WPF Realizes the Function of Refreshing UI Interface Timely
- 2021-10-11 18:00:24
- OfStack
In this paper, we share the specific codes of WPF refresh UI interface regularly for your reference. The specific contents are as follows
Code:
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 Notice announcement
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 Binding notification announcement
private void BindNotice()
{
System.Threading.Tasks.Task.Factory.StartNew(() =>
{
try
{
int total = 0;
TES_NOTICE info = new TES_NOTICE();
IList<TES_NOTICE> list = new List<TES_NOTICE>();
list = HI.Get<INoticeService>().GetListPage(null, DateTime.MinValue, DateTime.MinValue, 1, 50, ref total);
Dispatcher.Invoke(new Action(() =>
{
noticeListView.ItemsSource = list;
}));
}
catch
{
}
});
}
#endregion
}
}
Note: Using BackgroundWorker in System. Timers. Timer is invalid, that is, the following code cannot refresh the interface normally:
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 Notice announcement
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 Binding notification announcement
private void BindNotice()
{
PT_USER_INFO user = new PT_USER_INFO();
IList<TES_COMBAT_TASK> taskList = new List<TES_COMBAT_TASK>();
BackgroundWorker worker = new BackgroundWorker();
worker.DoWork += (s, e) =>
{
user = HI.Get<Cache.ICacheService>().UserCache.GetCurrentUserInfo();
taskList = HI.Get<ITaskService>().GetCombatTaskByUserIDUnfinished(user.ID.ToString());
};
worker.RunWorkerCompleted += (s, e) =>
{
try
{
taskListView.ItemsSource = taskList;
}
catch { }
};
worker.RunWorkerAsync();
}
#endregion
}
}
You can also use DispatcherTimer to refresh the interface, but the time-consuming operation cannot be executed in the event of DispatcherTimer, otherwise the interface will get stuck, so the time-consuming timing operation, such as querying the database, needs to use another System. Timers. Timer, which is relatively troublesome.