Is your feature request related to a problem? Please describe. Does Avalonia support grouping functionality for ItemsControl or ListBox like in WPF, for example, WPF GroupStyle Describe the solution ...
在DataGrid中使用MultiSelectComboBox作为单元格并设置Star类型的宽度，当DataGrid中存在两行及以上时，添加列后执行ItemsSource.Clear时报System.NullReferenceException错误。 System.NullReferenceException HResult=0x80004003 Message=Object reference ...
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