2021-08-14 WPF控件专题 ProgressBar控件详解-蒲公英云

2021-08-14 WPF控件专题 ProgressBar控件详解

在这里插入图片描述

1.ProgressBar 控件介绍

进度条：显示某个操作的进度过程。

Maximum Minimum Orientation Value IsIndeterminate

2.具体案例

<Grid>
    <!--Orientation 进度条的方向 默认水平 IsIndeterminate 指示进度是显示实际值 true 连续进度反馈-->
    <ProgressBar HorizontalAlignment="Left" Orientation="Vertical" IsIndeterminate="True" Value="40" Minimum="0" Maximum="80" Height="299" Margin="49,89,0,0" VerticalAlignment="Top" Width="98"/>
    <ProgressBar Name="pbar2" HorizontalAlignment="Left" Minimum="0" Maximum="100"  Orientation="Horizontal"  SmallChange="2" Height="29" Margin="287,201,0,0" VerticalAlignment="Top" Width="412"  ValueChanged="Pbar2_ValueChanged" >
    </ProgressBar>
    <Button Content="加载" HorizontalAlignment="Left" Margin="287,328,0,0" VerticalAlignment="Top" Width="75" Click="Button_Click"/>
    <Label Name="lblVal" HorizontalAlignment="Left" Margin="287,252,0,0" VerticalAlignment="Top" Height="28" Width="51"/>
</Grid>
private void Button_Click(object sender, RoutedEventArgs e)
{ 
    //pbar2.Value = 0;
    //for (int i = 0; i < pbar2.Maximum; i++)
    //{ 
    // pbar2.Value = i;
    // lblVal.Content = pbar2.Value + "%";
    // Thread.Sleep(100);
    //}
    int max = 50;
    Task.Run(() =>
    { 
        for (int i = 0; i <= max; i++)
        { 
            pbar2.Dispatcher.Invoke(() =>
            { 
                pbar2.Value = i;
                //lblVal.Content = pbar2.Value + "%";
            });
            Thread.Sleep(100);
        }
    });
}
private void Pbar2_ValueChanged(object sender, RoutedPropertyChangedEventArgs<double> e)
{ 
        lblVal.Content = e.NewValue + "%";
}