c# scrollerview滚动到指定元素位置

demo示例为在scrollview中绑定stackpanel，并在其中初始化一些textblock，滚动到指定的textblock

页面

<Window x:Class="WpfApp1.MainWindow"xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"xmlns:d="http://schemas.microsoft.com/expression/blend/2008"xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"xmlns:local="clr-namespace:WpfApp1"mc:Ignorable="d"Title="MainWindow" Height="450" Width="800"><Grid><DockPanel><Button Click="Button_Click" Content="test" DockPanel.Dock="Top"/><ScrollViewer Name="scrollViewer" HorizontalScrollBarVisibility="Visible"><StackPanel Orientation="Horizontal" Name="stackPanel"></StackPanel></ScrollViewer></DockPanel></Grid>
</Window>

滚动相关逻辑

using System.Windows;
using System.Windows.Controls;namespace WpfApp1
{/// <summary>/// Interaction logic for MainWindow.xaml/// </summary>public partial class MainWindow : Window{public MainWindow(){InitializeComponent();for (int i = 0; i < 30; i++){stackPanel.Children.Add(new TextBlock() { Text = i.ToString(), Width = 80 });}}private void Button_Click(object sender, RoutedEventArgs e){var element = stackPanel.Children[20] as FrameworkElement;// 获取元素在ScrollViewer坐标系中的边界Rect elementBounds = element.TransformToVisual(scrollViewer).TransformBounds(new Rect(0, 0,element.ActualWidth,element.ActualHeight));//// 获取ScrollViewer的可见区域//Rect scrollViewport = new Rect(scrollViewer.HorizontalOffset,//                               scrollViewer.VerticalOffset,//                               scrollViewer.ViewportWidth,//                               scrollViewer.ViewportHeight);// 减去当前的滚动偏移，得到相对于滚动区域原点的坐标double scrollableAreaOffsetX = elementBounds.Left + scrollViewer.HorizontalOffset;double scrollableAreaOffsetY = elementBounds.Top + scrollViewer.VerticalOffset;// 或者直接得到相对于滚动区域左上角的坐标Point absoluteScrollPosition = new Point(elementBounds.Left + scrollViewer.HorizontalOffset,elementBounds.Top + scrollViewer.VerticalOffset);//scrollViewer.ScrollToHorizontalOffset(elementBounds.Left);scrollViewer.ScrollToHorizontalOffset(absoluteScrollPosition.X);}}
}