将MedialElement从视图(xaml)绑定到ViewModel的属性 [英] Binding MedialElement from the view (xaml) to a ViewModel's property

问题描述

我正在尝试将Mainl.xaml的medialElement绑定到ViewModel的属性. 在MainViewModel.cs中，我们会找到

I'm trying to make a binding of a medialElement from MainView.xaml to a ViewModel's proprety. in MainViewModel.cs we would find

#region Media
private MediaElement media;
    public MediaElement Media
    {
        get
        {
            return media;
        }
        set
        {
            if (value == media)
                return;
            media = value;
            OnPropertyChanged("Media");
        }
    }
    #endregion

我想知道要在MainView.xaml中放入什么来进行绑定.

I would like to know what to put in the MainView.xaml to do the binding.

我知道，如果它是文本框，我会写

I know that if it were a TextBox I would write

`<TextBox Text="{Binding BGToSet, UpdateSourceTrigger=PropertyChanged, Mode=TwoWay}" />`

但是我应该对MediaElement做什么? 我现在这样做:

But what should i do for MediaElement ? i now do this :

`<MediaElement  VerticalAlignment="Center" Width="700" LoadedBehavior="Manual" Height="450" Stretch="Fill"  MediaOpened="{ Binding mediaMediaOpenedCommand}" >

` 非常感谢您的回答！对不起我的英语不好.我也是WPF的新手

` Thanks a lot for your answer !! Sorry for my english. i'm also new in WPF

推荐答案

您应该公开要显示的媒体源的Uri而不是MediaElement:

You should either expose Uri of media source you want to show instead of MediaElement:

public Uri MediaSource { get { /* ... */ } set { /* ... */ } }

<MediaElement Source="{Binding MediaSource}" />

或使用ContentControl(或ContentPresenter)显示MediaElement本身:

or use ContentControl (or ContentPresenter) to show MediaElement itself:

<ContentControl Content="{Binding Media}" />

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