从XAML设置ViewModel的属性

本文介绍了从XAML设置ViewModel的属性的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我有一些 UserControl ，它是 DataContext 绑定到ViewModel，如何通过 XAML 设置ViewModel的属性?有可能吗?

I have some UserControl, It's DataContext is binded to the ViewModel, How to set a ViewModel's property from XAML? Is it possible?

UPD:抱歉，我不太清楚，我正在尝试得到这样的东西:UserControl的DataContext绑定到ViewModel，我需要将ViewModel的属性设置为某种值(例如，UserControl的Width属性).有可能吗?

UPD : Sorry for being not very clear, I'm trying to get something like this : UserControl's DataContext is binded to ViewModel, I need to set ViewModel's property to something (let's say, UserControl's Width property). Is it possible?

UPD2:似乎不可能.我了解TwoWay绑定模式等，我想做的事情-将ViewModel的属性设置为UserControl的属性

UPD2: It seems to be not possible.I know about TwoWay binding mode, etc, thing I wanted to do - to set ViewModel's property to UserControl's one

这个例子应该很清楚

<Set Property={Binding SomePropertyOnViewModel} Value={Binding RelativeSource={RelativeSource Self}, Path=SomePropertyOnUserControl}>

推荐答案

如何从XAML设置ViewModel的属性?有可能吗?"

"How to set a ViewModel's property from XAML? Is it possible?"

所以，看来这是不可能的，最大可以完成-双向绑定，很不幸，这不是我想要的.总而言之，这是一个很糟糕的设计，而不是一个问题

So, that seems to be not possible, max you can accomplish - two-way binding, which is, unfortunately not I wanted. All in all it's rather bad design than a problem