效果：两个DataGrid的滚动条实现同步滚动。
代码参考了博客园chuncn的文章《.net中同步多个ScrollViewer滚动的四种方法》，原文是针对ListBox的。现改为针对DataGrid，略微作了修改，代码以水平滚动条为例。
原文地址：https://www.cnblogs.com/chuncn/archive/2011/10/08/2202175.html
实现方法：
方法一：利用DependencyProperty类的RegisterAttached方法，在属性系统上注册附加属性，并将滚动条属性值HorizontalOffset通过注册属性关联到一个方法。
ScrollViewer sv1, sv2; private void Window_Loaded(object sender, RoutedEventArgs e) { //分别获取两个DataGrid的ScrollViewer
sv1 = VisualTreeHelper.GetChild(VisualTreeHelper.GetChild(this.DataGrid1, 0), 0) as ScrollViewer; sv2 = VisualTreeHelper.GetChild(VisualTreeHelper.GetChild(this.DataGrid2, 0), 0) as ScrollViewer; //将滚动条属性值HorizontalOffset关联到OnScrollChanged1方法
var offsetChangeListener = DependencyProperty.RegisterAttached("ListenerOffset1", typeof(object), typeof(UserControl), new PropertyMetadata(OnScrollChanged1)); var binding = new Binding("HorizontalOffset") { Source = sv1 }; sv1.SetBinding(offsetChangeListener, binding); offsetChangeListener = DependencyProperty.RegisterAttached("ListenerOffset2", typeof(object), typeof(UserControl), new PropertyMetadata(OnScrollChanged2)); binding = new Binding("HorizontalOffset") { Source = sv2 }; sv2.SetBinding(offsetChangeListener, binding); } public void OnScrollChanged1(DependencyObject sender, DependencyPropertyChangedEventArgs e) { double a = (double)e.NewValue; //获取滚动条位置变化后的属性值 sv2.ScrollToHorizontalOffset(a); } public void OnScrollChanged2(DependencyObject sender, DependencyPropertyChangedEventArgs e) { double a = (double)e.NewValue; sv1.ScrollToHorizontalOffset(a); }
方法二：利用滚动条的ScrollChanged事件，同步两个滚动条的位置。
ScrollViewer sv1, sv2;
private void Window_Loaded(object sender, RoutedEventArgs e) { //分别获取两个DataGrid的ScrollViewer sv1 = VisualTreeHelper.GetChild(VisualTreeHelper.GetChild(this.DataGrid1, 0), 0) as ScrollViewer; sv2 = VisualTreeHelper.GetChild(VisualTreeHelper.GetChild(this.DataGrid2, 0), 0) as ScrollViewer; //关联ScrollChanged事件 sv1.ScrollChanged += new ScrollChangedEventHandler(sv1_ScrollChanged); sv2.ScrollChanged += new ScrollChangedEventHandler(sv2_ScrollChanged); } void sv1_ScrollChanged(object sender, ScrollChangedEventArgs e) { sv2.ScrollToHorizontalOffset(sv1.HorizontalOffset); } void sv2_ScrollChanged(object sender, ScrollChangedEventArgs e) { sv1.ScrollToHorizontalOffset(sv2.HorizontalOffset); }
WPF学习笔记（5）：两个DataGrid的滚动条实现同步滚动
原文：https://www.cnblogs.com/lonelyxmas/p/10795367.html