initial commit.

not working

MailAddressVisualizer/.vsextension/string-resources.json

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+{
+  "MailAddressVisualizer.Command1.DisplayName": "Sample Remote Command"
+}

MailAddressVisualizer/ExtensionEntrypoint.cs

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+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.VisualStudio.Extensibility;
+
+namespace MailAddressVisualizer
+{
+    /// <summary>
+    /// Extension entrypoint for the VisualStudio.Extensibility extension.
+    /// </summary>
+    [VisualStudioContribution]
+    internal class ExtensionEntrypoint : Extension
+    {
+        /// <inheritdoc/>
+        public override ExtensionConfiguration ExtensionConfiguration => new()
+        {
+            Metadata = new(
+                    id: "MailAddressVisualizer.3c0400c3-acec-4b09-b561-c11fac7b10a7",
+                    version: this.ExtensionAssemblyVersion,
+                    publisherName: "Publisher name",
+                    displayName: "MailAddressVisualizer",
+                    description: "Extension description"),
+        };
+
+        /// <inheritdoc />
+        protected override void InitializeServices(IServiceCollection serviceCollection)
+        {
+            base.InitializeServices(serviceCollection);
+
+            // You can configure dependency injection here by adding services to the serviceCollection.
+        }
+    }
+}

MailAddressVisualizer/MailAddressDebuggerVisualizerProvider .cs

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+using MailAddressVisualizerSource;
+using Microsoft.VisualStudio.Extensibility.DebuggerVisualizers;
+using Microsoft.VisualStudio.RpcContracts.RemoteUI;
+using System.Net.Mail;
+using System.Threading;
+using System.Threading.Tasks;
+namespace MailAddressVisualizer;
+
+internal class MailAddressDebuggerVisualizerProvider : DebuggerVisualizerProvider
+{
+    public override DebuggerVisualizerProviderConfiguration DebuggerVisualizerProviderConfiguration
+        => new("Mail Address Visualizer", typeof(MailAddress));
+
+    public override async Task<IRemoteUserControl> CreateVisualizerAsync(
+    VisualizerTarget visualizerTarget, CancellationToken cancellationToken)
+    {
+        MailAddressModel? model = await visualizerTarget
+            .ObjectSource
+            .RequestDataAsync<MailAddressModel?>(jsonSerializer: null, CancellationToken.None);
+
+        return await Task.FromResult<IRemoteUserControl>(
+            new MailAddressVisualizerUserControl(model));
+    }
+}

MailAddressVisualizer/MailAddressVisualizer.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+	<PropertyGroup>
+		<TargetFramework>net8.0-windows8.0</TargetFramework>
+		<Nullable>enable</Nullable>
+		<LangVersion>latest</LangVersion>
+		<NeutralLanguage>en-US</NeutralLanguage>
+	</PropertyGroup>
+	<ItemGroup>
+		<PackageReference Include="Microsoft.VisualStudio.Extensibility.Sdk" Version="17.14.40608" PrivateAssets="all" />
+		<PackageReference Include="Microsoft.VisualStudio.Extensibility.Build" Version="17.14.40608" PrivateAssets="all" />
+	</ItemGroup>
+	<ItemGroup>
+		<None Remove="MailAddressVisualizerUserControl.xaml" />
+		<EmbeddedResource Include="MailAddressVisualizerUserControl.xaml" LogicalName="$(RootNamespace).MailAddressVisualizerUserControl.xaml" />
+	</ItemGroup>
+
+	<ItemGroup>
+    <ProjectReference Include="..\MailAddressVisualizerSource\MailAddressVisualizerSource.csproj" />
+  </ItemGroup>
+	<ItemGroup>
+		<Content Include="..\MailAddressVisualizerSource\bin\$(Configuration)\netstandard2.0\MailAddressVisualizerSource.dll" Link="netstandard2.0\MailAddressVisualizerSource.dll" CopyToOutputDirectory="PreserveNewest" />
+	</ItemGroup>
+
+</Project>

MailAddressVisualizer/MailAddressVisualizer.slnx

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+<Solution>
+  <Project Path="../MailAddressVisualizerSource/MailAddressVisualizerSource.csproj" />
+  <Project Path="MailAddressVisualizer.csproj" />
+</Solution>

MailAddressVisualizer/MailAddressVisualizerUserControl .cs

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+using MailAddressVisualizerSource;
+using Microsoft.VisualStudio.Extensibility.UI;
+
+namespace MailAddressVisualizer;
+
+internal class MailAddressVisualizerUserControl : RemoteUserControl
+{
+    public MailAddressVisualizerUserControl(MailAddressModel? model) : base(model)
+    {
+    }
+}

MailAddressVisualizer/MailAddressVisualizerUserControl.xaml

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+<DataTemplate xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
+    <Grid>
+        <Grid.ColumnDefinitions>
+            <ColumnDefinition Width="100"></ColumnDefinition>
+            <ColumnDefinition Width="*"></ColumnDefinition>
+        </Grid.ColumnDefinitions>
+        <Grid.RowDefinitions>
+            <RowDefinition Height="20"></RowDefinition>
+            <RowDefinition Height="20"></RowDefinition>
+        </Grid.RowDefinitions>
+        <TextBlock Text="Display Name" Grid.Column="0" Grid.Row="0" />
+        <TextBlock Text="{Binding DisplayName}" Grid.Column="1" Grid.Row="0" />
+        <TextBlock Text="Email" Grid.Column="0" Grid.Row="1" />
+        <TextBlock Text="{Binding Email}" Grid.Column="1" Grid.Row="1" />
+    </Grid>
+</DataTemplate>