🛠️dnlib.BAML

The ultimate BAML editor for .NET applications. Edit BAML resources embedded in compiled executables — no source code required.

✨ Features

• Direct BAML Editing – Modify embedded BAML resources without the original XAML files.
• Post-Build Tool – Works on compiled assemblies, fully compatible with obfuscators.
• Targeted Modifications – Change UI elements like Window Titles and TextBlock content effortlessly.
• Memory-Efficient – Reads and writes BAML directly via the powerful dnlib library.
• Cross-Version Support – Works across different .NET framework versions.

💡 What is BAML?

BAML (Binary Application Markup Language) is a compiled, binary representation of XAML used in WPF applications.
It is usually embedded inside a .g.resources file within your .NET assembly.

dnlib.BAML allows you to:

1. Read .baml files from compiled assemblies.
2. Modify UI elements programmatically.
3. Write the edited BAML back into the executable.

This means you can change the UI of any WPF app without needing the original source.

🖼️ How It Works

Inside a compiled assembly:

Assembly
└── Resources
    └── *.g.resources
        ├── Window1.baml
        └── MainPage.baml

Each .baml file corresponds to a XAML file. dnlib.BAML gives you programmatic access to these files for reading, modifying, and saving.

⚙️ Quick Start

Step 1 – Install the Package

Install-Package dnlib.BAML

Step 2 – Usage Example

using dnlib.DotNet;
using dnlib.DotNet.Resources;

using (ModuleDefMD module = ModuleDefMD.Load("WpfApp1.exe"))
{
    if (module.HasGResources()) //Check if exist g.resources
    {
        var gResources = module.gResources(); //Get the g.resources
        foreach (var element in gResources.Elements) //Get the Elements
        {
            var em = gResources.Read(element.Name); //Read the element
            foreach (var record in em.Document) //Edit...
            {
                if (record.Type == BamlRecordType.PropertyWithConverter)
                {
                    PropertyWithConverterRecord pwcr = record as PropertyWithConverterRecord;
                    if (pwcr.Value.ToLower().Contains("window title"))
                    {
                        pwcr.Value = "dnlib.BAML";
                    }
                    else if (pwcr.Value.ToLower().Contains("change my text"))
                    {
                        pwcr.Value = "Coded By Soheil MV.";
                    }
                }
            }
            gResources.Write(em); //Write the element
        }
        module.RemoveGResources(); //Delete the g.resources in the module
        module.Resources.Add(gResources.GetAsEmbeddedResource()); //Add the edited g.resources to the module
    }
}

Explanation:

• Load Assembly: Opens the target .exe.
• Check Resources: Verifies if g.resources exists.
• Edit Elements: Iterates over BAML records and modifies desired values.
• Save Changes: Writes the updated BAML back into the assembly.

📌Credits

• dnlib (Reads and writes .NET assemblies and modules)