[Bug]: XML documentation is not propagated to generated members for [Reactive] partial properties and [ReactiveCommand]

[formular2]

Describe the bug 🐞

Hello,

I noticed that XML documentation comments (///

) are not being propagated or inherited correctly when using the Source Generators in specific scenarios.

While XML documentation works correctly when tagging a private field with [Reactive], it fails to appear in IntelliSense for external callers when using:

1. [Reactive] on a partial property.

2. [ReactiveCommand] on a method.

This makes it difficult to provide documentation for the public API of the ViewModels when using these modern syntax styles.

Step to reproduce

Here is a comparison of the scenarios:

public partial class MyViewModel : ReactiveObject
{
    // ✅ SCENARIO 1: Private Field (WORKS)
    // The generated "Title" property correctly shows this summary in IntelliSense.
    /// <summary>
    /// This is the page title. (Visible in IntelliSense)
    /// </summary>
    [Reactive]
    private string _title;

    // ❌ SCENARIO 2: Partial Property (FAILS)
    // The generated implementation does not inherit this summary.
    // External callers see no documentation for "TotalPages".
    /// <summary>
    /// Total number of pages. (NOT Visible in IntelliSense)
    /// </summary>
    [Reactive]
    public partial int TotalPages { get; set; }

    // ❌ SCENARIO 3: ReactiveCommand (FAILS)
    // The generated "SaveCommand" property does not inherit this summary.
    /// <summary>
    /// Saves the current document. (NOT Visible on SaveCommand)
    /// </summary>
    [ReactiveCommand]
    private void Save()
    {
        // Implementation
    }
}

Reproduction repository

https://github.com/reactiveui/ReactiveUI.SourceGenerators

Expected behavior

• For Partial Properties: The generated implementation should ideally inherit the XML documentation (e.g., via ) so that IntelliSense displays the comments defined on the partial definition.

• For ReactiveCommands: The generated PublicCommand property should copy the XML documentation from the annotated private method.

Screenshots 🖼️

No response

IDE

Visual Studio 2022

Operating system

Windows10

Version

Framework: .NET 10; ReactiveUI.SourceGenerators Version: 2.6.1

Device

PC

ReactiveUI Version

No response

Additional information ℹ️

Comparatively, [Reactive] on private fields works as expected. It would be great if partial properties and commands could have consistent behavior regarding documentation.

Thanks for your work on this library!

[ChrisPulman]

Thank you for raising this, I will update the generators to ensure xml documentation provided is applied to the output too.