---
lang: ja-jp
breaks: true
---
# WinUI 3 Windows の `Theme` テーマ（ライト／ダーク）を取得する 2022-07-27


        ApplicationTheme appTheme = Application.Current.RequestedTheme;
        switch (appTheme)
        {
            case ApplicationTheme.Light:
                ViewModel.Dark_switch = false;
                break;
            case ApplicationTheme.Dark:
                ViewModel.Dark_switch = true;
                break;
        }

###### tags: `WinUI 3` `C#` `Windows 11` `Theme` `ApplicationTheme`