WPF 手绘进度条
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话说现在的项目中我要用进度条了。本想用自带的那个ProcessBar控件,可是样式不好看,加上自己本事有限,对WPF中的样式相当的不熟。只好想别的办法了。不知哪根儿神经一动,我想到了用Rectangle控件。知道这个控件的一定就知道我是怎么想的了。具体通过DispatcherTimer类实现。因为这个类有一个Interval属性设置使用的多长时间完成,再加上一个Tick事件,每一毫秒就会触发一下这个Tick事件。当然大多数情况下我们不会这么频繁的触发这个事件。具体就跟实际情况而定了。关于DispatcherTimer类,还是让MSDN来讲吧,http://msdn.microsoft.com/zh-cn/library/system.windows.threading.dispatchertimer.aspx。下面贴出来代码,做一下记录。
XAML代码如下:
- <Window x:Class="ProcessBarTest.MainWindow"
- xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
- xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
- Title="MainWindow" Height="254" Width="525" Loaded="Window_Loaded">
- <Grid Height="218">
- <Rectangle Height="28" HorizontalAlignment="Left" Margin="64,24,0,0" Name="rectangle1" Stroke="Black" VerticalAlignment="Top" Width="0" />
- <Label Content="进度:" Height="28" HorizontalAlignment="Left" Margin="12,26,0,0" Name="label1" VerticalAlignment="Top" />
- <Button Content="开 始" Height="23" HorizontalAlignment="Left" Margin="416,183,0,0" Name="button1" VerticalAlignment="Top" Width="75" Click="button1_Click" />
- <Label Content="0%" Margin="71,24,0,166" Name="label2" HorizontalAlignment="Left" Width="46" />
- <TextBox Height="108" HorizontalAlignment="Left" Margin="12,69,0,0" Name="textBox1" VerticalAlignment="Top" Width="479" TextWrapping="WrapWithOverflow" />
- </Grid>
- </Window>
当然与此相关的当然就是后台代码啦:
- public partial class MainWindow : Window
- {
- private delegate int BrushProcessHandle();
- public MainWindow()
- {
- InitializeComponent();
- }
- Thickness tmpT;
- private void button1_Click(object sender, RoutedEventArgs e)
- {
- this.rectangle1.Width = 0;
- i = 1;
- if (tmpT.Left==0&&tmpT.Top==0&&tmpT.Right==0&&tmpT.Bottom==0)
- {
- tmpT = this.label2.Margin;
- }
- else
- {
- this.label2.Margin = tmpT;
- }
- this.textBox1.Text = "do working...";
- // 注释此句将百分比将会一直在进度条头部显示
- this.label2.Margin = new Thickness(this.label2.Margin.Left - 52, this.label2.Margin.Top, this.label2.Margin.Right, this.label2.Margin.Bottom);
- // 取消注释字体颜色为白色
- //this.label2.Foreground = Brushes.White;
- // 取消注释字体为斜体
- //this.label2.FontStyle = FontStyles.Italic;
- BrushProcessBar();
- }
- private DispatcherTimer dt;
- private int i = 1;
- private void BrushProcessBar()
- {
- dt = new DispatcherTimer();
- dt.Interval = new TimeSpan(10000);
- dt.Tick += new EventHandler(dt_Tick);
- dt.Start();
- }
- protected void dt_Tick(object sender, EventArgs e)
- {
- // 纯色进度条
- //SolidColorBrush scb = new SolidColorBrush();
- //scb.Color = Color.FromRgb(63, 134, 231);
- // 渐变进度条
- LinearGradientBrush scb = new LinearGradientBrush(Color.FromRgb(63, 169, 233), Color.FromRgb(16, 111, 197), 0);
- this.rectangle1.Width = i++;
- this.label2.Margin = new Thickness(this.label2.Margin.Left + 1, this.label2.Margin.Top, this.label2.Margin.Right, this.label2.Margin.Bottom);
- this.rectangle1.Fill = scb;
- if (i == 50 || i == 120 || i == 410)
- {
- Thread.Sleep(200);
- }
- this.label2.Content = Decimal.Round(((decimal)i)/400*100,2) + "%";
- if (i == 400)
- {
- dt.Stop();
- this.textBox1.Text += "\r\nCompleted";
- }
- }
- private void Window_Loaded(object sender, RoutedEventArgs e)
- {
- }
- }
再给个程序运行效果图吧?好吧。
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