这篇文章主要为大家详细介绍了wpf实现定时刷新ui界面功能，具有一定的参考价值，感兴趣的小伙伴们可以参考一下
本文实例为大家分享了WPF定时刷新UI界面展示的具体代码，供大家参考，具体内容如下
代码：
using NHibernate.Criterion;using System;using System.Collections.Generic;using System.Collections.ObjectModel;using System.ComponentModel;using System.Data;using System.Linq;using System.Text;using System.Threading;using System.Windows;using System.Windows.Controls;using System.Windows.Data;using System.Windows.Documents;using System.Windows.Input;using System.Windows.Media;using System.Windows.Media.Imaging;using System.Windows.Navigation;using System.Windows.Shapes;using Visifire.Charts;namespace SunCreate.CombatPlatform.Client{ public partial class MainPage : UserControl { private System.Timers.Timer timerNotice = null; public MainPage() { InitializeComponent(); } private void MainPage_Loaded(object sender, RoutedEventArgs e) { #region 通知公告 if (timerNotice == null) { BindNotice(); timerNotice = new System.Timers.Timer(); timerNotice.Elapsed += new System.Timers.ElapsedEventHandler((o, eea) => { BindNotice(); }); timerNotice.Interval = 60 * 1000; timerNotice.Start(); } #endregion } private void MainPage_SizeChanged(object sender, SizeChangedEventArgs e) { } #region 绑定通知公告 private void BindNotice() { System.Threading.Tasks.Task.Factory.StartNew(() => { try { int total = 0; TES_NOTICE info = new TES_NOTICE(); IList list = new List(); list = HI.Get().GetListPage(null, DateTime.MinValue, DateTime.MinValue, 1, 50, ref total); Dispatcher.Invoke(new Action(() => { noticeListView.ItemsSource = list; })); } catch { } }); } #endregion }}
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说明：在 System.Timers.Timer 的事件中使用 BackgroundWorker 是无效的，即如下代码不能正常刷新界面：
using NHibernate.Criterion;using System;using System.Collections.Generic;using System.Collections.ObjectModel;using System.ComponentModel;using System.Data;using System.Linq;using System.Text;using System.Threading;using System.Windows;using System.Windows.Controls;using System.Windows.Data;using System.Windows.Documents;using System.Windows.Input;using System.Windows.Media;using System.Windows.Media.Imaging;using System.Windows.Navigation;using System.Windows.Shapes;using Visifire.Charts;namespace SunCreate.CombatPlatform.Client{ public partial class MainPage : UserControl { private System.Timers.Timer timerNotice = null; public MainPage() { InitializeComponent(); } private void MainPage_Loaded(object sender, RoutedEventArgs e) { #region 通知公告 if (timerNotice == null) { BindNotice(); timerNotice = new System.Timers.Timer(); timerNotice.Elapsed += new System.Timers.ElapsedEventHandler((o, eea) => { BindNotice(); }); timerNotice.Interval = 60 * 1000; timerNotice.Start(); } #endregion } private void MainPage_SizeChanged(object sender, SizeChangedEventArgs e) { } #region 绑定通知公告 private void BindNotice() { PT_USER_INFO user = new PT_USER_INFO(); IList taskList = new List(); BackgroundWorker worker = new BackgroundWorker(); worker.DoWork += (s, e) => { user = HI.Get().UserCache.GetCurrentUserInfo(); taskList = HI.Get().GetCombatTaskByUserIDUnfinished(user.ID.ToString()); }; worker.RunWorkerCompleted += (s, e) => { try { taskListView.ItemsSource = taskList; } catch { } }; worker.RunWorkerAsync(); } #endregion }}
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也可以使用 DispatcherTimer 刷新界面，但耗时的操作不能放在DispatcherTimer的事件中执行，否则界面会卡，那么耗时的定时操作，比如查询数据库，需要再用一个 System.Timers.Timer，相对比较麻烦。
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