(10)WPF 范围控件

 ScrollBar，Slider，ProgressBar继承自RangeBase，RangeBase继承自Control

RangeBase类属性

value控件的当前值默认为0，双精度浮点数，value发生变化时响应ValueChanged事件

Maximum 上限

Minimum 下限

SmallChange 上下调整数量小变化

LargeChange  上下调整数量大变化

一、ScrollBar

滚动条

 ScrollViewer 封装了两个ScrollBar

二、Slider

<Slider Width="300" Value="50" Minimum="0" Maximum="200"></Slider>

            //水平条还是垂直条，默认水平
            //slider.Orientation = Orientation.Vertical;
            //刻度
            slider.TickPlacement = TickPlacement.TopLeft;
            //刻度间隔
            slider.TickFrequency = 10;
            //只显示该集合内的刻度
            //slider.Ticks = new DoubleCollection() { 1, 10, 20, 30, 40, 50 };
            //自动跳转到最近的刻度上
            slider.IsSnapToTickEnabled = true;
            //结合SelectionStart,SelectionEnd设置范围阴影
            slider.IsSelectionRangeEnabled = true;
            slider.SelectionStart = 30;
            slider.SelectionEnd = 60;

 滑动事件

slider.ValueChanged += slider_ValueChanged;

        private void slider_ValueChanged(object sender, RoutedPropertyChangedEventArgs<double> e)
        {
            lable.Content = slider.Value;
        }

        public MainWindow()
        {
            InitializeComponent();
            //水平条还是垂直条，默认水平
            //slider.Orientation = Orientation.Vertical;
            //刻度
            slider.TickPlacement = TickPlacement.TopLeft;
            //刻度间隔
            slider.TickFrequency = 10;
            //只显示该集合内的刻度
            //slider.Ticks = new DoubleCollection() { 1, 10, 20, 30, 40, 50 };
            //自动跳转到最近的刻度上
            slider.IsSnapToTickEnabled = true;
            //结合SelectionStart,SelectionEnd设置范围阴影
            slider.IsSelectionRangeEnabled = true;
            slider.SelectionStart = 30;
            slider.SelectionEnd = 60;
            slider.ValueChanged += slider_ValueChanged;
        }


        private void slider_ValueChanged(object sender, RoutedPropertyChangedEventArgs<double> e)
        {
            lable.Content = slider.Value;
        }

 三、ProgressBar

<ProgressBar Name="progressBar" Width="120" Value="50" Minimum="0" Maximum="200" Height="30"></ProgressBar>

            //一个小绿条从左向右移动
            progressBar.IsIndeterminate = true;