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這期內(nèi)容當(dāng)中小編將會(huì)給大家?guī)碛嘘P(guān)利用WPF怎么實(shí)現(xiàn)一個(gè)進(jìn)度條功能,文章內(nèi)容豐富且以專業(yè)的角度為大家分析和敘述,閱讀完這篇文章希望大家可以有所收獲。
實(shí)現(xiàn)說明
1、下載MUI相關(guān)代碼或者dll文件;
2、工程中引入該dll,并引入其資源文件;
<Application.Resources> <ResourceDictionary> <ResourceDictionary.MergedDictionaries> <ResourceDictionary Source="/FirstFloor.ModernUI;component/Assets/ModernUI.xaml" /> <ResourceDictionary Source="/FirstFloor.ModernUI;component/Assets/ModernUI.Light.xaml"/> </ResourceDictionary.MergedDictionaries> </ResourceDictionary> </Application.Resources>
3、在需要顯示進(jìn)度條的頁面,加入控件(其實(shí)還是WPF控件,只是MUI擴(kuò)展了其樣式而已);
<Label Margin="280,169,0,0" Style="{StaticResource BackGroundContentText}" x:Name="lblMainState" HorizontalAlignment="Left" VerticalAlignment="Top">正在啟動(dòng):</Label> <ProgressBar Margin="280,200,0,0" HorizontalAlignment="Left" VerticalAlignment="Top" Width="500" Minimum="0" x:Name="ProgressControlRealValue" Maximum="1" Value="0.1" Height="16" IsIndeterminate="False"/> <Label Margin="280,212,0,0" Style="{StaticResource BackGroundContentText}" x:Name="lblProcess" HorizontalAlignment="Left" VerticalAlignment="Top">正在加載地圖數(shù)據(jù)...</Label> <ProgressBar Margin="280,250,0,0" HorizontalAlignment="Left" VerticalAlignment="Top" Minimum="0" x:Name="ProgressControl" Width="500" Maximum="2" Height="16" IsIndeterminate="True" />
4、后臺(tái)實(shí)現(xiàn),由于要根據(jù)情況更新進(jìn)度文字及進(jìn)度條的值。所以,這里用到了異步BackgroundWorker(具體可以網(wǎng)上查查相關(guān)資料);
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.ComponentModel; namespace Monitor.Class { /// <summary> /// 異步操作 /// </summary> public class CWorker { /// <summary> /// 對象 /// </summary> private BackgroundWorker backgroundWorker; /// <summary> /// 后臺(tái)執(zhí)行的操作 /// </summary> public Action BackgroundWork { get; set; } /// <summary> /// 后臺(tái)任務(wù)執(zhí)行完畢后事件 /// </summary> public event EventHandler<BackgroundWorkerEventArgs> BackgroundWorkerCompleted; private BackgroundWorkerEventArgs _eventArgs;//異常參數(shù) /// <summary> /// 構(gòu)造 /// </summary> public CWorker() { _eventArgs = new BackgroundWorkerEventArgs(); backgroundWorker = new BackgroundWorker(); backgroundWorker.WorkerReportsProgress = true; backgroundWorker.WorkerSupportsCancellation = true; backgroundWorker.DoWork += new DoWorkEventHandler(backgroundWorker1_DoWork); backgroundWorker.RunWorkerCompleted += new RunWorkerCompletedEventHandler(backgroundWorker1_RunWorkerCompleted); } /// <summary> /// 開始工作 /// </summary> public void BegionWork() { if (backgroundWorker.IsBusy) return; backgroundWorker.RunWorkerAsync(); } /// <summary> /// 工作 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e) { if (BackgroundWork != null) { try { BackgroundWork(); } catch (Exception ex) { _eventArgs.BackGroundException = ex; } } } /// <summary> /// 完成 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e) { if (this.BackgroundWorkerCompleted != null) { this.BackgroundWorkerCompleted(null, _eventArgs); } } } /// <summary> /// 事件 /// </summary> public class BackgroundWorkerEventArgs : EventArgs { /// <summary> /// 后臺(tái)程序運(yùn)行時(shí)拋出的異常 /// </summary> public Exception BackGroundException { get; set; } } }
namespace Monitor { /// <summary> /// Splash.xaml 的交互邏輯 /// </summary> public partial class Splash : Window { MainWindow m_MainWindow = null;//主窗口 CWorker m_Work = null;//任務(wù) public Splash() { InitializeComponent(); m_MainWindow = new MainWindow();//創(chuàng)建主窗口對象 m_Work = new CWorker(); m_Work.BackgroundWork = this.ProcessDo; m_Work.BackgroundWorkerCompleted += new EventHandler<BackgroundWorkerEventArgs>(m_Work_BackgroundWorkerCompleted); } /// <summary> /// 進(jìn)度提示 /// </summary> public void ProcessDo() { m_MainWindow.InitData(this); } /// <summary> /// 移動(dòng) /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void Grid_MouseLeftButtonDown(object sender, MouseButtonEventArgs e) { this.DragMove(); } /// <summary> /// 窗口加載 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void Window_Loaded(object sender, RoutedEventArgs e) { m_Work.BegionWork(); } /// <summary> /// 執(zhí)行完成 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> void m_Work_BackgroundWorkerCompleted(object sender, BackgroundWorkerEventArgs e) { m_MainWindow.Show(); this.Close(); } /// <summary> /// 賦值 /// </summary> /// <param name="text"></param> private delegate void SetProcessLabelDelegate(string text, double processValue); public void SetProcessValue(string text, double processValue) { if (!Dispatcher.CheckAccess()) { Dispatcher.Invoke(DispatcherPriority.Send, new SetProcessLabelDelegate(SetProcessValue), text, processValue); return; } this.lblProcess.Content = text; this.ProgressControlRealValue.Value = processValue; } } }
上述就是小編為大家分享的利用WPF怎么實(shí)現(xiàn)一個(gè)進(jìn)度條功能了,如果剛好有類似的疑惑,不妨參照上述分析進(jìn)行理解。如果想知道更多相關(guān)知識,歡迎關(guān)注億速云行業(yè)資訊頻道。
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