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

Author: SreemonPremkumarM

README.md

@@ -1,2 +1,44 @@
-# How to customize the style of tree nodes based on its level using converter in wpf treeview?
-This repository describes how to customize the style of tree nodes based on its level using converter in wpf treeview
+# How to customize the style of tree nodes based on its level using converter in WPF TreeView
+
+This repository describes how to customize the style of tree nodes based on its level using converter in [WPF TreeView](https://www.syncfusion.com/wpf-controls/treeview) (SfTreeView).
+
+The TreeView allows you to customize the style of [TreeViewItem](https://help.syncfusion.com/cr/wpf/Syncfusion.UI.Xaml.TreeView.TreeViewItem.html) based on different levels by using [IValueConverter](https://docs.microsoft.com/en-us/dotnet/api/system.windows.data.ivalueconverter?view=netcore-3.1).
+
+#### XAML
+
+``` xml
+<Window.Resources>
+    <local:FontAttributeConverter x:Key="FontAttributeConverter"/>
+</Window.Resources>
+<Window.DataContext>
+    <local:MailFolderViewModel x:Name="viewModel"/>
+</Window.DataContext>
+
+<Grid>
+    <Syncfusion:SfTreeView HorizontalAlignment="Left" ItemTemplateDataContextType="Node"  ItemsSource="{Binding Folders}"  ChildPropertyName="SubFolder" >
+        <Syncfusion:SfTreeView.ItemTemplate>
+            <DataTemplate>
+                <Label  Content="{Binding Content.FolderName}" FontWeight="{Binding Level, Converter={StaticResource FontAttributeConverter}}"
+                FontSize="14"/>
+            </DataTemplate>
+        </Syncfusion:SfTreeView.ItemTemplate>
+    </Syncfusion:SfTreeView>
+</Grid>
+```
+#### C#
+
+``` csharp
+public class FontAttributeConverter : IValueConverter
+{
+    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+    {
+        var level = (int)value;
+        return level == 0 ? FontWeights.Bold : FontWeights.Regular;
+    }
+
+    public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+    {
+        throw new NotImplementedException();
+    }
+}
+```