ES-975464 - Resolve the ReadMe issue in this sample repository

Author: SreemonPremkumarM

README.md

@@ -1,2 +1,89 @@
-# How to bind selected items in wpf treeview?
-This repository describes how to bind selected items in wpf treeview
+# How to bind selected items in WPF TreeView
+
+This repository describes how to bind selected items in WPF TreeView (SfTreeView).
+
+TreeView support to select multiple items through binding the [SelectedItems](https://help.syncfusion.com/cr/wpf/Syncfusion.UI.Xaml.TreeView.SfTreeView.html#Syncfusion_UI_Xaml_TreeView_SfTreeView_SelectedItems) property from view model with `ObservableCollection<object>` type.
+
+#### XAML
+
+``` xml
+<syncfusion:SfTreeView 
+            x:Name="sfTreeView"
+            SelectionMode="Multiple"
+            SelectedItems="{Binding SelectedNodes}"   
+            ChildPropertyName="Models"
+            ItemsSource="{Binding Items}" >
+</syncfusion:SfTreeView>
+```
+
+#### C#
+
+``` csharp
+sfTreeView.SelectionMode = SelectionMode.Multiple;
+sfTreeView.SetBinding(SfTreeView.SelectedItemsProperty, new Binding("SelectedNodes"));
+```
+
+``` csharp
+public class ViewModel : NotificationObject
+{
+    public ObservableCollection<Model> Items { get; set; }
+
+    public ObservableCollection<object> SelectedNodes { get; set; }
+    public ViewModel()
+    {
+        Items = new ObservableCollection<Model>();
+        SelectedNodes = new ObservableCollection<object>();
+                 
+        var country1 = new Model { State = "Australia" };
+        var country2 = new Model { State = "Brazil" };
+        var country3 = new Model { State = "China" };
+        var country4 = new Model { State = "France" };            
+
+        var aus_state1 = new Model { State = "New South Wales" };
+        var aus_state2 = new Model { State = "Victoria" };
+        var aus_state3 = new Model { State = "South Autralia" };
+        var aus_state4 = new Model { State = "Western Australia" };
+
+        var brazil_state1 = new Model { State = "Parana" };
+        var brazil_state2 = new Model { State = "Ceara" };
+        var brazil_state3 = new Model { State = "Acre" };
+
+        var china_state1 = new Model { State = "Guangzhou" };
+        var china_state2 = new Model { State = "Shanghai" };
+        var china_state3 = new Model { State = "Beijing" };
+        var china_state4 = new Model { State = "Shantou" };
+
+        var france_state1 = new Model { State = "Pays de la Loire" };
+        var france_state2 = new Model { State = "Aquitaine" };
+        var france_state3 = new Model { State = "Brittany" };
+        var france_state4 = new Model { State = "Lorraine" };
+      
+        country1.Models.Add(aus_state1);
+        country1.Models.Add(aus_state2);
+        country1.Models.Add(aus_state3);
+        country1.Models.Add(aus_state4);
+
+        country2.Models.Add(brazil_state1);
+        country2.Models.Add(brazil_state2);
+        country2.Models.Add(brazil_state3);
+
+        country3.Models.Add(china_state1);
+        country3.Models.Add(china_state2);
+        country3.Models.Add(china_state3);
+        country3.Models.Add(china_state4);
+
+        country4.Models.Add(france_state1);
+        country4.Models.Add(france_state2);
+        country4.Models.Add(france_state3);
+        country4.Models.Add(france_state4);
+
+        Items.Add(country1);
+        Items.Add(country2);
+        Items.Add(country3);
+        Items.Add(country4);
+
+        SelectedNodes.Add(aus_state1);
+        SelectedNodes.Add(aus_state2);
+    }        
+}
+```