一、前言
前两天上峰要求做一个软件使用向导，使用WPF制作。这不，这两天从一张白纸开始学起，做一个播放演示视频的使用向导。以下是粗设计的原型代码：
二、效果图
三、代码
前台代码：
1 <Window
2 xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
3 xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
4 xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
5 xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
6 xmlns:local="clr-namespace:WPF_Nav"
7 xmlns:dxlc="http://schemas.devexpress.com/winfx/2008/xaml/layoutcontrol" xmlns:dxwui="http://schemas.devexpress.com/winfx/2008/xaml/windowsui" x:Class="WPF_Nav.MainWindow"
8 mc:Ignorable="d"
9 Title="MainWindow" Height="480" Width="900" WindowStyle="None">
10 <Grid Name="Main_Grid">
11 <Grid.RowDefinitions>
12 <RowDefinition Height="40"></RowDefinition>
13 <RowDefinition Height="343"></RowDefinition>
14 <RowDefinition Height="30"></RowDefinition>
15 <RowDefinition Height="50"></RowDefinition>
16 </Grid.RowDefinitions>
17 <Grid Name="Title" Grid.Row="0">
18 <Grid.ColumnDefinitions>
19 <ColumnDefinition Width="200"></ColumnDefinition>
20 <ColumnDefinition Width="500"></ColumnDefinition>
21 <ColumnDefinition Width="120"></ColumnDefinition>
22 <ColumnDefinition Width="80"></ColumnDefinition>
23 </Grid.ColumnDefinitions>
24 <Button Grid.Column="3" HorizontalAlignment="Center" Width="40" Height="40" Click="Button_Click" Margin="16,0,0,0" >关闭</Button>
25 </Grid>
26 <Grid Name="Movie" Grid.Row="1">
27 <MediaElement Stretch="Fill" LoadedBehavior="Manual" Name="QS_Movie" MediaOpened="Element_MediaOpened" Loaded="QS_Movie_Loaded" VerticalAlignment="Stretch" HorizontalAlignment="Stretch"></MediaElement>
28 <Button Name="LeftButton" Width="50" Height="50" HorizontalAlignment="Left" VerticalAlignment="Center" Click="Left_Click">上一个</Button>
29 <Button Name="RightButton" Width="50" Height="50" HorizontalAlignment="Right" VerticalAlignment="Center" Click="Right_Click">下一个</Button>
30 </Grid>
31 <Grid Name="Control_Progress" Grid.Row="2">
32 <Slider Height="30" Width="700" Name="timelineSlider" VerticalAlignment="Center" PreviewMouseLeftButtonDown="timelineMDown" PreviewMouseLeftButtonUp="timelineMUp" BorderThickness="0,5,0,0" ></Slider>
33 </Grid>
34 <Grid Name="Movie_Control" Grid.Row="3" Margin="0,0,0,0">
35 <Grid.ColumnDefinitions>
36 <ColumnDefinition Width="200"></ColumnDefinition>
37 <ColumnDefinition Width="500"></ColumnDefinition>
38 <ColumnDefinition Width="50"></ColumnDefinition>
39 <ColumnDefinition Width="150"></ColumnDefinition>
40 </Grid.ColumnDefinitions>
41 <StackPanel Grid.Column="1" Orientation="Horizontal" HorizontalAlignment="Center">
42 <Button Height="40" Width="40" x:Name="Play" Click="Play_Click" Margin="20,0">播放</Button>
43 <Button Height="40" Width="40" x:Name="Pause" Click="Pause_Click" Margin="20,0">暂停</Button>
44 </StackPanel>
45 <Slider Height="25" Width="120" Name="Volunme" Minimum="0" Maximum="1" Value="{Binding ElementName=QS_Movie,Path=Volume,Mode=TwoWay}" Grid.Column="3" HorizontalAlignment="Left" Margin="0,5,0,0" ></Slider>
