本文介绍了如何在WPF中的UserControl中将属性绑定到矩形的样式的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我有一个矩形，其样式定义为< Rectangle.Style>，但是样式内的数据绑定不起作用？如何解决该问题？
I have a rectangle with a style definded in < Rectangle.Style> but the data binding within the style is not working? How to fix the problem?
如果我覆盖矩形，它可以工作（但是动画不起作用）。但是如果我将其移至样式将无法再使用。
if I override the rectangle, it works (but the animation does not work). but if I moved it to the style it does not work any more.
<UserControl x:Class="MyProject.WPF.Controls.UI_MovingLine"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:local="clr-namespace:AutinPower.WPF.Controls"
mc:Ignorable="d"
Height="8" Width="auto">
<Rectangle x:Name="rectangleLine" Width="auto" Height="auto" Margin="0">
<Rectangle.Style>
<Style TargetType="{x:Type Rectangle}">
<Setter Property="RenderTransform">
<Setter.Value>
<RotateTransform Angle="0" />
</Setter.Value>
</Setter>
<Setter Property="Fill">
<Setter.Value>
<VisualBrush TileMode="Tile" Viewport="0,0,10,8" ViewportUnits="Absolute" Viewbox="0,0,8,8" ViewboxUnits="Absolute">
<VisualBrush.Transform>
<TranslateTransform X="0" Y="0" />
</VisualBrush.Transform>
<VisualBrush.Visual>
<Grid x:Name="gridMoving">
<Polygon x:Name="polygonMovingBack" Fill="{Binding LineBackColor}" Points="0,0 8,0 8,8 0,8" />
<Polygon x:Name="polygonMoving" Fill="{Binding LineBackgroundColor}" Points="{Binding IndicationShape}" />
</Grid>
</VisualBrush.Visual>
</VisualBrush>
</Setter.Value>
</Setter>
<Style.Triggers>
<DataTrigger Binding="{Binding AnimationStart}" Value="Start">
<DataTrigger.EnterActions>
<BeginStoryboard x:Name="StartAnimation">
<Storyboard>
<DoubleAnimation
From="0"
To="10"
RepeatBehavior="Forever"
Storyboard.TargetProperty="(Rectangle.Fill).(VisualBrush.Transform).(TranslateTransform.X)"
Duration="0:0:0.1" />
</Storyboard>
</BeginStoryboard>
</DataTrigger.EnterActions>
</DataTrigger>
<DataTrigger Binding="{Binding AnimationStart}" Value="Stop">
<DataTrigger.EnterActions>
<StopStoryboard x:Name="StopAnimation" BeginStoryboardName="StartAnimation"/>
</DataTrigger.EnterActions>
</DataTrigger>
</Style.Triggers>
</Style>
</Rectangle.Style>
</Rectangle>
</UserControl>
后面的代码
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using MyProject.Enum;
namespace MyProject.WPF.Controls
{
/// <summary>
/// Interaction logic for UI_MovingLine.xaml
/// </summary>
public partial class UI_MovingLine : UserControl, INotifyPropertyChanged
{
#region properties
public PointCollection IndicationPoints
{
get
{
return (PointCollection)GetValue(IndicationPointsProperty);
}
set
{
SetValue(IndicationPointsProperty, value);
}
}
public SolidColorBrush LineBackgroundColor
{
get
{
return (SolidColorBrush)GetValue(LineBackgroundColorProperty);
}
set
{
SetValue(LineBackgroundColorProperty, value);
}
}
public SolidColorBrush LineBackColor
{
get
{
return (SolidColorBrush)GetValue(LineBackColorProperty);
}
set
{
SetValue(LineBackColorProperty, value);
}
}
public PowerSystem.TransmitLineStatus TransmitLineStatus { get => _transmitLineStatus; set => _transmitLineStatus = value; }
public string AnimationStart {
get => _animationStart;
set {
_animationStart = value;
NotifyPropertyChanged("AnimationStart");
} }
public Action<object[]> NotifyUI { get; set; }
#endregion
#region fields
private PowerSystem.TransmitLineStatus _transmitLineStatus;
private Storyboard _storyboard;
private string _animationStart;
#endregion
public UI_MovingLine()
{
InitializeComponent();
rectangleLine.DataContext = this;
//gridMoving.DataContext = this;
//polygonMoving.DataContext = this;
AnimationStart = "Start";
}
public event PropertyChangedEventHandler PropertyChanged;
private void NotifyPropertyChanged(string info)
{
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(info));
}
}
public static readonly DependencyProperty IndicationPointsProperty
= DependencyProperty.Register("IndicationPoints", typeof(PointCollection), typeof(UI_MovingLine), new PropertyMetadata(new PointCollection(new List<Point> { new Point(0, 0), new Point(4, 0), new Point(8, 4), new Point(4, 8), new Point(0, 8), new Point(4, 4) })/*, new PropertyChangedCallback(OnIndicationPointsChanged)*/));
public static readonly DependencyProperty LineBackgroundColorProperty
= DependencyProperty.Register("LineBackgroundColor", typeof(SolidColorBrush), typeof(UI_MovingLine), new PropertyMetadata(new SolidColorBrush(Colors.Gray)/*, new PropertyChangedCallback(OnLineBackgroundColorChanged)*/));
public static readonly DependencyProperty LineBackColorProperty
= DependencyProperty.Register("LineBackColor", typeof(SolidColorBrush), typeof(UI_MovingLine), new PropertyMetadata(new SolidColorBrush(Colors.Gray)/*, new PropertyChangedCallback(OnLineBackColorChanged)*/));
public static readonly DependencyProperty AnimationStartProperty
= DependencyProperty.Register("AnimationStart", typeof(string), typeof(UI_MovingLine), new PropertyMetadata("Stop"/*, new PropertyChangedCallback(AnimationStartChanged)*/));
public void LineMovingToNomal()
{
try
{
IndicationPoints = new PointCollection(new List<Point> { new Point(0, 0), new Point(4, 0), new Point(8, 4), new Point(4, 8), new Point(0, 8), new Point(4, 4) });
LineBackgroundColor = new SolidColorBrush(Colors.DodgerBlue);
LineBackColor = new SolidColorBrush(Colors.White);
AnimationStart = "Start";
}
catch
{
}
}
}
样式中的数据绑定应该正常工作
data-binding within the Style should work properly
推荐答案
似乎没有解决方案这个...我必须通过定义不同的样式来解决，并相应地应用它们。我很确定这不是推荐的方法，但是至少目前对我有用。我希望任何知道如何解决此问题的人都可以在这里慷慨地发布您的答案。
It seems there is no solution for this... I have to work around by defining different styles and apply them accordingly. I'm quite sure it's not the recommended way to do this, but at least it works for me at this moment. I hope anyone who know how to solve this problem can generously post your answers here.
我当前的解决方案/解决方法是（单击以查看图片）：
My current solution/work around is (click to see the images):xmal code behind
这篇关于如何在WPF中的UserControl中将属性绑定到矩形的样式的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！