From c0d4d11b545ebe6965e740369ebf0202e8f04d09 Mon Sep 17 00:00:00 2001
From: Mark J Price <markjprice@gmail.com>
Date: Mon, 28 Feb 2022 20:09:20 +0000
Subject: [PATCH] Initial commit

---
 .../AssembliesAndNamespaces.csproj            |  24 ++++++++
 .../AssembliesAndNamespaces/Program.cs        |  53 ++++++++++++++++++
 vs4win/Chapter07/Chapter07.sln                |  43 ++++++++++++++
 vs4win/Chapter07/ControlSDK/Class1.cs         |   5 ++
 vs4win/Chapter07/ControlSDK/ControlSDK.csproj |   9 +++
 vs4win/Chapter07/ControlSDK/global.json       |   5 ++
 .../DotNetEverywhere/DotNetEverywhere.csproj  |  17 ++++++
 vs4win/Chapter07/DotNetEverywhere/Program.cs  |  21 +++++++
 .../DotNetEverywhere/build-all-platforms.ps1  |   5 ++
 .../SharedLibrary/SharedLibrary.csproj        |  37 ++++++++++++
 .../SharedLibrary/StringExtensions.cs         |  26 +++++++++
 .../packt-csdotnet-sharedlibrary.png          | Bin 0 -> 24437 bytes
 .../AssembliesAndNamespaces.csproj            |  24 ++++++++
 .../AssembliesAndNamespaces/Program.cs        |  53 ++++++++++++++++++
 vscode/Chapter07/Chapter07.code-workspace     |  16 ++++++
 vscode/Chapter07/ControlSDK/Class1.cs         |   5 ++
 vscode/Chapter07/ControlSDK/ControlSDK.csproj |   9 +++
 vscode/Chapter07/ControlSDK/global.json       |   5 ++
 .../DotNetEverywhere/DotNetEverywhere.csproj  |  17 ++++++
 vscode/Chapter07/DotNetEverywhere/Program.cs  |  21 +++++++
 .../DotNetEverywhere/build-all-platforms.ps1  |   5 ++
 .../SharedLibrary/SharedLibrary.csproj        |  37 ++++++++++++
 .../SharedLibrary/StringExtensions.cs         |  26 +++++++++
 .../packt-csdotnet-sharedlibrary.png          | Bin 0 -> 24437 bytes
 24 files changed, 463 insertions(+)
 create mode 100644 vs4win/Chapter07/AssembliesAndNamespaces/AssembliesAndNamespaces.csproj
 create mode 100644 vs4win/Chapter07/AssembliesAndNamespaces/Program.cs
 create mode 100644 vs4win/Chapter07/Chapter07.sln
 create mode 100644 vs4win/Chapter07/ControlSDK/Class1.cs
 create mode 100644 vs4win/Chapter07/ControlSDK/ControlSDK.csproj
 create mode 100644 vs4win/Chapter07/ControlSDK/global.json
 create mode 100644 vs4win/Chapter07/DotNetEverywhere/DotNetEverywhere.csproj
 create mode 100644 vs4win/Chapter07/DotNetEverywhere/Program.cs
 create mode 100644 vs4win/Chapter07/DotNetEverywhere/build-all-platforms.ps1
 create mode 100644 vs4win/Chapter07/SharedLibrary/SharedLibrary.csproj
 create mode 100644 vs4win/Chapter07/SharedLibrary/StringExtensions.cs
 create mode 100644 vs4win/Chapter07/SharedLibrary/packt-csdotnet-sharedlibrary.png
 create mode 100644 vscode/Chapter07/AssembliesAndNamespaces/AssembliesAndNamespaces.csproj
 create mode 100644 vscode/Chapter07/AssembliesAndNamespaces/Program.cs
 create mode 100644 vscode/Chapter07/Chapter07.code-workspace
 create mode 100644 vscode/Chapter07/ControlSDK/Class1.cs
 create mode 100644 vscode/Chapter07/ControlSDK/ControlSDK.csproj
 create mode 100644 vscode/Chapter07/ControlSDK/global.json
 create mode 100644 vscode/Chapter07/DotNetEverywhere/DotNetEverywhere.csproj
