WPF的触发器很强大,这里简单附上触发器的一个小例子,分别用XMAL和CS代码来实现一个功能,鼠标悬停在button上时改变字体颜色
1.XMAL代码如下:
<Window x:Class="wpf触发器.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 Name="grid" >
<Button x:Name="btnHello" Content="clickMe" Height="24" Width="60" >
<Button.Style>
<Style TargetType="Button">
<Style.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Foreground" Value="Blue"></Setter>
<Setter Property="Background" Value="#00ff00"></Setter>
</Trigger>
</Style.Triggers>
</Style>
</Button.Style>
</Button>
</Grid>
</Window>
Cs代码如下:
public MainWindow()
{
InitializeComponent();
Button btn = new Button() { Width =100,Height=50,Content="overme"};
//实例style,参数带上控件类型
Style m_style = new Style( typeof(Button));
//实例trigger,并加上触发的property和value
Trigger trigger = new Trigger();
trigger.Property = IsMouseOverProperty;
trigger.Value = true;
//当满足trigger设定的条件时,要应用的属性值
trigger.Setters.Add(new Setter(ForegroundProperty, Brushes.Red));
m_style.Triggers.Add(trigger);
btn.Style = m_style;
grid.Children.Add(btn); //grid就是外面的Grid
}