C#--WPF自定义控件模板示例

1.UI代码

    <Button Background="Black"  BorderBrush="Transparent" Padding="0" HorizontalContentAlignment="Left" Style="{StaticResource ButtonEmpty}"
            Command="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type local:Valve1h}}, Path=ValueCmd}"
            CommandParameter="{Binding  ElementName=ID,Path=Text }" Cursor="Hand" IsHitTestVisible="True"/>

注释：属性绑定释义

Command--Ancestor 查找绑定至自定义控件Valve1h，实体命令绑定本地自建依赖属性ValueCmd

CommandParameter--绑定本地TextBlock控件Name为ID，Path为其文本值

2.cs代码

2.1 string依赖属性及属性值变化回调函数

        public static readonly DependencyProperty ValueLabelProperty =
        DependencyProperty.Register("ValueLabel", typeof(string),
        typeof(Valve1h), new PropertyMetadata("00", new                             
        PropertyChangedCallback(OnLabelChanged)));//CHANGED
        public string ValueLabel
        {
            get { return (string)GetValue(ValueLabelProperty); }
            set { SetValue(ValueLabelProperty, value); }
        }
        static void OnLabelChanged(object sender, DependencyPropertyChangedEventArgs args)
        {
            Valve1h source = (Valve1h)sender;//CHANGED
            source.ID.Text = (string)args.NewValue;//CHANGED
        }

2.2 Bool依赖属性及属性值变化回调函数

        public static readonly DependencyProperty ValueBitProperty =
        DependencyProperty.Register("ValueBit", typeof(bool),
        typeof(Valve1h), new PropertyMetadata(false, new PropertyChangedCallback(OnBitChanged)));//CHANGED--属性变化回调函数
        public bool ValueBit
        {
            get { return (bool)GetValue(ValueBitProperty); }
            set { SetValue(ValueBitProperty, value); }
        }
        static void OnBitChanged(object sender, DependencyPropertyChangedEventArgs args)
        {
            Valve1h source = (Valve1h)sender;//CHANGED
            if ((bool)args.NewValue)
                source.ValveShape.Fill = Brushes.GreenYellow;
            else
                source.ValveShape.Fill = Brushes.SteelBlue;            //CHANGED
        }

2.3 Command依赖属性

        public static readonly DependencyProperty ValueCmdProperty =
        DependencyProperty.Register("ValueCmd", typeof(ICommand),
        typeof(Valve1h), new FrameworkPropertyMetadata() { BindsTwoWayByDefault = true });//CHANGED
        public ICommand ValueCmd
        {
            get { return (ICommand)GetValue(ValueCmdProperty); }
            set { SetValue(ValueCmdProperty, value); }
        }