WPF：为什么 MediaElement 不播放？
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WPF: Why MediaElement does not play?
提问by oshrat shabtai
I want to display video. I want the video will play with a click on button. The video does not play. I put the video into the project.
我想显示视频。我希望视频将通过单击按钮播放。视频不播放。我把视频放到了项目中。
I want that the video source will be YouTube.
我希望视频源是 YouTube。
My XAML code is:
我的 XAML 代码是：
<Window x:Class="MediaElementApp.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="467.91" Width="1300">
<Grid>
<MediaElement x:Name="mediaElement" HorizontalAlignment="Left" Height="418" Margin="246,10,0,0" VerticalAlignment="Top" Width="1036" LoadedBehavior="Manual" UnloadedBehavior="Stop" Source="Images\Wildlife.wmv" />
<Button x:Name="play" HorizontalAlignment="Left" Margin="538,161,0,0" VerticalAlignment="Top" Width="100" Height="84" Click="play_Click" >
<Button.Background>
<ImageBrush ImageSource="Images/smiley.jpg"/>
</Button.Background>
</Button>
</Grid>
c# code:
代码：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
namespace MediaElementApp
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
private void play_Click(object sender, RoutedEventArgs e)
{
mediaElement.Play();
}
}
}
I would like for help.
我想寻求帮助。
采纳答案by Joe B
the media source should be from your file system example
媒体源应该来自您的文件系统示例
mediaElement.Source = new Uri(@"C:\User\Admin\Images\Wildlife.wmv")
回答by A. Lartey
Yes, Joe B is right. Another approach is to use the code behind method indicated below but this demands to place the media file in a subfolder within the application.
是的，乔 B 是对的。另一种方法是使用下面指出的代码隐藏方法，但这需要将媒体文件放在应用程序内的子文件夹中。
var videoPath = Directory.GetCurrentDirectory();
mediaElement.Source = new Uri(videoPath + @"\Images\Wildlife.wmv", UriKind.Relative);
mediaElement.Play();
