我在动态处理MouseUp
事件时遇到问题。有问题的测试代码:
WPF:
<Window x:Class="WpfApplication1.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="350" Width="525">
<Grid>
<Button x:Name="Button1" Content="Button1" HorizontalAlignment="Left" Margin="10,10,0,0" VerticalAlignment="Top" Width="75" Click="Button_Click_1"/>
<Button x:Name="Button2" Content="Button2" HorizontalAlignment="Left" Margin="10,37,0,0" VerticalAlignment="Top" Width="75"/>
</Grid>
</Window>
C# 后面:
using System.Windows;
using System.Windows.Input;
namespace WpfApplication1
{
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
private void Button_Click_1(object sender, RoutedEventArgs e)
{
Button2.MouseLeftButtonUp += something;
}
private void something(object sender, MouseEventArgs e)
{
MessageBox.Show("TEST");
Button2.MouseLeftButtonUp -= something;
}
}
}
现在,我希望在我点击后MessageBox
第一次显示带有文本“TEST”的。它没有出现。相同的代码适用于事件,但我需要获取鼠标位置。我已经确认第一个函数会触发,但无论我尝试什么,第二个函数都不会触发。帮助?Button2
Button1
Click
MouseUp