WPF Preprocessor Demo

A minimal example demonstrating how to use C# preprocessor directives with WPF XAML UI variants.

Overview

This project shows how to:

• Use C# preprocessor directives to control code behavior
• Toggle between different XAML UI variants at compile time
• Build the same project with different preprocessor constants

Building

Build original version:

msbuild.exe PreprocessorDemo.csproj

Build with new feature enabled:

msbuild.exe PreprocessorDemo.csproj /p:DefineConstants="fix_issue_001"

Requirements

• Visual Studio 2019
• .NET Framework
• WPF

Notes

• Clean the solution between builds when switching preprocessor directives
• The example shows a simple counter increment (by 1 or 2) with different UI styles
• Uses data binding with BooleanToVisibilityConverter for UI toggling