https://learn.microsoft.com/de-de/dotnet/api/system.windows.forms.datagridviewcomboboxcell.displaystyle?view=netframework-4.8.1&viewFallbackFrom=windowsdesktop-10.0
DataGridViewComboBoxCell.DisplayStyle Property (System.Windows.Forms) | Microsoft Learn
Gets or sets a value that determines how the combo box is displayed when it is not in edit mode.
property systemwindows formsmicrosoftlearn