How to Bind Column ItemsSource from ViewModel in WPF / UWP TreeGrid in MVVM?

This example illustrates how to bind the ComboBox column's ItemsSource using MVVM in WPF TreeGrid / UWP TreeGrid (SfTreeGrid).

You can bind the ItemsSource from ViewModel to TreeGridComboBoxColumn or using ElementName binding.

XAML:

<syncfusion:TreeGridComboBoxColumn AllowEditing="True" 
                                   MappingName="Title"
                                   HeaderText="Title"
                                   ItemsSource="{Binding DataContext.TitleList,
                                                ElementName=treeGrid}" />

C# ViewModel:

private ObservableCollection<string> titleList;

public ObservableCollection<string> TitleList
{
     get { return titleList; }
     set { titleList = value; }
}