c#触发事件

Demo1 触发事件

<Window x:Class="WPFExample.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="WPF Example" Height="600" Width="800"> <Grid> <TextBlock x:Name="txtTotal" Text="计算结果" Visibility="Hidden"/> <StackPanel> <Button Content="Click me" Height="30" Width="200" Click="Button_Click" HorizontalAlignment="Center" Background="#FFE8DD2C" BorderBrush="#FF3E94ED" MouseEnter="Button_Mouse_Enter" MouseLeave="Button_Mouse_Leave"/> </StackPanel> </Grid> </Window> using System; using System.Windows; namespace WPFExample { public partial class MainWindow : Window { public MainWindow() { InitializeComponent(); } private void Button_Click(object sender, RoutedEventArgs e) { int num1 = 10; int num2 = 20; int total=num1 + num2; txtTotal.Text=total.ToString(); txtTotal.Visibility=Visibility.Visible; } private void Button_Mouse_Enter(object sender, System.Windows.Input.MouseEventArgs e) { txtTotal.Text = "鼠标进入这个范围了"; txtTotal.Visibility = Visibility.Visible; } private void Button_Mouse_Leave(object sender, System.Windows.Input.MouseEventArgs e) { txtTotal.Text = "鼠标移出这个范围了"; txtTotal.Visibility = Visibility.Visible; } } }