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云南大王-WPF实现消息提醒（广告弹窗）
发布时间：2020-04-13 00:00:00
1.先上效果图：
2.1t提示框界面。 主窗口界面没什么内容，就放了一个触发按钮。先绘制通知窗口（一个关闭按钮，俩个文本控件），可以设置下ResizeMode="NoResize" WindowStyle="None" Topmost="True"，
去掉窗口标题，并使提示窗口始终处于最上层。
2.2主窗口后台代码。
NotifyData类是弹出窗口的推送消息。
List计算高度时，如果窗口关闭，窗口就会从List中移除。
GetTopFrom负责计算弹出窗口距离屏幕顶端的高度。
Button_Click 传递消息，弹出窗口。
class NotifyData
{
public string Title { get; set; }
public string Content { get; set; }
}
public partial class MainWindow : Window
{
int i = 0;
public static List _dialogs = new List();
public MainWindow()
{
InitializeComponent();
}
private void Button_Click(object sender, RoutedEventArgs e)
{
i++;
NotifyData data = new NotifyData();
data.Title = "提示";
data.Content = "XXX余额不足，XXX余额不足，XXX余额不足，XXX余额不足" + i;
Window1 dialog = new Window1();//new 一个通知
dialog.Closed += Dialog_Closed;
dialog.TopFrom = GetTopFrom();
dialog.DataContext = data;//设置通知里要显示的数据
dialog.Show();
_dialogs.Add(dialog);
}
private void Dialog_Closed(object sender, EventArgs e)
{
var closedDialog = sender as Window1;
_dialogs.Remove(closedDialog);
}
double GetTopFrom()
{
//屏幕的高度-底部TaskBar的高度。
double topFrom = System.Windows.SystemParameters.WorkArea.Bottom - 10;
bool isContinueFind = _dialogs.Any(o => o.TopFrom == topFrom);
while (isContinueFind)
{
topFrom = topFrom - 160;//此处100是NotifyWindow的高 160-100剩下的10 是通知之间的间距
isContinueFind = _dialogs.Any(o => o.TopFrom == topFrom);
}
if (topFrom <= 0)
topFrom = System.Windows.SystemParameters.WorkArea.Bottom-10;
return topFrom;
}
}
2.3消息提醒窗后台代码
NotificationWindow_Loaded 接收传过来的内容TopFrom和NotifyData，然后确定弹出窗口位置，并在5S后关闭窗口。
Button_Click 关闭窗口
public partial class Window1 : Window
{
public double TopFrom
{
get; set;
}
public Window1()
{
InitializeComponent();
this.Loaded += NotificationWindow_Loaded;
}
private void NotificationWindow_Loaded(object sender, RoutedEventArgs e)
{
NotifyData data = this.DataContext as NotifyData;
if (data != null)
{
tbContent.Text = data.Content;
tbTitle.Text = data.Title;
}
Window1 self = sender as Window1;
if (self!=null)
{
double right=SystemParameters.WorkArea.Right-10;//工作区最右边的值
self.Top = TopFrom - 160;
DoubleAnimation animation = new DoubleAnimation();
animation.Duration = new Duration(TimeSpan.FromMilliseconds(500));
animation.From = right;
animation.To = right - self.ActualWidth;
self.BeginAnimation(Window.LeftProperty, animation);
Task.Factory.StartNew(delegate
{
int seconds = 5;//通知持续5s后消失
System.Threading.Thread.Sleep(TimeSpan.FromSeconds(seconds));
//Invoke到主进程中去执行
this.Dispatcher.Invoke(delegate
{
animation = new DoubleAnimation();
animation.Duration = new Duration(TimeSpan.FromMilliseconds(500));
animation.Completed += (s, a) => { self.Close(); };//动画执行完毕，关闭当前窗体
animation.From = right - self.ActualWidth;
animation.To = right;//通知从左往右收回
self.BeginAnimation(Window.LeftProperty, animation);
});
});
}
}
private void Button_Click(object sender, RoutedEventArgs e)
{
double right = SystemParameters.WorkArea.Right;
DoubleAnimation animation = new DoubleAnimation();
animation.Duration = new Duration(TimeSpan.FromMilliseconds(500));
animation.Completed += (s, a) => { this.Close(); };
animation.From = right - this.ActualWidth;
animation.To = right;
this.BeginAnimation(Window.LeftProperty, animation);
}
}
3.源码下载地址
https://files-cdn.cnblogs.com/files/king10086/NoticeDemo.7z