 create mode 100644 vscode/Chapter07/DotNetEverywhere/Program.cs
 create mode 100644 vscode/Chapter07/DotNetEverywhere/build-all-platforms.ps1
 create mode 100644 vscode/Chapter07/SharedLibrary/SharedLibrary.csproj
 create mode 100644 vscode/Chapter07/SharedLibrary/StringExtensions.cs
 create mode 100644 vscode/Chapter07/SharedLibrary/packt-csdotnet-sharedlibrary.png

diff --git a/vs4win/Chapter07/AssembliesAndNamespaces/AssembliesAndNamespaces.csproj b/vs4win/Chapter07/AssembliesAndNamespaces/AssembliesAndNamespaces.csproj
new file mode 100644
index 0000000..f2fea01
--- /dev/null
+++ b/vs4win/Chapter07/AssembliesAndNamespaces/AssembliesAndNamespaces.csproj
@@ -0,0 +1,24 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net7.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+	<ItemGroup>
+		<Using Include="System.Console" Static="true" />
+	</ItemGroup>
+
+	<ItemGroup>
+		<Using Remove="System" />
+	</ItemGroup>
+
+	<ItemGroup>
+	  <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
+		<PackageReference Include="packt.csdotnet.sharedlibrary" Version="7.0.0" />
+		<PackageReference Include="dialectsoftware.collections.matrix" Version="1.0.0" />
+	</ItemGroup>
+
+</Project>
diff --git a/vs4win/Chapter07/AssembliesAndNamespaces/Program.cs b/vs4win/Chapter07/AssembliesAndNamespaces/Program.cs
new file mode 100644
index 0000000..79758b2
--- /dev/null
+++ b/vs4win/Chapter07/AssembliesAndNamespaces/Program.cs
@@ -0,0 +1,53 @@
+using System.Xml.Linq; // XDocument
+using System; // String
+using Packt.Shared; // IsValidHex(), IsValidXmlTag(), IsValidPassword()
+using DialectSoftware.Collections;
+using DialectSoftware.Collections.Generics;
+
+XDocument doc = new();
+
+string s1 = "Hello";
+String s2 = "World";
+WriteLine($"{s1} {s2}");
+
+Write("Enter a color value in hex: ");
+string? hex = ReadLine(); // or "00ffc8"
+WriteLine("Is {0} a valid color value? {1}",
+  arg0: hex, arg1: hex.IsValidHex());
+
+Write("Enter a XML element: ");
+string? xmlTag = ReadLine(); // or "<h1 class=\"<\" />"
+WriteLine("Is {0} a valid XML element? {1}",
+  arg0: xmlTag, arg1: xmlTag.IsValidXmlTag());
+
+Write("Enter a password: ");
+string? password = ReadLine(); // or "secretsauce"
+WriteLine("Is {0} a valid password? {1}",
+  arg0: password, arg1: password.IsValidPassword());
+
+Axis x = new("x", 0, 10, 1);
+Axis y = new("y", 0, 4, 1);
+Matrix<long> matrix = new(new[] { x, y });
+
+for (int i = 0; i < matrix.Axes[0].Points.Length; i++)
+{
+  matrix.Axes[0].Points[i].Label = "x" + i.ToString();
+}
+
+for (int i = 0; i < matrix.Axes[1].Points.Length; i++)
+{
+  matrix.Axes[1].Points[i].Label = "y" + i.ToString();
+}
+
+foreach (long[] c in matrix)
+{
+  matrix[c] = c[0] + c[1];
+}
+
+foreach (long[] c in matrix)
+{
+  WriteLine("{0},{1} ({2},{3}) = {4}",
+    matrix.Axes[0].Points[c[0]].Label,
+    matrix.Axes[1].Points[c[1]].Label,
+    c[0], c[1], matrix[c]);
+}
diff --git a/vs4win/Chapter07/Chapter07.sln b/vs4win/Chapter07/Chapter07.sln
new file mode 100644
