Update README.md

Author: NitheeshkumarThangaraj

README.md

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-# How-to-synchronize-the-trackball-in-multiple-WPF-Charts
+# How to synchronize the trackball in multiple WPF Charts
 This article explains how to synchronize the Trackball in multiple WPF Charts using Syncfusion's SfChart control.Synchronizing the Trackball across multiple charts allows users to view related data points in different charts simultaneously, enhancing the data analysis experience. This is particularly useful when dealing with comparative data spread across multiple series or charts, as it provides a unified interaction mechanism.
 
 # SFChart
@@ -9,6 +9,10 @@ The SfChart is a powerful and flexible charting library designed to render high-
 
 The TrackballBehavior is a useful feature in the SfChart that enables users to display interactive data tooltips when hovering over a chart. It provides detailed information about data points, such as their X and Y values, and can be customized to display additional content as required.
 
+# Output
+![MainWindow 2025-01-02 12-19-29](https://github.com/user-attachments/assets/3e401e8c-b56c-4de5-a6ae-c13c20af52f9)
+
+
 # Troubleshooting
 If you are facing a path too long exception when building this example project, close Visual Studio and rename the repository to short and build the project.