修复了剩余时间不刷新的问题

                    <TextBlock HorizontalAlignment="Left" VerticalAlignment="Top" Margin="0,4,0,0">文本颜色</TextBlock>

                    <hc:ColorPicker x:Name="colorPicker" Margin="0,32,0,0"></hc:ColorPicker>

                </Grid>

                <Button HorizontalAlignment="Left" VerticalAlignment="Top" Margin="0,4,0,0">刷新为现在的时间</Button>

                <Grid Margin="0,4,0,0">

                    <TextBlock HorizontalAlignment="Left" VerticalAlignment="Top" Margin="0,4,0,0">进度条颜色</TextBlock>

                    <hc:ColorPicker SelectedBrush="#FF40A3D6" x:Name="colorPicker2" Margin="0,32,0,0"></hc:ColorPicker>

                </Grid>

                <Grid Margin="0,4,0,0">

                    <TextBlock HorizontalAlignment="Left" VerticalAlignment="Top" Margin="0,4,0,0">进度条背景</TextBlock>

                    <hc:ColorPicker SelectedBrush="#7F949494" x:Name="colorPicker3" Margin="0,32,0,0"></hc:ColorPicker>

                </Grid>

                <Button HorizontalAlignment="Left" VerticalAlignment="Top" Margin="0,4,0,0" Click="Button_Click_4">刷新为现在的时间</Button>

                <Button HorizontalAlignment="Left" VerticalAlignment="Top" Margin="0,4,0,0" Click="Button_Click">选择字体（默认微软雅黑）</Button>

                <Button HorizontalAlignment="Left" VerticalAlignment="Top" Margin="0,4,0,0" Click="Button_Click_1">重新绘图</Button>

                <RadioButton x:Name="OpenFile" Height="28" Margin="0,4,0,0" HorizontalAlignment="Left" IsChecked="True">保存后打开图片</RadioButton>

                    <TextBlock Foreground="{Binding SelectedBrush, ElementName=colorPicker}" FontFamily="{Binding Font}" x:Name="timeText" Visibility="{Binding IsChecked, Converter={StaticResource BooleanToVisibilityConverter}, ElementName=checkBox4}">3天7:5:3</TextBlock>

                </Viewbox>

                <Viewbox x:Name="progressVB" Width="2880" Height="86.4" VerticalAlignment="Bottom" Margin="0,0,0,216">

                    <ProgressBar x:Name="progressBar" Height="{Binding ElementName=progressVB,Path=Height}" Width="{Binding ElementName=progressVB,Path=Width}" Style="{DynamicResource BaseStyle}" Foreground="#FF40A3D6" Background="#7FA4A4A4" BorderBrush="#7FA4A4A4" Value="21" HorizontalContentAlignment="Stretch" VerticalContentAlignment="Stretch"></ProgressBar>

                    <ProgressBar Foreground="{Binding SelectedBrush, ElementName=colorPicker2}" Background="{Binding SelectedBrush, ElementName=colorPicker3}" FontFamily="{Binding Font}" x:Name="progressBar" Height="{Binding ElementName=progressVB,Path=Height}" Width="{Binding ElementName=progressVB,Path=Width}" Style="{DynamicResource BaseStyle}" Value="21" HorizontalContentAlignment="Stretch" VerticalContentAlignment="Stretch" BorderBrush="{x:Null}"></ProgressBar>

                </Viewbox>

                <Viewbox x:Name="progressTextVB" Width="307.2" VerticalAlignment="Bottom" HorizontalAlignment="Center" Margin="0,0,0,324">

                    <TextBlock Foreground="{Binding SelectedBrush, ElementName=colorPicker}" x:Name="progressText">1.00%</TextBlock>

        </Viewbox>

        <StackPanel Grid.Column="1" Grid.Row="2" HorizontalAlignment="Right" VerticalAlignment="Center" Margin="0,0,4,0" Orientation="Horizontal">

            <Button Margin="0,0,4,0">

            <Button Margin="0,0,4,0" Click="Button_Click_5">

                复制到剪切板

            </Button>

            <Button Click="Button_Click_3">

#pragma warning disable CA1

using CountDownList.Controls;

using CountDownList.UI.WindowFrame;

using OpenCvSharp;

using SixLabors.ImageSharp.Formats.Tiff;

using System;

using System.Collections.Generic;

using System.Drawing;

            }

            else if((bool)OpenFloder.IsChecked)

            {

                System.Diagnostics.Process.Start($@"\explorer.exe", $@"/select,{fileName}.PNG");

                System.Diagnostics.Process.Start($@"explorer.exe", $@"/select,{fileName}.PNG");

            }

        }

        private void Button_Click_4(object sender, RoutedEventArgs e)

        {

            now = DateTime.Now;

        }

        private void Button_Click_5(object sender, RoutedEventArgs e)

        {

            string fileName = $"{AppDomain.CurrentDomain.BaseDirectory}Data\\Shared\\{DateTime.Now.Ticks}";

            GetPicFromControlToPNG(outputImg, fileName);

            CopyFile(fileName + ".PNG");

        }

        /// <summary>

        /// 复制或剪切文件到剪切板，参考文章：https://www.cnblogs.com/xcsn/p/4678364.html

        /// </summary>

        /// <param name="filePath">文件路径数组</param>

        /// <param name="cut">true:剪切；false:复制</param>

        public static void CopyFile(string filePath, bool cut = false)

        {

            if (filePath == null) return;

            CopyFileList(new[] { filePath }, cut);

        }

        public static void CopyFileList(string[] files, bool cut = false)

        {

            if (files == null) return;

            IDataObject data = new DataObject(DataFormats.FileDrop, files);

            MemoryStream memo = new MemoryStream(4);

            byte[] bytes = new byte[] { (byte)(cut ? 2 : 5), 0, 0, 0 };

            memo.Write(bytes, 0, bytes.Length);

            data.SetData("PreferredDropEffect", memo);

            Clipboard.SetDataObject(data, false);

        }

        public void Update()

        {

            if (titleFormat == "")

            {

                //默认标题

                if (ShareTarget.EndTime <= DateTime.Now || ShareTarget.IsCountMode)

                if (ShareTarget.EndTime <= now || ShareTarget.IsCountMode)

                {

                    titleText.Text = ShareTarget.Title + "已经过去";

                }

                titleText.Text = titleFormat;

            }

            progressBar.Maximum = ShareTarget.EndTime.Second;

            progressBar.Minimum = ShareTarget.StartTime.Second;

            progressBar.Value = now.Second;

            timeText.Text = (ShareTarget.StartTime - now).ToString("dd\\天hh\\:mm\\:ss");

            progressBar.Maximum = ShareTarget.EndTime.Ticks;

            progressBar.Minimum = ShareTarget.StartTime.Ticks;

            progressBar.Value = now.Ticks;

            if (ShareTarget.EndTime >= now || overflowMode)

            {