diff --git a/vs4win/Chapter06/Chapter06.sln b/vs4win/Chapter06/Chapter06.sln
index d5411da..cd3c807 100644
--- a/vs4win/Chapter06/Chapter06.sln
+++ b/vs4win/Chapter06/Chapter06.sln
@@ -11,7 +11,9 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "NullHandling", "NullHandlin
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "CodeAnalyzing", "CodeAnalyzing\CodeAnalyzing.csproj", "{2E477494-6458-437D-8CB7-A1803A64786C}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Ch06Ex02Inheritance", "Ch06Ex02Inheritance\Ch06Ex02Inheritance.csproj", "{BE4C568B-3904-42DA-8F46-14E0F76E7BED}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Ch06Ex02Inheritance", "Ch06Ex02Inheritance\Ch06Ex02Inheritance.csproj", "{BE4C568B-3904-42DA-8F46-14E0F76E7BED}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "WarningsAsErrors", "WarningsAsErrors\WarningsAsErrors.csproj", "{F1DE0C2A-4988-46B8-AC6B-BF9E82F27E59}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -39,6 +41,10 @@ Global
 		{BE4C568B-3904-42DA-8F46-14E0F76E7BED}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{BE4C568B-3904-42DA-8F46-14E0F76E7BED}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{BE4C568B-3904-42DA-8F46-14E0F76E7BED}.Release|Any CPU.Build.0 = Release|Any CPU
+		{F1DE0C2A-4988-46B8-AC6B-BF9E82F27E59}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{F1DE0C2A-4988-46B8-AC6B-BF9E82F27E59}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{F1DE0C2A-4988-46B8-AC6B-BF9E82F27E59}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{F1DE0C2A-4988-46B8-AC6B-BF9E82F27E59}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
diff --git a/vs4win/Chapter06/WarningsAsErrors/Program.cs b/vs4win/Chapter06/WarningsAsErrors/Program.cs
new file mode 100644
index 0000000..457d860
--- /dev/null
+++ b/vs4win/Chapter06/WarningsAsErrors/Program.cs
@@ -0,0 +1,9 @@
+// See https://aka.ms/new-console-template for more information
+Console.Write("Enter a name: ");
+string? name = Console.ReadLine();
+if (name == null)
+{
+  Console.WriteLine("You did not enter a name.");
+  return;
+}
+Console.WriteLine($"Hello, {name} has {name.Length} characters!");
diff --git a/vs4win/Chapter06/WarningsAsErrors/WarningsAsErrors.csproj b/vs4win/Chapter06/WarningsAsErrors/WarningsAsErrors.csproj
new file mode 100644
index 0000000..f7b91d5
--- /dev/null
+++ b/vs4win/Chapter06/WarningsAsErrors/WarningsAsErrors.csproj
@@ -0,0 +1,11 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net7.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
+  </PropertyGroup>
+
+</Project>
diff --git a/vscode/Chapter06/Chapter06.code-workspace b/vscode/Chapter06/Chapter06.code-workspace
index 2ddc5b7..c7d5086 100644
--- a/vscode/Chapter06/Chapter06.code-workspace
+++ b/vscode/Chapter06/Chapter06.code-workspace
@@ -12,6 +12,9 @@
 		{
 			"path": "CodeAnalyzing"
 		},
+		{
+			"path": "WarningsAsErrors"
+		},
 		{
 			"path": "Ch06Ex02Inheritance"
 		}
diff --git a/vscode/Chapter06/WarningsAsErrors/Program.cs b/vscode/Chapter06/WarningsAsErrors/Program.cs
new file mode 100644
index 0000000..457d860
--- /dev/null
+++ b/vscode/Chapter06/WarningsAsErrors/Program.cs
@@ -0,0 +1,9 @@
+// See https://aka.ms/new-console-template for more information
+Console.Write("Enter a name: ");
+string? name = Console.ReadLine();
+if (name == null)
+{
+  Console.WriteLine("You did not enter a name.");
+  return;
+}
+Console.WriteLine($"Hello, {name} has {name.Length} characters!");
diff --git a/vscode/Chapter06/WarningsAsErrors/WarningsAsErrors.csproj b/vscode/Chapter06/WarningsAsErrors/WarningsAsErrors.csproj
new file mode 100644
index 0000000..f7b91d5
--- /dev/null
+++ b/vscode/Chapter06/WarningsAsErrors/WarningsAsErrors.csproj
@@ -0,0 +1,11 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net7.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
+  </PropertyGroup>
+
+</Project>