xaml - How I can to change background color in Dropdown button in WPF ToolBar? - Stack Overflow
Getting Started with WPF Split Button control | Syncfusion
WPF ComboBox
WPF] Styling The ComboBox with watermark - Microsoft Q&A
Multi Select ComboBox in WPF - CodeProject
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NuGet Gallery | Syncfusion.Shared.WPF 21.2.3
MahApps.Metro - DropDownButton
Andy On WPF, Windows 8 and Beyond: DropDownButtons in WPF
How to Create Popup Button and Dropdownmenu - YouTube
To enable multi-selection, set the ComboBox's ShowCheckBoxes to true. When this property is true, EO.Wpf ComboBox displays a check box in front of each item. User will then be able to check multiple items. The following code demonstrates how to use ...
GitHub - SyncfusionExamples/wpf-dropdown-button-examples: Repository for Dropdown Button samples
DropDownButton Class | WinForms Controls | DevExpress Documentation
ComboBox Elements | ComponentOne Input Library for WPF