index 0000000..bd61759
--- /dev/null
+++ b/vs4win/Chapter07/Chapter07.sln
@@ -0,0 +1,43 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.2.32210.308
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "AssembliesAndNamespaces", "AssembliesAndNamespaces\AssembliesAndNamespaces.csproj", "{4FD636C5-91F6-46AC-97B7-2396F11A31A8}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SharedLibrary", "SharedLibrary\SharedLibrary.csproj", "{EDEB4531-EE20-440B-BB41-84CDA5715BA7}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "DotNetEverywhere", "DotNetEverywhere\DotNetEverywhere.csproj", "{7509E104-A3AE-4AEB-9656-D83A15D5CD70}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ControlSDK", "ControlSDK\ControlSDK.csproj", "{76808C33-E138-4170-9621-122C1993B36E}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{4FD636C5-91F6-46AC-97B7-2396F11A31A8}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{4FD636C5-91F6-46AC-97B7-2396F11A31A8}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{4FD636C5-91F6-46AC-97B7-2396F11A31A8}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{4FD636C5-91F6-46AC-97B7-2396F11A31A8}.Release|Any CPU.Build.0 = Release|Any CPU
+		{EDEB4531-EE20-440B-BB41-84CDA5715BA7}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{EDEB4531-EE20-440B-BB41-84CDA5715BA7}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{EDEB4531-EE20-440B-BB41-84CDA5715BA7}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{EDEB4531-EE20-440B-BB41-84CDA5715BA7}.Release|Any CPU.Build.0 = Release|Any CPU
+		{7509E104-A3AE-4AEB-9656-D83A15D5CD70}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{7509E104-A3AE-4AEB-9656-D83A15D5CD70}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{7509E104-A3AE-4AEB-9656-D83A15D5CD70}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{7509E104-A3AE-4AEB-9656-D83A15D5CD70}.Release|Any CPU.Build.0 = Release|Any CPU
+		{76808C33-E138-4170-9621-122C1993B36E}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{76808C33-E138-4170-9621-122C1993B36E}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{76808C33-E138-4170-9621-122C1993B36E}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{76808C33-E138-4170-9621-122C1993B36E}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {86EB53C2-864D-4ACE-91FC-C09189FDA62D}
+	EndGlobalSection
+EndGlobal
diff --git a/vs4win/Chapter07/ControlSDK/Class1.cs b/vs4win/Chapter07/ControlSDK/Class1.cs
new file mode 100644
index 0000000..2e304c9
--- /dev/null
+++ b/vs4win/Chapter07/ControlSDK/Class1.cs
@@ -0,0 +1,5 @@
+namespace ControlSDK;
+public class Class1
+{
+
+}
diff --git a/vs4win/Chapter07/ControlSDK/ControlSDK.csproj b/vs4win/Chapter07/ControlSDK/ControlSDK.csproj
new file mode 100644
index 0000000..132c02c
--- /dev/null
+++ b/vs4win/Chapter07/ControlSDK/ControlSDK.csproj
@@ -0,0 +1,9 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>
diff --git a/vs4win/Chapter07/ControlSDK/global.json b/vs4win/Chapter07/ControlSDK/global.json
new file mode 100644
index 0000000..403171d
--- /dev/null
