adding working skeleton of WPF instructions (#111)

* adding working skeleton of WPF instructions

* adding updated readme

* Fixing final newline

* based on code review

Co-authored-by: Matt Soucoup <masoucou@microsoft.com>

---------

Co-authored-by: Matt Soucoup <masoucou@microsoft.com>

README.md

@@ -36,6 +36,7 @@ Team and project-specific instructions to enhance GitHub Copilot's behavior for
 | [DevOps Core Principles](instructions/devops-core-principles.instructions.md) | Foundational instructions covering core DevOps principles, culture (CALMS), and key metrics (DORA) to guide GitHub Copilot in understanding and promoting effective software delivery. | [![Install in VS Code](https://img.shields.io/badge/VS_Code-Install-0098FF?style=flat-square&logo=visualstudiocode&logoColor=white)](https://vscode.dev/redirect?url=vscode%3Achat-instructions%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Finstructions%2Fdevops-core-principles.instructions.md) [![Install in VS Code](https://img.shields.io/badge/VS_Code_Insiders-Install-24bfa5?style=flat-square&logo=visualstudiocode&logoColor=white)](https://insiders.vscode.dev/redirect?url=vscode-insiders%3Achat-instructions%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Finstructions%2Fdevops-core-principles.instructions.md) |
 | [DDD Systems & .NET Guidelines](instructions/dotnet-architecture-good-practices.instructions.md) | DDD and .NET architecture guidelines | [![Install in VS Code](https://img.shields.io/badge/VS_Code-Install-0098FF?style=flat-square&logo=visualstudiocode&logoColor=white)](https://vscode.dev/redirect?url=vscode%3Achat-instructions%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Finstructions%2Fdotnet-architecture-good-practices.instructions.md) [![Install in VS Code](https://img.shields.io/badge/VS_Code_Insiders-Install-24bfa5?style=flat-square&logo=visualstudiocode&logoColor=white)](https://insiders.vscode.dev/redirect?url=vscode-insiders%3Achat-instructions%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Finstructions%2Fdotnet-architecture-good-practices.instructions.md) |
 | [.NET MAUI](instructions/dotnet-maui.instructions.md) | .NET MAUI component and application patterns | [![Install in VS Code](https://img.shields.io/badge/VS_Code-Install-0098FF?style=flat-square&logo=visualstudiocode&logoColor=white)](https://vscode.dev/redirect?url=vscode%3Achat-instructions%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Finstructions%2Fdotnet-maui.instructions.md) [![Install in VS Code](https://img.shields.io/badge/VS_Code_Insiders-Install-24bfa5?style=flat-square&logo=visualstudiocode&logoColor=white)](https://insiders.vscode.dev/redirect?url=vscode-insiders%3Achat-instructions%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Finstructions%2Fdotnet-maui.instructions.md) |
+| [.NET WPF](instructions/dotnet-wpf.instructions.md) | .NET WPF component and application patterns | [![Install in VS Code](https://img.shields.io/badge/VS_Code-Install-0098FF?style=flat-square&logo=visualstudiocode&logoColor=white)](https://vscode.dev/redirect?url=vscode%3Achat-instructions%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Finstructions%2Fdotnet-wpf.instructions.md) [![Install in VS Code](https://img.shields.io/badge/VS_Code_Insiders-Install-24bfa5?style=flat-square&logo=visualstudiocode&logoColor=white)](https://insiders.vscode.dev/redirect?url=vscode-insiders%3Achat-instructions%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Finstructions%2Fdotnet-wpf.instructions.md) |
 | [Genaiscript](instructions/genaiscript.instructions.md) | AI-powered script generation guidelines | [![Install in VS Code](https://img.shields.io/badge/VS_Code-Install-0098FF?style=flat-square&logo=visualstudiocode&logoColor=white)](https://vscode.dev/redirect?url=vscode%3Achat-instructions%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Finstructions%2Fgenaiscript.instructions.md) [![Install in VS Code](https://img.shields.io/badge/VS_Code_Insiders-Install-24bfa5?style=flat-square&logo=visualstudiocode&logoColor=white)](https://insiders.vscode.dev/redirect?url=vscode-insiders%3Achat-instructions%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Finstructions%2Fgenaiscript.instructions.md) |
 | [Generate Modern Terraform Code For Azure](instructions/generate-modern-terraform-code-for-azure.instructions.md) | Guidelines for generating modern Terraform code for Azure | [![Install in VS Code](https://img.shields.io/badge/VS_Code-Install-0098FF?style=flat-square&logo=visualstudiocode&logoColor=white)](https://vscode.dev/redirect?url=vscode%3Achat-instructions%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Finstructions%2Fgenerate-modern-terraform-code-for-azure.instructions.md) [![Install in VS Code](https://img.shields.io/badge/VS_Code_Insiders-Install-24bfa5?style=flat-square&logo=visualstudiocode&logoColor=white)](https://insiders.vscode.dev/redirect?url=vscode-insiders%3Achat-instructions%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Finstructions%2Fgenerate-modern-terraform-code-for-azure.instructions.md) |
 | [Gilfoyle Code Review Instructions](instructions/gilfoyle-code-review.instructions.md) | Gilfoyle-style code review instructions that channel the sardonic technical supremacy of Silicon Valley's most arrogant systems architect. | [![Install in VS Code](https://img.shields.io/badge/VS_Code-Install-0098FF?style=flat-square&logo=visualstudiocode&logoColor=white)](https://vscode.dev/redirect?url=vscode%3Achat-instructions%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Finstructions%2Fgilfoyle-code-review.instructions.md) [![Install in VS Code](https://img.shields.io/badge/VS_Code_Insiders-Install-24bfa5?style=flat-square&logo=visualstudiocode&logoColor=white)](https://insiders.vscode.dev/redirect?url=vscode-insiders%3Achat-instructions%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Finstructions%2Fgilfoyle-code-review.instructions.md) |
@@ -205,4 +206,4 @@ This project may contain trademarks or logos for projects, products, or services
 trademarks or logos is subject to and must follow
 [Microsoft's Trademark & Brand Guidelines](https://www.microsoft.com/en-us/legal/intellectualproperty/trademarks/usage/general).
 Use of Microsoft trademarks or logos in modified versions of this project must not cause confusion or imply Microsoft sponsorship.
-Any use of third-party trademarks or logos are subject to those third-party's policies.
+Any use of third-party trademarks or logos are subject to those third-party's policies.

