Resize the border slowly slowly not suddenly after 2 second in wpf with c#

Hi,

We have to apply storyboard animation for Border as below,

           
               
                   
                   
               
               
               
           
       
       
           
               
               
           
       

  this.Loaded += new RoutedEventHandler(MainPage_Loaded);

  void MainPage_Loaded(object sender, RoutedEventArgs e)
        {
            this.borsoryboard.Begin();
        }

Please see attached file.

Hope this will help you.

Thanks.