+++ b/vs4win/Chapter07/ControlSDK/global.json
@@ -0,0 +1,5 @@
+{
+  "sdk": {
+    "version": "6.0.200"
+  }
+}
\ No newline at end of file
diff --git a/vs4win/Chapter07/DotNetEverywhere/DotNetEverywhere.csproj b/vs4win/Chapter07/DotNetEverywhere/DotNetEverywhere.csproj
new file mode 100644
index 0000000..4357f26
--- /dev/null
+++ b/vs4win/Chapter07/DotNetEverywhere/DotNetEverywhere.csproj
@@ -0,0 +1,17 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net7.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+		<RuntimeIdentifiers>
+			win10-x64;osx-x64;osx.11.0-arm64;linux-x64;linux-arm64
+		</RuntimeIdentifiers>
+	</PropertyGroup>
+
+	<ItemGroup>
+		<Using Include="System.Console" Static="true" />
+	</ItemGroup>
+
+</Project>
diff --git a/vs4win/Chapter07/DotNetEverywhere/Program.cs b/vs4win/Chapter07/DotNetEverywhere/Program.cs
new file mode 100644
index 0000000..97bee7c
--- /dev/null
+++ b/vs4win/Chapter07/DotNetEverywhere/Program.cs
@@ -0,0 +1,21 @@
+WriteLine("I can run everywhere!");
+WriteLine($"OS Version is {Environment.OSVersion}.");
+
+if (OperatingSystem.IsMacOS())
+{
+  WriteLine("I am macOS.");
+}
+else if (OperatingSystem.IsWindowsVersionAtLeast(major: 10, build: 22000))
+{
+  WriteLine("I am Windows 11.");
+}
+else if (OperatingSystem.IsWindowsVersionAtLeast(major: 10))
+{
+  WriteLine("I am Windows 10.");
+}
+else
+{
+  WriteLine("I am some other mysterious OS.");
+}
+WriteLine("Press ENTER to stop me.");
+ReadLine();
diff --git a/vs4win/Chapter07/DotNetEverywhere/build-all-platforms.ps1 b/vs4win/Chapter07/DotNetEverywhere/build-all-platforms.ps1
new file mode 100644
index 0000000..c75e90a
--- /dev/null
+++ b/vs4win/Chapter07/DotNetEverywhere/build-all-platforms.ps1
@@ -0,0 +1,5 @@
+dotnet publish -c Release -r win10-x64
+dotnet publish -c Release -r osx-x64
+dotnet publish -c Release -r osx.11.0-arm64
+dotnet publish -c Release -r linux-x64
+dotnet publish -c Release -r linux-arm64
\ No newline at end of file
diff --git a/vs4win/Chapter07/SharedLibrary/SharedLibrary.csproj b/vs4win/Chapter07/SharedLibrary/SharedLibrary.csproj
new file mode 100644
index 0000000..49a264c
--- /dev/null
+++ b/vs4win/Chapter07/SharedLibrary/SharedLibrary.csproj
@@ -0,0 +1,37 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>netstandard2.0</TargetFramework>
+		<GeneratePackageOnBuild>true</GeneratePackageOnBuild>
+		<PackageId>Packt.CSdotnet.SharedLibrary</PackageId>
+		<PackageVersion>7.0.0.0</PackageVersion>
+		<Title>C# 11 and .NET 7 Shared Library</Title>
+		<Authors>Mark J Price</Authors>
+		<PackageLicenseExpression>
+			MS-PL
+		</PackageLicenseExpression>
+		<PackageProjectUrl>
+			https://github.com/markjprice/cs11dotnet7
+		</PackageProjectUrl>
+		<PackageIcon>packt-csdotnet-sharedlibrary.png</PackageIcon>
+		<PackageRequireLicenseAcceptance>true</PackageRequireLicenseAcceptance>
+		<PackageReleaseNotes>
+			Example shared library packaged for NuGet.
+		</PackageReleaseNotes>
+		<Description>
+			Three extension methods to validate a string value.
