ES-975464 - Resolve ReadMe Length Issues in this Repository

Author: SreemonPremkumarM

README.md

@@ -1,3 +1,25 @@
 # how-to-bind-combobox-column-ItemsSource-from-view-model-in-wpf-and-uwp-treegrid-in-mvvm
 
-This example illustrates to bind the ComboBox column ItemsSource using MVVM.
+This example illustrates how to bind the ComboBox column's `ItemsSource` using MVVM in both [WPF TreeGrid](https://www.syncfusion.com/wpf-controls/treegrid) and [UWP TreeGrid](https://www.syncfusion.com/uwp-ui-controls/treegrid)
+
+You can bind the `ItemsSource` from ViewModel to [TreeGridComboBoxColumn](https://help.syncfusion.com/cr/wpf/Syncfusion.UI.Xaml.TreeGrid.TreeGridComboBoxColumn.html) or using `ElementName` binding.
+
+## XAML code:
+
+``` xml
+<syncfusion:TreeGridComboBoxColumn AllowEditing="True" 
+                                   MappingName="Title"
+                                   HeaderText="Title"
+                                   ItemsSource="{Binding DataContext.TitleList,
+                                                                     ElementName=treeGrid}" />
+```
+
+## C# ViewModel:
+``` c#
+private ObservableCollection<string> titleList;
+public ObservableCollection<string> TitleList
+{
+     get { return titleList; }
+     set { titleList = value; }
+}
+```