46 <Button Height="25" Width="40" Name="Horn" Grid.Column="2" HorizontalAlignment="Right" Margin="0,13">音量</Button>
47 </Grid>
48 </Grid>
49 </Window>
后台代码：
1 using System;
2 using System.Collections.Generic;
3 using System.Linq;
4 using System.Text;
5 using System.Threading.Tasks;
6 using System.Windows;
7 using System.Windows.Controls;
8 using System.Windows.Data;
9 using System.Windows.Documents;
10 using System.Windows.Input;
11 using System.Windows.Media;
12 using System.Windows.Media.Imaging;
13 using System.Windows.Navigation;
14 using System.Windows.Shapes;
15 using System.Windows.Threading;
16
17 namespace WPF_Nav
18 {
19 /// <summary>
20 /// MainWindow.xaml 的交互逻辑
21 /// </summary>
22 public partial class MainWindow : Window
23 {
24 DispatcherTimer dispatcherTimer = new System.Windows.Threading.DispatcherTimer(); // 定义一个DT
25 public MainWindow()
26 {
27 InitializeComponent();
28 }
29
30 private void Play_Click(object sender, RoutedEventArgs e)
31 {
32 QS_Movie.Play();
33 }
34
35 private void Pause_Click(object sender, RoutedEventArgs e)
36 {
37 QS_Movie.Pause();
38 }
39
40 private void Element_MediaOpened(object sender, EventArgs e)
41 {
42 timelineSlider.Maximum = QS_Movie.NaturalDuration.TimeSpan.TotalMilliseconds; //设置slider最大值
43 int sec = (int)QS_Movie.NaturalDuration.TimeSpan.TotalSeconds;
44 dispatcherTimer.Tick += new EventHandler(dispatcherTimer_Tick); //超过计时间隔时发生
45 dispatcherTimer.Interval = new TimeSpan(0, 0, 0, 0, 500); //DT间隔
46 dispatcherTimer.Start(); //DT启动
47 }
48
49 private void dispatcherTimer_Tick(object sender, EventArgs e)
50 {
51 timelineSlider.Value = QS_Movie.Position.TotalMilliseconds; //slider滑动值随播放内容位置变化
52 }
53
54 private void timelineMDown(object sender, EventArgs e)
55 {
56 dispatcherTimer.Stop();
57 }
58 private void timelineMUp(object sender, EventArgs e)
59 {
60 QS_Movie.Position = new TimeSpan(0, 0, 0, 0, (int)timelineSlider.Value);
61 dispatcherTimer.Start();
62 QS_Movie.Play();
63 }
64
65 private void QS_Movie_Loaded(object sender, RoutedEventArgs e)
66 {
67 QS_Movie.Source = new Uri(@"E:\Test\WPFTest\Sources\preview.mp4");
68 QS_Movie.Play();
69 System.Threading.Thread.Sleep(500);
70 QS_Movie.Pause();
71 }
72
73 private void Left_Click(object sender, RoutedEventArgs e)
74 {
75 QS_Movie.Source = new Uri(@"E:\Test\WPFTest\Sources\preview1.mp4");
76 QS_Movie.Play();
77 System.Threading.Thread.Sleep(500);
78 QS_Movie.Pause();
79 }
80
81 private void Right_Click(object sender, RoutedEventArgs e)
82 {
83 QS_Movie.Source = new Uri(@"E:\Test\WPFTest\Sources\preview2.mp4");
84 QS_Movie.Play();
85 System.Threading.Thread.Sleep(500);
86 QS_Movie.Pause();
87 }
88
89 private void Button_Click(object sender, RoutedEventArgs e)
90 {
91 this.Close();
92 }
93
94
95
96 }
97
98
99 }
四、小结
刚玩WPF两天，可能有些地方写的不好望见谅，听江湖传言<MediaElement>可能对Win8不支持，我也不清楚，我是Win7的。所以以上代码仅供参考。
PS：使用向导该怎么做？因为公司软件里的按钮都能按F1直接切到官方文档，还有Tooltips自带小视频演示，我这使用向导思来想去还是用视频的方式呈现，但是组长说做的像个播放器，不像使用向导，我是想把软件每步操作都做成视频左右翻页的，确是是像播放器。这可怎么整？求万能的博友指明一条活路！
时间： 2024-10-10 23:07:42