+		</Description>
+		<Copyright>
+			Copyright © 2016-2022 Packt Publishing Limited
+		</Copyright>
+		<PackageTags>string extensions packt csharp dotnet</PackageTags>
+	</PropertyGroup>
+
+	<ItemGroup>
+		<None Include="packt-csdotnet-sharedlibrary.png">
+			<Pack>True</Pack>
+			<PackagePath></PackagePath>
+		</None>
+	</ItemGroup>
+
+</Project>
diff --git a/vs4win/Chapter07/SharedLibrary/StringExtensions.cs b/vs4win/Chapter07/SharedLibrary/StringExtensions.cs
new file mode 100644
index 0000000..72fdffa
--- /dev/null
+++ b/vs4win/Chapter07/SharedLibrary/StringExtensions.cs
@@ -0,0 +1,26 @@
+using System.Text.RegularExpressions;
+
+namespace Packt.Shared
+{
+  public static class StringExtensions
+  {
+    public static bool IsValidXmlTag(this string input)
+    {
+      return Regex.IsMatch(input,
+        @"^<([a-z]+)([^<]+)*(?:>(.*)<\/\1>|\s+\/>)$");
+    }
+
+    public static bool IsValidPassword(this string input)
+    {
+      // minimum of eight valid characters
+      return Regex.IsMatch(input, "^[a-zA-Z0-9_-]{8,}$");
+    }
+
+    public static bool IsValidHex(this string input)
+    {
+      // three or six valid hex number characters
+      return Regex.IsMatch(input,
+        "^#?([a-fA-F0-9]{3}|[a-fA-F0-9]{6})$");
+    }
+  }
+}
diff --git a/vs4win/Chapter07/SharedLibrary/packt-csdotnet-sharedlibrary.png b/vs4win/Chapter07/SharedLibrary/packt-csdotnet-sharedlibrary.png
new file mode 100644
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diff --git a/vscode/Chapter07/AssembliesAndNamespaces/AssembliesAndNamespaces.csproj b/vscode/Chapter07/AssembliesAndNamespaces/AssembliesAndNamespaces.csproj
new file mode 100644
index 0000000..f2fea01
--- /dev/null
+++ b/vscode/Chapter07/AssembliesAndNamespaces/AssembliesAndNamespaces.csproj
@@ -0,0 +1,24 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net7.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+	<ItemGroup>
+		<Using Include="System.Console" Static="true" />
+	</ItemGroup>
+
+	<ItemGroup>
+		<Using Remove="System" />
+	</ItemGroup>
+
+	<ItemGroup>
+	  <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
+		<PackageReference Include="packt.csdotnet.sharedlibrary" Version="7.0.0" />
+		<PackageReference Include="dialectsoftware.collections.matrix" Version="1.0.0" />
+	</ItemGroup>
+
+</Project>
diff --git a/vscode/Chapter07/AssembliesAndNamespaces/Program.cs b/vscode/Chapter07/AssembliesAndNamespaces/Program.cs
new file mode 100644
index 0000000..79758b2
--- /dev/null
+++ b/vscode/Chapter07/AssembliesAndNamespaces/Program.cs
@@ -0,0 +1,53 @@
+using System.Xml.Linq; // XDocument
+using System; // String
+using Packt.Shared; // IsValidHex(), IsValidXmlTag(), IsValidPassword()
+using DialectSoftware.Collections;
+using DialectSoftware.Collections.Generics;
+
+XDocument doc = new();
+
+string s1 = "Hello";
+String s2 = "World";
+WriteLine($"{s1} {s2}");
+
+Write("Enter a color value in hex: ");
+string? hex = ReadLine(); // or "00ffc8"
+WriteLine("Is {0} a valid color value? {1}",
+  arg0: hex, arg1: hex.IsValidHex());
+
+Write("Enter a XML element: ");
+string? xmlTag = ReadLine(); // or "<h1 class=\"<\" />"
+WriteLine("Is {0} a valid XML element? {1}",
+  arg0: xmlTag, arg1: xmlTag.IsValidXmlTag());
