给按钮添加点击事件
给 Button 添加属性 Click,在button后任意地方输入Click,在选择,创建Button_Click事件(将事件绑定到新创建的名为Button_Click)
private void Button_Click(object sender, RoutedEventArgs e){}
设置TextBlock的隐藏与实现(Visibility)
Visibility有三种用法,
第一个:Visible 元素在窗体中正常显示
第二个:Collaspsed 元素不显示,也不占用空间
第三个:Hidden 元素不显示,但是任然为它保留空间
在xzml
<Grid><StackPanel><TextBlock x:Name="txtTotal" Text=" 开始计算" Visibility="Hidden"/><Button Content="计算结果=" Click="Button_Click" Height="100" Width=" 200" HorizontalContentAlignment="Center" VerticalContentAlignment="Center" MouseEnter="Button_MouseEnter" MouseLeave="Button_MouseLeave"/></StackPanel>
在cs中
private void Button_Click(object sender, RoutedEventArgs e)
{int nub1 = 200;int nub2 = 300;int he =nub1+ nub2;txtTotal.Text =Convert.ToString(he);txtTotal.Visibility = Visibility.Visible;
}private void Button_MouseEnter(object sender, MouseEventArgs e)
{txtTotal.Text = "鼠标进来了";txtTotal.Visibility = Visibility.Visible;
}private void Button_MouseLeave(object sender, MouseEventArgs e)
{txtTotal.Text = "鼠标出入了";}