dnSpy

.NET debugger and assembly editor

Download

• Original discontinued version
• Unofficial revival

Guides

• How to DEBUG Bannerlord
• Read the Game Code with dnSpy

Setup

• Setup video

How to attach dnSpy to Bannerlord and catch the exception

• Launch the Bannerlord launcher (not the game itself!)
• Run dnSpy
• In dnSpy, choose the command Debug - Attach to process...
• Select the process corresponding to Bannerlord, then click Attach to confirm
• If all goes well, you will see a "Running..." status confirming that dnSpy is attached to the Bannerlord process
• Start the game. Play until a critical error occurs
• You will see an error message on the screen

Source with pictures here by LogRaam

Not working breakpoints

In the module's .csproj file make sure you have

<TargetFramework>net472</TargetFramework>

and not

<TargetFramework>net472,netstandard2.0</TargetFramework>

or anything else. Recompile and should be ok.

Crash on the game start

Bad prefix/postfix argument:

    public static void Postfix(MenuCallbackArgs args)

    //should be:

    public static void Postfix()

What is interesting, game runs fine if not dnSpy attached.

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Crash only when attached to the dnSpy.

The cause is RTS Camera mod. Disable it and game will start.

IL Instructions / OpCodes