Update README.md

Author: syncsiva

README.md

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 # WPF DataGrid Virtual Loading
 Example shows the built-in data virtualization support in WPF DataGrid where it processes the record creations in on-demand for better loading performance. 
 
-In this way, datagrid provides the same loading time for 1K records and 1 million record. You can enable data virtualization in datagrid by setting [EnableDataVirtualization](https://help.syncfusion.com/cr/cref_files/wpf/Syncfusion.SfGrid.WPF~Syncfusion.UI.Xaml.Grid.SfDataGrid~EnableDataVirtualization.html) property.
+In this way, datagrid provides the same loading time for 1K records and 1 million record. You can enable data virtualization in datagrid by setting [EnableDataVirtualization](https://help.syncfusion.com/cr/cref_files/wpf/Syncfusion.SfGrid.WPF~Syncfusion.UI.Xaml.Grid.SfDataGrid~EnableDataVirtualization.html) property. Also, setting [UseDrawing](https://help.syncfusion.com/cr/cref_files/wpf/Syncfusion.SfGrid.WPF~Syncfusion.UI.Xaml.Grid.SfDataGrid~UseDrawing.html) property as `Default` improves the loading and also scrolling performance.
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+In addition to that datagrid provides option to show built-in busy indicator for long running operations by setting [ShowbusyIndicator](https://help.syncfusion.com/cr/cref_files/wpf/Syncfusion.SfGrid.WPF~Syncfusion.UI.Xaml.Grid.SfDataGrid~ShowBusyIndicator.html) as `true` to enhance the user experience.
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+Reference
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+[WPF DataGrid Performance](https://help.syncfusion.com/wpf/sfdatagrid/performance)