ReplaceString(Match match)
         {
             return "Exception";
         }
@@ -35,7 +35,7 @@ protected override string Pattern
             get { return @"ClassCastException"; }
         }
 
-        public override string ReplaceString(Match match)
+        protected override string ReplaceString(Match match)
         {
             return "InvalidCastException";
         }
@@ -49,7 +49,7 @@ protected override string Pattern
             get { return @"UnsupportedEncodingException"; }
         }
 
-        public override string ReplaceString(Match match)
+        protected override string ReplaceString(Match match)
         {
             return "EncoderFallbackException";
         }
@@ -63,7 +63,7 @@ protected override string Pattern
             get { return @"AssertionFailedError"; }
         }
 
-        public override string ReplaceString(Match match)
+        protected override string ReplaceString(Match match)
         {
             return "AssertFailedException";
         }
@@ -77,7 +77,7 @@ protected override string Pattern
             get { return @"IllegalArgumentException"; }
         }
 
-        public override string ReplaceString(Match match)
+        protected override string ReplaceString(Match match)
         {
             return "ArgumentException";
         }
@@ -90,7 +90,7 @@ protected override string Pattern
             get { return @"NumberFormatException"; }
         }
 
-        public override string ReplaceString(Match match)
+        protected override string ReplaceString(Match match)
         {
             return "FormatException";
         }
@@ -103,7 +103,7 @@ protected override string Pattern
             get { return @"IllegalAccessError|IllegalStateException"; }
         }
 
-        public override string ReplaceString(Match match)
+        protected override string ReplaceString(Match match)
         {
             return "InvalidOperationException";
         }
diff --git a/Rules/EquivalentRule.cs b/Rules/EquivalentRule.cs
index c77ed94..89d22fa 100644
--- a/Rules/EquivalentRule.cs
+++ b/Rules/EquivalentRule.cs
@@ -22,18 +22,28 @@ public override string RuleName
             get { return _name; }
         }
 
-        public virtual string Replacement
+        protected virtual string Pattern
         {
             get;
             set;
         }
+
+        public string PatternValue
+        {
+            set { this.Pattern = value; }
+        }
         
-        public virtual string Pattern
+        protected virtual string Replacement
         {
             get;
             set;
         }
 
+        public string ReplacementValue
+        {
+            set { this.Replacement = value; }
+        }
+
         protected virtual string ReplaceString(Match match)
         {
             return this.Replacement;
diff --git a/Rules/OtherRule.cs b/Rules/OtherRule.cs
index 872816e..2444eea 100644
--- a/Rules/OtherRule.cs
+++ b/Rules/OtherRule.cs
@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Configuration;
 using System.Text;
 using System.Text.RegularExpressions;
 
@@ -15,12 +16,12 @@ public override string RuleName
             }
         }
 
-        public override string Pattern
+        protected override string Pattern
         {
             get { return @"org\.apache\.poi\.([a-zA-Z]+)\."; }
         }
 
-        public override string Replacement
+        protected override string Replacement
         {
             get { return "namespace"; }
         }
@@ -40,12 +41,12 @@ public override string RuleName
             }
         }
 
-        public override string Replacement
+        protected override string Replacement
         {
             get { return "new Double"; }
         }
 
-        public override string Pattern
+        protected override string Pattern
         {
             get { return @"new Double\((.+)\)"; }
         }
@@ -57,12 +58,12 @@ protected override string ReplaceString(Match match)
     }
     public class EquivalentRule2 : EquivalentRule
     {
-        public override string Replacement
+        protected override string Replacement
         {
             get { return ".charAt(i)"; }
         }
 
-        public override string Pattern
+        protected override string Pattern
         {
             get { return @"\.charAt\((\w+)\)"; }
         }
@@ -76,12 +77,12 @@ protected override string ReplaceString(Match match)
 
     public class EquivalentRule3 : EquivalentRule
     {
-        public override string Replacement
+        protected override string Replacement
         {
             get { return "read"; }
         }
 
-        public override string Pattern
+        protected override string Pattern
         {
             get { return @"(\s|\.)(read\S)"; }
         }
@@ -108,12 +109,12 @@ public override string RuleName
             get { return "Getter"; }
         }
 
-        public override string Pattern
+        protected override string Pattern
         {
             get { return @"\.get([a-zA-Z0-9]+)\(\)"; }
         }
 
-        public override string ReplaceString(Match match)
+        protected override string ReplaceString(Match match)
         {
             if (exclude.Contains(match.Groups[1].Value))
                 return ".Get" + match.Groups[1].Value + "()";
@@ -136,12 +137,12 @@ public override string RuleName
             get { return "setter"; }
         }
 
-        public override string Pattern
+        protected override string Pattern
         {
             get { return @"\.set([a-zA-Z0-9]+)\((.*?)\)"; }
         }
 
-        public override string ReplaceString(Match match)
+        protected override string ReplaceString(Match match)
         {
             if (exclude.Contains(match.Groups[1].Value))
                 return ".Set" + match.Groups[1].Value + "(" + match.Groups[2].Value + ")";
@@ -156,12 +157,12 @@ public override string RuleName
             get { return "XXXX.class"; }
         }
 
