WPF - TextBlock - 不能重写OnRender [英] WPF - TextBlock - Cannot override OnRender

问题描述

我通过派生TextBlock来创建自定义控件，我的意图是根据一些依赖属性来做一些自定义的渲染。但是，OnRender方法被封装在TextBlock上。虽然我可以通过覆盖OnRenderSizeChanged来完成我的工作，但这是不正确的。任何想法，我怎么能做到这一点正确的方式？

在此先感谢。

解决方案<在WPF中，您通常使用样式或控件模板来更改控件的外观。您可以从微软下载所有控件的模板，并与他们玩。

阅读更多：

a href =http://msdn.microsoft.com/en-us/library/system.windows.controls.controltemplate(v=VS.100).aspx =nofollow noreferrer> http：// msdn。 microsoft.com/en-us/library/system.windows.controls.controltemplate(v=VS.100).aspx

I am creating a custom control by deriving TextBlock, my intention is to do some custom rendering based on some dependency properties. However the OnRender method is sealed on TextBlock. Although I can get my work done by overriding OnRenderSizeChanged, this is not correct. Any ideas on how can i do it the right way?

Thanks in advance.

解决方案

In WPF you normally work with styles or Control templates to change the appearance of a control. You can download templates for all controls from Microsoft and play around with them.

Read more here:

http://msdn.microsoft.com/en-us/library/system.windows.controls.controltemplate(v=VS.100).aspx

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