+
+Write("Enter a password: ");
+string? password = ReadLine(); // or "secretsauce"
+WriteLine("Is {0} a valid password? {1}",
+  arg0: password, arg1: password.IsValidPassword());
+
+Axis x = new("x", 0, 10, 1);
+Axis y = new("y", 0, 4, 1);
+Matrix<long> matrix = new(new[] { x, y });
+
+for (int i = 0; i < matrix.Axes[0].Points.Length; i++)
+{
+  matrix.Axes[0].Points[i].Label = "x" + i.ToString();
+}
+
+for (int i = 0; i < matrix.Axes[1].Points.Length; i++)
+{
+  matrix.Axes[1].Points[i].Label = "y" + i.ToString();
+}
+
+foreach (long[] c in matrix)
+{
+  matrix[c] = c[0] + c[1];
+}
+
+foreach (long[] c in matrix)
+{
+  WriteLine("{0},{1} ({2},{3}) = {4}",
+    matrix.Axes[0].Points[c[0]].Label,
+    matrix.Axes[1].Points[c[1]].Label,
+    c[0], c[1], matrix[c]);
+}
diff --git a/vscode/Chapter07/Chapter07.code-workspace b/vscode/Chapter07/Chapter07.code-workspace
new file mode 100644
index 0000000..673f955
--- /dev/null
+++ b/vscode/Chapter07/Chapter07.code-workspace
@@ -0,0 +1,16 @@
+{
+	"folders": [
+		{
+			"path": "AssembliesAndNamespaces"
+		},
+		{
+			"path": "SharedLibrary"
+		},
+		{
+			"path": "ControlSDK"
+		},
+		{
+			"path": "DotNetEverywhere"
+		}
+	]
+}
\ No newline at end of file
diff --git a/vscode/Chapter07/ControlSDK/Class1.cs b/vscode/Chapter07/ControlSDK/Class1.cs
new file mode 100644
index 0000000..2e304c9
--- /dev/null
+++ b/vscode/Chapter07/ControlSDK/Class1.cs
@@ -0,0 +1,5 @@
+namespace ControlSDK;
+public class Class1
+{
+
+}
diff --git a/vscode/Chapter07/ControlSDK/ControlSDK.csproj b/vscode/Chapter07/ControlSDK/ControlSDK.csproj
new file mode 100644
index 0000000..132c02c
--- /dev/null
+++ b/vscode/Chapter07/ControlSDK/ControlSDK.csproj
@@ -0,0 +1,9 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>
diff --git a/vscode/Chapter07/ControlSDK/global.json b/vscode/Chapter07/ControlSDK/global.json
new file mode 100644
index 0000000..403171d
--- /dev/null
+++ b/vscode/Chapter07/ControlSDK/global.json
@@ -0,0 +1,5 @@
+{
+  "sdk": {
+    "version": "6.0.200"
+  }
+}
\ No newline at end of file
diff --git a/vscode/Chapter07/DotNetEverywhere/DotNetEverywhere.csproj b/vscode/Chapter07/DotNetEverywhere/DotNetEverywhere.csproj
new file mode 100644
index 0000000..4357f26
--- /dev/null
+++ b/vscode/Chapter07/DotNetEverywhere/DotNetEverywhere.csproj
@@ -0,0 +1,17 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net7.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+		<RuntimeIdentifiers>
+			win10-x64;osx-x64;osx.11.0-arm64;linux-x64;linux-arm64
+		</RuntimeIdentifiers>
+	</PropertyGroup>
+
+	<ItemGroup>
+		<Using Include="System.Console" Static="true" />
+	</ItemGroup>
+
+</Project>
diff --git a/vscode/Chapter07/DotNetEverywhere/Program.cs b/vscode/Chapter07/DotNetEverywhere/Program.cs
new file mode 100644
index 0000000..97bee7c
--- /dev/null
+++ b/vscode/Chapter07/DotNetEverywhere/Program.cs
@@ -0,0 +1,21 @@
+WriteLine("I can run everywhere!");
+WriteLine($"OS Version is {Environment.OSVersion}.");
+
+if (OperatingSystem.IsMacOS())
+{
+  WriteLine("I am macOS.");
+}
+else if (OperatingSystem.IsWindowsVersionAtLeast(major: 10, build: 22000))
+{
+  WriteLine("I am Windows 11.");
+}
+else if (OperatingSystem.IsWindowsVersionAtLeast(major: 10))