-        public override string Pattern
+        protected override string Pattern
         {
             get { return @"\(([a-zA-Z0-9]+)\.class"; }
         }
 
-        public override string ReplaceString(Match match)
+        protected override string ReplaceString(Match match)
         {
             return "(typeof(" + match.Groups[1].Value + ")";
         }
@@ -174,12 +175,12 @@ public override string RuleName
             get { return "import"; }
         }
 
-        public override string Pattern
+        protected override string Pattern
         {
             get { return @"import\s(.*?)\.([a-zA-Z0-9]+|\*);"; }
         }
 
-        public override string ReplaceString(Match match)
+        protected override string ReplaceString(Match match)
         {
             if (match.Groups[1].Value.StartsWith("junit."))
             {
@@ -199,12 +200,12 @@ public override string RuleName
             get { return "package"; }
         }
 
-        public override string Pattern
+        protected override string Pattern
         {
             get { return @"package\s(.*?);"; }
         }
 
-        public override string ReplaceString(Match match)
+        protected override string ReplaceString(Match match)
         {
             return "namespace " + match.Groups[1].Value + "\r\n{\r\n    using System;";
         }
@@ -217,12 +218,12 @@ public override string RuleName
             get { return "Assert.AreEqual"; }
         }
 
-        public override string Pattern
+        protected override string Pattern
         {
             get { return @"Assert.AreEqual\(("".*?"".*?),(.*?),(.*?)\);"; }
         }
 
-        public override string ReplaceString(Match match)
+        protected override string ReplaceString(Match match)
         {
             return "Assert.AreEqual(" + match.Groups[2].Value + "," + match.Groups[3].Value + "," + match.Groups[1].Value + ");";
         }
@@ -235,12 +236,12 @@ public override string RuleName
             get { return "TestFixture Attribute"; }
         }
 
-        public override string Pattern
+        protected override string Pattern
         {
             get { return @"(.*?)\sclass\s(.*?)Test(.*?)\s{"; }
         }
 
-        public override string ReplaceString(Match match)
+        protected override string ReplaceString(Match match)
         {
             return "    [TestFixture]\r\n    " + match.Groups[1].Value + " class " + match.Groups[2].Value + "Test" + match.Groups[3].Value + "\r\n{";
         }
@@ -253,12 +254,12 @@ public override string RuleName
             get { return "TestMethod Attribute"; }
         }
 
-        public override string Pattern
+        protected override string Pattern
         {
             get { return @"(public.*?)(t|T)est([a-zA-Z0-9_]+)\(\)\s(.*){"; }
         }
 
-        public override string ReplaceString(Match match)
+        protected override string ReplaceString(Match match)
         {
             return "    [Test]\r\n    public void Test" + match.Groups[3].Value + "(){";
         }
@@ -271,12 +272,12 @@ public override string RuleName
             get { return "IXXXX xxx = "; }
         }
 
-        public override string Pattern
+        protected override string Pattern
         {
             get { return @"\s(HSSF)?(Workbook|Sheet|Cell|Row|Name|Header|Footer|CellStyle|CellType)(\s+|\.)(.*?)="; }
         }
 
-        public override string ReplaceString(Match match)
+        protected override string ReplaceString(Match match)
         {
             return " I" + match.Groups[2].Value + match.Groups[3].Value + match.Groups[4].Value + "=";
         }
@@ -292,7 +293,7 @@ public override string RuleName
             }
         }
 
-        public override string Pattern
+        protected override string Pattern
         {
             get
             {
@@ -300,7 +301,7 @@ public override string Pattern
             }
         }
 
-        public override string ReplaceString(Match match)
+        protected override string ReplaceString(Match match)
         {
             return match.Groups[1].Value + match.Groups[2].Value + "1" + match.Groups[3].Value;
         }
@@ -313,12 +314,12 @@ public override string RuleName
             get { return "CapitalizeRule2"; }
         }
 
-        public override string Pattern
+        protected override string Pattern
         {
             get { return @"(\w)\.([a-z])([a-zA-Z_0-9]+?)\("; }
         }
 
-        public override string ReplaceString(Match match)
+        protected override string ReplaceString(Match match)
         {
             return match.Groups[1].Value + "." + match.Groups[2].Value.ToUpper() + match.Groups[3].Value + "(";
         }
diff --git a/Rules/RemoveGetRule.cs b/Rules/RemoveGetRule.cs
index 2b5c5df..8550297 100644
--- a/Rules/RemoveGetRule.cs
+++ b/Rules/RemoveGetRule.cs
@@ -7,12 +7,12 @@ namespace JavaToCSharp.Rules
 {
     public class RemoveGetRule : EquivalentRule
     {
-        public override string Replacement
+        protected override string Replacement
         {
             get { return "GetXXX()"; }
         }
 
-        public override string Pattern
+        protected override string Pattern
         {
             get { return @"Get(FirstRow|Col|XFIndex|Data|LastRow|Column|Sid|Author|TotalSize|Row|FirstColumn|"+
 @"LastColumn|InnerValueEval|Height|Width|StringValue|ExternSheetIndex|Sheet|ColumnIndex|RowIndex)\(\)"; }