c# wpf 应用程序中的时钟
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时间：2020-09-13 07:10:49 来源:igfitidea点击:
a clock in c# wpf application
提问by Hatem
- i'm working on c# wpf application and i would like to add a clock to my application:
- how to make that clock in my application?
- how to make my application clock not linked to windows clock??
- how to show clock by different styles in my application?
- how to make it contains calender, time zone...etc .. and modify these things through my application itself?
- can i make my time stamp in Database linked to application clock and how to achieve that?
- 我正在开发 c# wpf 应用程序，我想在我的应用程序中添加一个时钟：
- 如何在我的应用程序中制作那个时钟？
- 如何使我的应用程序时钟不链接到 Windows 时钟？
- 如何在我的应用程序中以不同的样式显示时钟？
- 如何使其包含日历、时区...等 .. 并通过我的应用程序本身修改这些内容？
- 我可以将数据库中的时间戳链接到应用程序时钟以及如何实现吗？
回答by sa_ddam213
It would be quite easy to make a clock like this.
制作这样的时钟会很容易。
Here is a small example to get you started
这是一个让您入门的小示例
Xaml:
Xml：
<Window x:Class="WpfApplication8.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="233" Width="143" Name="UI">
<Grid DataContext="{Binding ElementName=UI}">
<StackPanel>
<TextBlock Text="{Binding CurrentTime}" />
<ComboBox ItemsSource="{Binding TimeZones}" SelectedItem="{Binding SelectedTimeZone}" />
</StackPanel>
</Grid>
</Window>
Code:
代码：
public partial class MainWindow : Window, INotifyPropertyChanged
{
private string _currenttime;
private TimeZoneInfo _selectedTimeZone;
public MainWindow()
{
InitializeComponent();
DispatcherTimer timer = new DispatcherTimer(DispatcherPriority.Background);
timer.Interval = TimeSpan.FromSeconds(1);
timer.IsEnabled = true;
timer.Tick += (s, e) =>
{
UpdateTime();
};
}
public List<TimeZoneInfo> TimeZones
{
get { return TimeZoneInfo.GetSystemTimeZones().ToList(); }
}
public string CurrentTime
{
get { return _currenttime; }
set { _currenttime = value; OnPropertyChanged("CurrentTime"); }
}
public TimeZoneInfo SelectedTimeZone
{
get { return _selectedTimeZone; }
set
{
_selectedTimeZone = value;
OnPropertyChanged("SelectedTimeZone");
UpdateTime();
}
}
private void UpdateTime()
{
CurrentTime = SelectedTimeZone == null
? DateTime.Now.ToLongTimeString()
: DateTime.UtcNow.AddHours(SelectedTimeZone.BaseUtcOffset.TotalHours).ToLongTimeString();
}
public event PropertyChangedEventHandler PropertyChanged;
public void OnPropertyChanged(string property)
{
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(property));
}
}
}
Clock:
时钟：