+{
+  WriteLine("I am Windows 10.");
+}
+else
+{
+  WriteLine("I am some other mysterious OS.");
+}
+WriteLine("Press ENTER to stop me.");
+ReadLine();
diff --git a/vscode/Chapter07/DotNetEverywhere/build-all-platforms.ps1 b/vscode/Chapter07/DotNetEverywhere/build-all-platforms.ps1
new file mode 100644
index 0000000..c75e90a
--- /dev/null
+++ b/vscode/Chapter07/DotNetEverywhere/build-all-platforms.ps1
@@ -0,0 +1,5 @@
+dotnet publish -c Release -r win10-x64
+dotnet publish -c Release -r osx-x64
+dotnet publish -c Release -r osx.11.0-arm64
+dotnet publish -c Release -r linux-x64
+dotnet publish -c Release -r linux-arm64
\ No newline at end of file
diff --git a/vscode/Chapter07/SharedLibrary/SharedLibrary.csproj b/vscode/Chapter07/SharedLibrary/SharedLibrary.csproj
new file mode 100644
index 0000000..49a264c
--- /dev/null
+++ b/vscode/Chapter07/SharedLibrary/SharedLibrary.csproj
@@ -0,0 +1,37 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>netstandard2.0</TargetFramework>
+		<GeneratePackageOnBuild>true</GeneratePackageOnBuild>
+		<PackageId>Packt.CSdotnet.SharedLibrary</PackageId>
+		<PackageVersion>7.0.0.0</PackageVersion>
+		<Title>C# 11 and .NET 7 Shared Library</Title>
+		<Authors>Mark J Price</Authors>
+		<PackageLicenseExpression>
+			MS-PL
+		</PackageLicenseExpression>
+		<PackageProjectUrl>
+			https://github.com/markjprice/cs11dotnet7
+		</PackageProjectUrl>
+		<PackageIcon>packt-csdotnet-sharedlibrary.png</PackageIcon>
+		<PackageRequireLicenseAcceptance>true</PackageRequireLicenseAcceptance>
+		<PackageReleaseNotes>
+			Example shared library packaged for NuGet.
+		</PackageReleaseNotes>
+		<Description>
+			Three extension methods to validate a string value.
+		</Description>
+		<Copyright>
+			Copyright © 2016-2022 Packt Publishing Limited
+		</Copyright>
+		<PackageTags>string extensions packt csharp dotnet</PackageTags>
+	</PropertyGroup>
+
+	<ItemGroup>
+		<None Include="packt-csdotnet-sharedlibrary.png">
+			<Pack>True</Pack>
+			<PackagePath></PackagePath>
+		</None>
+	</ItemGroup>
+
+</Project>
diff --git a/vscode/Chapter07/SharedLibrary/StringExtensions.cs b/vscode/Chapter07/SharedLibrary/StringExtensions.cs
new file mode 100644
index 0000000..72fdffa
--- /dev/null
+++ b/vscode/Chapter07/SharedLibrary/StringExtensions.cs
@@ -0,0 +1,26 @@
+using System.Text.RegularExpressions;
+
+namespace Packt.Shared
+{
+  public static class StringExtensions
+  {
+    public static bool IsValidXmlTag(this string input)
+    {
+      return Regex.IsMatch(input,
+        @"^<([a-z]+)([^<]+)*(?:>(.*)<\/\1>|\s+\/>)$");
+    }
+
+    public static bool IsValidPassword(this string input)
+    {
+      // minimum of eight valid characters
+      return Regex.IsMatch(input, "^[a-zA-Z0-9_-]{8,}$");
+    }
+
+    public static bool IsValidHex(this string input)
+    {
+      // three or six valid hex number characters
+      return Regex.IsMatch(input,
+        "^#?([a-fA-F0-9]{3}|[a-fA-F0-9]{6})$");
+    }
+  }
+}
diff --git a/vscode/Chapter07/SharedLibrary/packt-csdotnet-sharedlibrary.png b/vscode/Chapter07/SharedLibrary/packt-csdotnet-sharedlibrary.png
new file mode 100644
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