dotnet/winforms

[DarkMode]The Form1 title bar change to white color when set the RightToLeft to Yes in PropertyGrid control

Open

#12,582 opened on Dec 4, 2024

View on GitHub
 (1 comment) (0 reactions) (1 assignee)C# (4,100 stars) (922 forks)batch import
area-DarkModehelp wanted

Description

.NET version

.NET 10.0.100-alpha.1.24573.1

Did it work in .NET Framework?

No

Did it work in any of the earlier releases of .NET Core or .NET 5+?

No, also repro in .NET 9.0 which it started to be supported.

Issue description

The Form1 title bar change to white color when set the RightToLeft to Yes in PropertyGrid control. Image

Steps to reproduce

Repro steps:

  1. Create a WinForms .NET application with PropertyGrid control
  2. Set PropertyGrid's selectedObject property to Form1
  3. Enable DarkMode by Application.SetColorMode(SystemColorMode.Dark) in Program.cs file
  4. Run the application
  5. In PropertyGrid control, set the RightToLeft property to Yes

More Info:

  1. If repro the issue, then set RightToLeft property to No, the Form1 title bar also be white color.

Contributor guide

Tech stack
csharp
Domain
frontend
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
Familiarity with WinFormsUnderstanding of dark mode themingC# programming
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
50
Research direction
This issue is about a dark mode bug in Windows Forms where setting RightToLeft to Yes in a PropertyGrid causes the Form1 title bar to turn white. The repro steps are clear and include setting dark mode via Application.SetColorMode. The assignee is likely already working on it. To contribute, investigate the WinForms source code, specifically how the PropertyGrid control interacts with the title bar color during RightToLeft property changes. Look for relevant updates in the dark mode theming logic, possibly in the PropertyGrid control or the Form class. Check the existing comments on issue #12582 for any additional insights.
[DarkMode]The Form1 title bar change to white color when set the RightToLeft to Yes in PropertyGrid control · dotnet/winforms#12582 | Good First Issue