instructions/dotnet-wpf.instructions.md

@@ -0,0 +1,79 @@
+---
+description: '.NET WPF component and application patterns'
+applyTo: '**/*.xaml, **/*.cs'
+---
+
+## Summary
+
+These instructions guide GitHub Copilot to assist with building high-quality, maintainable, and performant WPF applications using the MVVM pattern. It includes best practices for XAML, data binding, UI responsiveness, and .NET performance.
+
+## Ideal project types
+
+- Desktop applications using C# and WPF
+- Applications following the MVVM (Model-View-ViewModel) design pattern
+- Projects using .NET 8.0 or later
+- UI components built in XAML
+- Solutions emphasizing performance and responsiveness
+
+## Goals
+
+- Generate boilerplate for `INotifyPropertyChanged` and `RelayCommand`
+- Suggest clean separation of ViewModel and View logic
+- Encourage use of `ObservableCollection<T>`, `ICommand`, and proper binding
+- Recommend performance tips (e.g., virtualization, async loading)
+- Avoid tightly coupling code-behind logic
+- Produce testable ViewModels
+
+## Example prompt behaviors
+
+### ✅ Good Suggestions
+- "Generate a ViewModel for a login screen with properties for username and password, and a LoginCommand"
+- "Write a XAML snippet for a ListView that uses UI virtualization and binds to an ObservableCollection"
+- "Refactor this code-behind click handler into a RelayCommand in the ViewModel"
+- "Add a loading spinner while fetching data asynchronously in WPF"
+
+### ❌ Avoid
+- Suggesting business logic in code-behind
+- Using static event handlers without context
+- Generating tightly coupled XAML without binding
+- Suggesting WinForms or UWP approaches
+
+## Technologies to prefer
+- C# with .NET 8.0+
+- XAML with MVVM structure
+- `CommunityToolkit.Mvvm` or custom `RelayCommand` implementations
+- Async/await for non-blocking UI
+- `ObservableCollection`, `ICommand`, `INotifyPropertyChanged`
+
+## Common Patterns to Follow
+- ViewModel-first binding
+- Dependency Injection using .NET or third-party containers (e.g., Autofac, SimpleInjector)
+- XAML naming conventions (PascalCase for controls, camelCase for bindings)
+- Avoiding magic strings in binding (use `nameof`)
+
+## Sample Instruction Snippets Copilot Can Use
+
+```csharp
+public class MainViewModel : ObservableObject
+{
+    [ObservableProperty]
+    private string userName;
+
+    [ObservableProperty]
+    private string password;
+
+    [RelayCommand]
+    private void Login()
+    {
+        // Add login logic here
+    }
+}
+```
+
+```xml
+<StackPanel>
+    <TextBox Text="{Binding UserName, UpdateSourceTrigger=PropertyChanged}" />
+    <PasswordBox x:Name="PasswordBox" />
+    <Button Content="Login" Command="{Binding LoginCommand}" />
+</StackPanel>
+```