Dataverse Tools: Decompiler

Read the C# source code of any plugin assembly stored in Dataverse — even when you don't have the original project.

Expand any assembly in the explorer tree to browse its namespaces and types. Click a class to open the decompiled source as a read-only document, right in VS Code. Works on unmanaged assemblies, managed assemblies, and anything else registered in Dataverse.

What You Can Do

• Browse decompiled code for any assembly directly in the explorer tree — expand to see namespaces and types
• Open any class as a read-only document with full C# syntax highlighting
• Works on managed assemblies — you don't need the original project or source files
• On-demand decompilation — assemblies are downloaded and decompiled only when you expand them, not upfront

Getting Started

1. Install this extension and Dataverse Tools: Environments
2. Connect to an environment using the Environments extension
3. In the Dataverse Explorer, expand any assembly — a Code node appears beneath it
4. Expand Code to see namespaces → expand a namespace to see its types → click any type to open the decompiled C#

Browsing Decompiled Code

Assemblies
  MyPlugin  (v1.2.0)
    Plugins  (2)
      ...
    ► Code
        ► MyPlugin
              ► Handlers
                    AccountHandler   → click to open decompiled C#
                    ContactHandler
              MyPlugin.Plugin

The decompiled source opens as a read-only editor tab with the class name in the tab title. You can read, search, and copy from it — but not edit.

Performance note: The decompiler backend starts in the background the first time you expand an assembly. Subsequent types from the same assembly open instantly — the backend stays warm until it idles out.

Settings

Requirements

• VS Code 1.96 or later
• Dataverse Tools: Environments — required for authentication and environment access
• .NET 8 runtime — used by the bundled decompiler backend

Part of Dataverse Tools

This extension is part of the Dataverse Tools suite — a collection of VS Code extensions for Dynamics 365 / Power Platform developers.

Other extensions in the suite:

• Dataverse Tools: Environments — connect and manage environments
• Dataverse Tools: Assemblies — deploy and register plugin assemblies and steps
• Dataverse Tools: Trace Viewer — view and filter plugin trace logs
• Dataverse Tools: FetchXML Builder — build and run FetchXML queries
• Dataverse Tools: Query Analyzer — query Dataverse with SQL
• Dataverse Tools: Workflows — browse and manage process automation
• Dataverse Tools: Web Resources — edit and publish web resources
• Dataverse Tools: Metadata — browse entity schema in the explorer
• Dataverse Tools: Audit Viewer — view audit history for Dataverse records

Acknowledgements

Powered by ILSpy (MIT) for .NET assembly decompilation.