C# 在WPF中,如何滚动到FlowDocumentScrollViewer的底部?
普通的ScrollViewer似乎有一种方法可以实现这一点。FlowDocumentScrollViewer不支持。那么我如何将FlowDocumentScrollViewer设置到底部。您可以从FlowDocumentScrollViewer访问scrollviewer。下面是一个例子C# 在WPF中,如何滚动到FlowDocumentScrollViewer的底部?,c#,wpf,visual-studio,xaml,C#,Wpf,Visual Studio,Xaml,普通的ScrollViewer似乎有一种方法可以实现这一点。FlowDocumentScrollViewer不支持。那么我如何将FlowDocumentScrollViewer设置到底部。您可以从FlowDocumentScrollViewer访问scrollviewer。下面是一个例子 private void MainWindow_Loaded(object sender, RoutedEventArgs e) { var scrollViewer = FindSc
private void MainWindow_Loaded(object sender, RoutedEventArgs e)
{
var scrollViewer = FindScrollViewer(flowDocumentScrollViewer);
scrollViewer.ScrollToBottom();
}
public static ScrollViewer FindScrollViewer(FlowDocumentScrollViewer flowDocumentScrollViewer)
{
if (VisualTreeHelper.GetChildrenCount(flowDocumentScrollViewer) == 0)
{
return null;
}
// Border is the first child of first child of a ScrolldocumentViewer
DependencyObject firstChild = VisualTreeHelper.GetChild(flowDocumentScrollViewer, 0);
if (firstChild == null)
{
return null;
}
Decorator border = VisualTreeHelper.GetChild(firstChild, 0) as Decorator;
if (border == null)
{
return null;
}
return border.Child as ScrollViewer;
}
或者,您可以使用提供的答案,搜索ScrollViewer:
public static void ScrollToEnd(FlowDocumentScrollViewer fdsv)
{
ScrollViewer sc = FindVisualChildren<ScrollViewer>(fdsv).First() as ScrollViewer;
if (sc != null)
sc.ScrollToEnd();
}
public static IEnumerable<T> FindVisualChildren<T>(DependencyObject depObj) where T : DependencyObject
{
if (depObj != null)
{
for (int i = 0; i < VisualTreeHelper.GetChildrenCount(depObj); i++)
{
DependencyObject child = VisualTreeHelper.GetChild(depObj, i);
if (child != null && child is T)
{
yield return (T)child;
}
foreach (T childOfChild in FindVisualChildren<T>(child))
{
yield return childOfChild;
}
}
}
}
公共静态无效滚动结束(FlowDocumentScrollViewer fdsv)
{
ScrollViewer sc=FindVisualChildren(fdsv).First()作为ScrollViewer;
如果(sc!=null)
sc.ScrollToEnd();
}
公共静态IEnumerable FindVisualChildren(DependencyObject depObj),其中T:DependencyObject
{
if(depObj!=null)
{
for(int i=0;i
好吧,那当然行。这样做是标准做法,还是您通常不想滚动到flowdocumentscrollviewer的底部?这是一种未公开的函数实用方法。我觉得用这个没什么问题。