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+++ b/README.md
@@ -1 +1,50 @@
 **[View document in Syncfusion Xamarin Knowledge base](https://www.syncfusion.com/kb/12466/how-to-retain-groups-after-updating-the-itemssource-in-xamarin-forms-listview-using-mvvm)**
+
+## Sample
+
+```xaml
+<StackLayout>
+    <Button Text="Refresh ItemsSource" Command="{Binding RefreshCommand}" HeightRequest="50"/>
+    <syncfusion:SfListView x:Name="listView" ItemSize="60" DataSource="{Binding ListDataSource}" ItemsSource="{Binding ContactsInfo}">
+        <syncfusion:SfListView.ItemTemplate >
+            <DataTemplate>
+                    <code>
+                    . . .
+                    . . .
+                    <code>
+            </DataTemplate>
+        </syncfusion:SfListView.ItemTemplate>
+    </syncfusion:SfListView>
+</StackLayout>
+
+ViewModel.cs:
+
+public Command RefreshCommand { get; set; }
+
+RefreshCommand = new Command(RefreshItemsSource);
+
+private void RefreshItemsSource(object obj)
+{
+    if(ContactsInfo.Count > 0)
+    {
+        ContactsInfo.Clear();
+        ContactsInfo = null;
+    }
+
+    GenerateInfo();
+    ListDataSource.GroupDescriptors.Add(new GroupDescriptor() { PropertyName = "ContactType" });
+}
+
+public void GenerateInfo()
+{
+    Random r = new Random();
+    ContactsInfo = new ObservableCollection<Contacts>();
+    for (int i = 0; i < 30; i++)
+    {
+        var contact = new Contacts(CustomerNames[i], r.Next(720, 799).ToString() + " - " + r.Next(3010, 3999).ToString());
+        contact.ContactImage = ImageSource.FromResource("ListViewXamarin.Images.Image" + r.Next(0, 28) + ".png");
+        contact.ContactType = contactTypes[r.Next(0, 3)];
+        ContactsInfo.Add(contact);
+    }
+}
+```