• wpf 中的 自定义控件的 binding


    XMl 代码

    -------------------------------------------------------------------------------------------------------------------------------

    <UserControl

        x:Class="Xiaowei.Controls.PermissionBlock"

        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

        xmlns:local="using:Xiaowei.Controls"

        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"

        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"

        xmlns:tk="using:Microsoft.Toolkit.Uwp.UI.Controls"

        mc:Ignorable="d"

        d:DesignHeight="200"

        d:DesignWidth="480"

        Height="76"

        x:Name="permissionBlock">

        <UserControl.Resources>

            <Storyboard x:Name="GIFStoryBoard">

                <DoubleAnimation 

                x:Name="GIFDoubleAnimation"

                EnableDependentAnimation="True"

                To="176" Duration="00:00:0.3"

                Storyboard.TargetName="borderGrid"

                Storyboard.TargetProperty="Height">

                    <DoubleAnimation.EasingFunction>

                        <PowerEase EasingMode="EaseInOut"/>

                    </DoubleAnimation.EasingFunction>

                </DoubleAnimation>

                <DoubleAnimation 

                    x:Name="GIFBorderDoubleAnimation"

                    EnableDependentAnimation="True"

                    To="1" Duration="00:00:0.3"

                    Storyboard.TargetName="shadowBorder"

                    Storyboard.TargetProperty="Opacity">

                    <DoubleAnimation.EasingFunction>

                        <PowerEase EasingMode="EaseInOut"/>

                    </DoubleAnimation.EasingFunction>

                </DoubleAnimation>

            </Storyboard>

        </UserControl.Resources>

        <Grid x:Name="borderGrid" Height="76" VerticalAlignment="Top" Margin="0,0,0,-200">

            <tk:DropShadowPanel Opacity="0"

                        x:Name="shadowBorder"

                        VerticalContentAlignment="Stretch" 

                        Margin="14,0,14,8"

                        HorizontalContentAlignment="Stretch">

                <Grid Background="White"

                      CornerRadius="7" >

                </Grid>

            </tk:DropShadowPanel>

            <Grid Background="White" CornerRadius="7" Margin="14,0,14,8" VerticalAlignment="Stretch" PointerEntered="PointerEntered" PointerExited="PointerExited">

                <Grid.RowDefinitions>

                    <RowDefinition Height="auto"/>

                    <RowDefinition Height="1*"/>

                </Grid.RowDefinitions>

                <Image 

                        Width="28" 

                        Height="28" 

                        Margin="12,20,0,20" 

                        HorizontalAlignment="Left" 

                        VerticalAlignment="Center"

                        Source="{Binding Icon, ElementName=permissionBlock, Mode=OneWay}"

                           />

                <TextBlock 

                    HorizontalAlignment="Left" 

                    VerticalAlignment="Top"

                    FontSize="16"

                    Foreground="#272727"

                    Margin="48,12,0,0"

                    Text="{Binding Title, ElementName=permissionBlock, Mode=OneWay}">

                </TextBlock>

                <TextBlock 

                        Foreground="#666666"

                        HorizontalAlignment="Left" 

                        VerticalAlignment="Bottom"

                        FontSize="14"

                        FontWeight="Light"

                        Text="{Binding Comment, ElementName=permissionBlock, Mode=OneWay}"

                        Margin="48,0,0,11">

                </TextBlock>

                <Button 

                    Style="{ThemeResource ButtonStyleTransBack}" 

                    Content="开启"

                    Click="ActiveButton_Click"

                    HorizontalAlignment="Right"

                    Margin="0,0,25,0"

                    Foreground="#4367FC"

                    FontSize="16"/>

                <Image 

                        Grid.Row="1" Height="119" Margin="12,0,12,12"

                    Source="{Binding GIFSource, ElementName=permissionBlock, Mode=OneWay}"

                    />

            </Grid>

        </Grid>

    </UserControl>

    C# code

    -----------------------------------------------------------------------------------------------------------------------------------

    using System;

    using Windows.UI;

    using Windows.UI.Xaml;

    using Windows.UI.Xaml.Controls;

    using Windows.UI.Xaml.Media;

    // The User Control item template is documented at https://go.microsoft.com/fwlink/?LinkId=234236

    namespace Xiaowei.Controls

    {

        public sealed partial class PermissionBlock : UserControl

        {

            public static DependencyProperty TitleProperty { get; } = DependencyProperty.Register(

                "Title", typeof(string), typeof(PermissionBlock), new PropertyMetadata("")

                );

            public string Title

            {

                get

                {

                    return (string)GetValue(TitleProperty);

                }

                set

                {

                    SetValue(TitleProperty, value);

                }

            }

            public static DependencyProperty CommentProperty { get; } = DependencyProperty.Register(

                "Comment", typeof(string), typeof(PermissionBlock), new PropertyMetadata("")

                );

            public string Comment

            {

                get

                {

                    return (string)GetValue(CommentProperty);

                }

                set

                {

                    SetValue(CommentProperty, value);

                }

            }

            public static DependencyProperty IconProperty { get; } = DependencyProperty.Register(

                "Icon", typeof(ImageSource), typeof(PermissionBlock), new PropertyMetadata(null)

                );

            public ImageSource Icon

            {

                get

                {

                    return (ImageSource)GetValue(IconProperty);

                }

                set

                {

                    SetValue(IconProperty, value);

                }

            }

            public static DependencyProperty GIFSourceProperty { get; } = DependencyProperty.Register(

                "GIFSource", typeof(ImageSource), typeof(PermissionBlock), new PropertyMetadata(null)

                );

            public ImageSource GIFSource

            {

                get

                {

                    return (ImageSource)GetValue(GIFSourceProperty);

                }

                set

                {

                    SetValue(GIFSourceProperty, value);

                }

            }

            private void ShowGif()

            {

                GIFDoubleAnimation.To = 210;

                GIFBorderDoubleAnimation.To = 1;

                GIFStoryBoard.Begin();

            }

            private void HideGif()

            {

                GIFDoubleAnimation.To = 76;

                GIFBorderDoubleAnimation.To = 0;

                GIFStoryBoard.Begin();

            }

            public static DependencyProperty IsAllowProperty { get; } = DependencyProperty.Register(

                "IsAllow", typeof(bool), typeof(PermissionBlock), new PropertyMetadata(false, IsAllowPropertyChanged)

                );

            private static void IsAllowPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)

            {

                if ((bool)e.NewValue)

                {

                    ((PermissionBlock)d).Hide();

                }

                else

                {

                    ((PermissionBlock)d).Show();

                }

            }

            public bool IsAllow

            {

                get

                {

                    return (bool)GetValue(IsAllowProperty);

                }

                set

                {

                    SetValue(IsAllowProperty, value);

                }

            }

            private void Show()

            {

                Visibility = Visibility.Visible;

            }

            private void Hide()

            {

                Visibility = Visibility.Collapsed;

                HideGif();

            }

            public PermissionBlock()

            {

                this.InitializeComponent();

            }

            public event Action Click;

            private void ActiveButton_Click(object sender, RoutedEventArgs e)

            {

                Click?.Invoke();

            }

            private void PointerEntered(object sender, Windows.UI.Xaml.Input.PointerRoutedEventArgs e)

            {

                ShowGif();

            }

            private void PointerExited(object sender, Windows.UI.Xaml.Input.PointerRoutedEventArgs e)

            {

                HideGif();

            }

        }

    }

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  • 原文地址:https://www.cnblogs.com/bruce1992/p/14899879.html
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