<Window x:Class="videoPlayTest.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:videoPlayTest"
mc:Ignorable="d"
Title="MainWindow" Height="500" Width="525">
<Window.Resources>
<local:ProgressConverter x:Key="PrgConverter"></local:ProgressConverter>
<Style x:Key="btnStyle" TargetType="Button">
<Setter Property="Background">
<Setter.Value>
<LinearGradientBrush StartPoint="0.5,0" EndPoint="0.5,1">
<GradientStop Offset="0" Color="White"/>
<GradientStop Offset="0.5" Color="#FF554D4A"/>
</LinearGradientBrush>
</Setter.Value>
</Setter>
<Setter Property="FontStyle" Value="Italic"/>
<Setter Property="Margin" Value="5"/>
<Setter Property="Width" Value="60"/>
<Setter Property="Foreground" Value="Gold"/>
<Style.Triggers>
<Trigger Property="Button.IsMouseOver" Value="True">
<Setter Property="Foreground" Value="Black"/>
</Trigger>
</Style.Triggers>
</Style>
</Window.Resources>
<Grid>
<StackPanel HorizontalAlignment="Center" Margin="20">
<Border BorderThickness="3" Background="Black">
<Border.BorderBrush>
<LinearGradientBrush StartPoint="0.5,0" EndPoint="0.5,1">
<GradientStop Offset="0" Color="White"/>
<GradientStop Offset="0.5" Color="Gold"/>
</LinearGradientBrush>
</Border.BorderBrush>
<MediaElement Height="300" Width="450" Name="mediaElement"
Volume="0.5" LoadedBehavior="Manual" MediaFailed="mediaElement_MediaFailed"
MouseLeftButtonUp="mediaElement_MouseLeftButtonUp"/>
</Border>
<StackPanel Orientation="Horizontal" Height="40" HorizontalAlignment="Center">
<Button x:Name="openBtn" Content="Open File"
Style="{StaticResource btnStyle}" Click="openBtn_Click"/>
<Button x:Name="playBtn" Content="Play"
Style="{StaticResource btnStyle}" Click="playBtn_Click"/>
<Button x:Name="stopBtn" Content="Stop"
Style="{StaticResource btnStyle}" Click="stopBtn_Click"/>
<Button x:Name="backBtn" Content="Back"
Style="{StaticResource btnStyle}" Click="backBtn_Click"/>
<Button x:Name="forwardBtn" Content="Forward"
Style="{StaticResource btnStyle}" Click="forwardBtn_Click"/>
</StackPanel>
<StackPanel Orientation="Horizontal" HorizontalAlignment="Center" Margin="5">
<TextBlock Text="Volume" Foreground="Gold"/>
<Slider x:Name="volumeSlider" Minimum="0" Maximum="1" Value="0.5" Width="200"/>
<Slider x:Name="sldProgress" Minimum="0" Value="{Binding ElementName=mediaElement, Path=Position, Mode=TwoWay, Converter={StaticResource PrgConverter}}" LargeChange="10" Width="192" />
</StackPanel>
</StackPanel>
</Grid>
</Window>
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;
using Microsoft.Win32;
namespace videoPlayTest
{
/// <summary>
/// MainWindow.xaml 的交互逻辑
/// </summary>
///
public class ProgressConverter : IValueConverter
{
public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
return ((TimeSpan)value).TotalSeconds;
}
public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
return TimeSpan.FromSeconds((double)value);
}
}
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
mediaElement.MediaOpened += MediaElement_MediaOpened;
}
private void MediaElement_Loaded(object sender, RoutedEventArgs e)
{
}
private void MediaElement_MediaOpened(object sender, RoutedEventArgs e)
{
sldProgress.Maximum = mediaElement.NaturalDuration.TimeSpan.TotalSeconds;
}
private void mediaElement_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
PlayerPause();
}
private void openBtn_Click(object sender, RoutedEventArgs e)
{
OpenFileDialog dialog = new OpenFileDialog();
dialog.Filter = "视频文件|*.*";
if (dialog.ShowDialog() == true)
{
mediaElement.Source = new Uri(dialog.FileName, UriKind.RelativeOrAbsolute);
playBtn.IsEnabled = true;
}
}
private void playBtn_Click(object sender, RoutedEventArgs e)
{
PlayerPause();
}
private void stopBtn_Click(object sender, RoutedEventArgs e)
{
}
private void backBtn_Click(object sender, RoutedEventArgs e)
{
mediaElement.Position = mediaElement.Position - TimeSpan.FromSeconds(10);
}
private void forwardBtn_Click(object sender, RoutedEventArgs e)
{
mediaElement.Position = mediaElement.Position + TimeSpan.FromSeconds(10);
}
private void SetPlayer(bool bPlay)
{
backBtn.IsEnabled = bPlay;
forwardBtn.IsEnabled = bPlay;
openBtn.IsEnabled = bPlay;
stopBtn.IsEnabled = bPlay;
playBtn.IsEnabled = bPlay;
}
private void PlayerPause()
{
SetPlayer(true);
if (playBtn.Content.ToString() == "Play")
{
mediaElement.Play();
playBtn.Content = "Pause";
mediaElement.ToolTip = "Click to Pause";
}
else
{
mediaElement.Pause();
playBtn.Content = "Play";
mediaElement.ToolTip = "Click to Play";
}
}
private void mediaElement_MediaFailed(object sender, ExceptionRoutedEventArgs e)
{
int i = 0;
}
}
}
对话框打开文件取绝对路径是没有问题的啊，但感觉视频从来没加载成功过，设置source属性后hasAudio和hasVideo一直是false, failed里面报的是System.Exception {System.IO.FileNotFoundException}，怎么回事
