为什么将ScrollViewer.CanContentScroll设置为false会禁用虚拟化 [英] why setting ScrollViewer.CanContentScroll to false disable virtualization

问题描述

正如大多数WPF开发人员所知，将ScrollViewer.CanContentScroll设置为false会禁用虚拟化；请参见图3.但是我想知道它是如何工作的，因为我尝试在将ScrollViewer.CanContentScroll设置为false的同时启用虚拟化.

As most WPF developers know, setting ScrollViewer.CanContentScroll to false will disable virtualization; but I'd like to know how it works, because I try to enable virtualization while setting ScrollViewer.CanContentScroll to false.

推荐答案

"ScrollViewer当前允许两种滚动模式:逐像素平滑滚动(CanContentScroll = false)或逐项逐项滚动(CanContentScroll = true).当前，WPF仅在按项目滚动时支持UI虚拟化.基于项目的滚动也称为物理滚动"，基于项目的滚动也称为逻辑滚动".

"ScrollViewer currently allows two scrolling modes: smooth pixel-by-pixel scrolling (CanContentScroll = false) or discrete item-by-item scrolling (CanContentScroll = true). Currently WPF supports UI virtualization only when scrolling by item. Pixel-based scrolling is also called "physical scrolling" and item-based scrolling is also called "logical scrolling"."

虚拟化需要基于项目的滚动，因此它可以跟踪当前可见的逻辑单元(项目)...将ScrollViewer设置为基于像素的滚动，不再需要逻辑单元的概念，而只有像素！！！

Virtualization requires an item-based scrolling so it can keep track of logical units (items) currently in view... Setting the ScrollViewer to a pixel-based scrolling there is no more concept of logic units but only pixels!!!

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