How to merge cells in a row in wpf treegrid?

This example explains how to merge cells in a row in wpf treegrid

Note: Supports cell merging from 17.2.0.28 version

Name		Name	Last commit message	Last commit date
Latest commit History 8 Commits
.github/workflows		.github/workflows
Behaviors		Behaviors
Helper		Helper
Model		Model
Properties		Properties
ViewModel		ViewModel
App.config		App.config
App.ico		App.ico
App.xaml		App.xaml
App.xaml.cs		App.xaml.cs
CellMergeDemo_2015.csproj		CellMergeDemo_2015.csproj
CellMergeDemo_2015.sln		CellMergeDemo_2015.sln
MainWindow.xaml		MainWindow.xaml
MainWindow.xaml.cs		MainWindow.xaml.cs
README.md		README.md

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