需求：封装按钮，按钮上面只显示文字。在鼠标移上去、鼠标点击按钮、以及将按钮设为不可用时按钮的背景色和前景色需要发生变化
实现：继承Button类，封装如下6个属性：
#region 依赖属性
/// <summary>
/// 当鼠标移到按钮上时，按钮的前景色（这是依赖属性）
/// </summary>
public static readonly DependencyProperty MouserOverForegroundProperty =
DependencyProperty.Register ( "MouserOverForeground", typeof ( Brush ), typeof ( TextButton ), new PropertyMetadata ( Brushes.Black ) ); /// <summary>
/// 鼠标移到按钮上时，按钮的背景色（这是依赖属性）
/// </summary>
public static readonly DependencyProperty MouseOverBackgroundProperty =
DependencyProperty.Register ( "MouseOverBackground", typeof ( Brush ), typeof ( TextButton ), new PropertyMetadata ( Brushes.White ) ); /// <summary>
/// 当鼠标按下时，按钮的前景色（这是依赖属性）
/// </summary>
public static readonly DependencyProperty MousedownForegroundProperty =
DependencyProperty.Register ( "MousedownForeground", typeof ( Brush ), typeof ( TextButton ), new PropertyMetadata ( Brushes.Black ) ); /// <summary>
/// 当鼠标按下时，按钮的背景色（这是依赖属性）
/// </summary>
public static readonly DependencyProperty MousedownBackgroundProperty =
DependencyProperty.Register ( "MousedownBackground", typeof ( Brush ), typeof ( TextButton ), new PropertyMetadata ( Brushes.White ) ); /// <summary>
/// 当按钮不可用时，按钮的前景色（这是依赖属性）
/// </summary>
public static readonly DependencyProperty DisabledForegroundProperty =
DependencyProperty.Register ( " DisabledForeground", typeof ( Brush ), typeof ( TextButton ), new PropertyMetadata ( Brushes.Black ) ); /// <summary>
/// 当按钮不可用时，按钮的背景色（这是依赖属性）
/// </summary>
public static readonly DependencyProperty DisabledBackgroundProperty =
DependencyProperty.Register ( "DisabledBackground", typeof ( Brush ), typeof ( TextButton ), new PropertyMetadata ( Brushes.White ) );
#endregion
然后更改按钮的样式，样式封装在资源字典中：
<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:Zmy.Wpf.Controls">
<Style x:Key="TextButtonStyle" TargetType="{x:Type local:TextButton}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type local:TextButton}">
<Border x:Name="buttonBorder"
Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding Foreground}">
<ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter> <Style.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Foreground" Value="{Binding RelativeSource={RelativeSource Self}, Path=MouserOverForeground}"/>
<Setter Property="Background" Value="{Binding RelativeSource={RelativeSource Self}, Path=MouseOverBackground}"/>
</Trigger> <Trigger Property="IsPressed" Value="True">
<Setter Property="Foreground" Value="{Binding RelativeSource={RelativeSource Self}, Path=MousedownForeground}"/>
<Setter Property="Background" Value="{Binding RelativeSource={RelativeSource Self}, Path=MousedownBackground}"/>
</Trigger> <Trigger Property="IsEnabled" Value="False">
<Setter Property="Foreground" Value="{Binding RelativeSource={RelativeSource Self}, Path=DisabledForeground}"/>
<Setter Property="Background" Value="{Binding RelativeSource={RelativeSource Self}, Path=DisabledBackground}"/>
</Trigger>
</Style.Triggers>
</Style>
</ResourceDictionary>
然后在TextButton的构造函数中设置按钮的样式：
#region 构造函数
public TextButton() : base()
{
//获取资源文件信息
ResourceDictionary rd = new ResourceDictionary();
rd.Source = new Uri ( "/Zmy.Wpf.Controls;component/Style.xaml", UriKind.Relative );
this.Resources.MergedDictionaries.Add ( rd );
//设置样式
this.Style = this.FindResource ( "TextButtonStyle" ) as Style;
}
#endregion
这样整个文字按钮就封装好了，调用起来非常简单：
<controls:TextButton Content="测试按钮" Width="300" Height="50"
MouserOverForeground="Yellow" MouseOverBackground="Blue" MousedownBackground="Green" MousedownForeground="Blue"/> <controls:TextButton Content="测试按钮" Width="300" Height="50" IsEnabled="False"
DisabledForeground="Yellow" DisabledBackground="Blue" Margin="0,100,0,0"/>
源代码下载：http://download.csdn.net/detail/lyclovezmy/7356125
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