C# WPF 基础等待动画Loading...动态转圈 Storyboard ContentControl

这个效果图...直接放上吧，实际是转圈效果，使用起来最方便的一种。

【这是个基础版，灵活度很高】

Xaml

绘制Loading图案，及触发的动画效果，实际控制的每个组件 Opacity - 透明度属性。

<Style TargetType="{x:Type local:LoadingControl}">
        <Setter Property="FocusVisualStyle" Value="{x:Null}"/>
        <Setter Property="Focusable" Value="False"/>
        <Setter Property="HorizontalContentAlignment" Value="Center"/>
        <Setter Property="VerticalContentAlignment" Value="Center"/>
        <Setter Property="Foreground" Value="Red"/>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type local:LoadingControl}">
                    <Grid Width="{TemplateBinding Width}" Height="{TemplateBinding Height}" VerticalAlignment="Center" > 
                            <Grid.Resources>
                                <DrawingBrush x:Key="brush" Stretch="None" AlignmentX="Center" AlignmentY="Top">
                                    <DrawingBrush.Drawing>
                                    <GeometryDrawing Brush="Red">
                                            <GeometryDrawing.Geometry>
                                            <EllipseGeometry RadiusX="{Binding RadiusX, RelativeSource={RelativeSource TemplatedParent}}" 
                                                             RadiusY="{Binding RadiusY, RelativeSource={RelativeSource TemplatedParent}}"/>
                                            </GeometryDrawing.Geometry>
                                        </GeometryDrawing>
                                    </DrawingBrush.Drawing>
                                </DrawingBrush>
                            </Grid.Resources>

                            <!--绘制图案-->
                            <Rectangle x:Name="r01" Fill="{StaticResource brush}" Opacity="0.3" RenderTransformOrigin="0.5,0.5">
                                <Rectangle.RenderTransform>
                                    <RotateTransform Angle="0"/>
                                </Rectangle.RenderTransform>
                            </Rectangle>
                            <Rectangle x:Name="r02" Fill="{StaticResource brush}" Opacity="0.3" RenderTransformOrigin="0.5,0.5">
                                <Rectangle.RenderTransform>
                                    <RotateTransform Angle="30"/>
                                </Rectangle.RenderTransform>
                            </Rectangle>
                            <Rectangle x:Name="r03" Fill="{StaticResource brush}" Opacity="0.3" RenderTransformOrigin="0.5,0.5">
                                <Rectangle.RenderTransform>
                                    <RotateTransform Angle="60"/>
                                </Rectangle.RenderTransform>
                            </Rectangle>
                            <Rectangle x:Name="r04" Fill="{StaticResource brush}" Opacity="0.3" RenderTransformOrigin="0.5,0.5">
                                <Rectangle.RenderTransform>
                                    <RotateTransform Angle="90"/>
                                </Rectangle.RenderTransform>
                            </Rectangle>
                            <Rectangle x:Name="r05" Fill="{StaticResource brush}" Opacity="0.3" RenderTransformOrigin="0.5,0.5">
                                <Rectangle.RenderTransform>
                                    <RotateTransform Angle="120"/>
                                </Rectangle.RenderTransform>
                            </Rectangle>
                            <Rectangle x:Name="r06" Fill="{StaticResource brush}" Opacity="0.3" RenderTransformOrigin="0.5,0.5">
                                <Rectangle.RenderTransform>
                                    <RotateTransform Angle="150"/>
                                </Rectangle.RenderTransform>
                            </Rectangle>
                            <Rectangle x:Name="r07" Fill="{StaticResource brush}" Opacity="0.3" RenderTransformOrigin="0.5,0.5">
                                <Rectangle.RenderTransform>
                                    <RotateTransform Angle="180"/>
                                </Rectangle.RenderTransform>
                            </Rectangle>
                            <Rectangle x:Name="r08" Fill="{StaticResource brush}" Opacity="0.3" RenderTransformOrigin="0.5,0.5">
                                <Rectangle.RenderTransform>
                                    <RotateTransform Angle="210"/>
                                </Rectangle.RenderTransform>
                            </Rectangle>
                            <Rectangle x:Name="r09" Fill="{StaticResource brush}" Opacity="0.3" RenderTransformOrigin="0.5,0.5">
                                <Rectangle.RenderTransform>
                                    <RotateTransform Angle="240"/>
                                </Rectangle.RenderTransform>
                            </Rectangle>
                            <Rectangle x:Name="r10" Fill="{StaticResource brush}" Opacity="0.3" RenderTransformOrigin="0.5,0.5">
                                <Rectangle.RenderTransform>
                                    <RotateTransform Angle="270"/>
                                </Rectangle.RenderTransform>
                            </Rectangle>
                            <Rectangle x:Name="r11" Fill="{StaticResource brush}" Opacity="0.3" RenderTransformOrigin="0.5,0.5">
                                <Rectangle.RenderTransform>
                                    <RotateTransform Angle="300"/>
                                </Rectangle.RenderTransform>
                            </Rectangle>
                            <Rectangle x:Name="r12" Fill="{StaticResource brush}" Opacity="0.3" RenderTransformOrigin="0.5,0.5">
                                <Rectangle.RenderTransform>
                                    <RotateTransform Angle="330"/>
                                </Rectangle.RenderTransform>
                            </Rectangle>

                            <Grid.Triggers>
                                <!--动画效果 可以放别的 事件 或 属性 触发-->
                                <EventTrigger RoutedEvent="Grid.Loaded">
                                    <BeginStoryboard>
                                        <Storyboard RepeatBehavior="Forever">
                                            <DoubleAnimation Storyboard.TargetName="r01" Storyboard.TargetProperty="Opacity" AutoReverse="True" Duration="0:0:0.39333" BeginTime="0:0:0.00000" To="1"/>
                                            <DoubleAnimation Storyboard.TargetName="r02" Storyboard.TargetProperty="Opacity" AutoReverse="True" Duration="0:0:0.39333" BeginTime="0:0:0.08333" To="1"/>
                                            <DoubleAnimation Storyboard.TargetName="r03" Storyboard.TargetProperty="Opacity" AutoReverse="True" Duration="0:0:0.39333" BeginTime="0:0:0.16666" To="1"/>
                                            <DoubleAnimation Storyboard.TargetName="r04" Storyboard.TargetProperty="Opacity" AutoReverse="True" Duration="0:0:0.39333" BeginTime="0:0:0.24999" To="1"/>
                                            <DoubleAnimation Storyboard.TargetName="r05" Storyboard.TargetProperty="Opacity" AutoReverse="True" Duration="0:0:0.39333" BeginTime="0:0:0.33332" To="1"/>
                                            <DoubleAnimation Storyboard.TargetName="r06" Storyboard.TargetProperty="Opacity" AutoReverse="True" Duration="0:0:0.39333" BeginTime="0:0:0.41665" To="1"/>
                                            <DoubleAnimation Storyboard.TargetName="r07" Storyboard.TargetProperty="Opacity" AutoReverse="True" Duration="0:0:0.39333" BeginTime="0:0:0.49998" To="1"/>
                                            <DoubleAnimation Storyboard.TargetName="r08" Storyboard.TargetProperty="Opacity" AutoReverse="True" Duration="0:0:0.39333" BeginTime="0:0:0.58331" To="1"/>
                                            <DoubleAnimation Storyboard.TargetName="r09" Storyboard.TargetProperty="Opacity" AutoReverse="True" Duration="0:0:0.39333" BeginTime="0:0:0.66664" To="1"/>
                                            <DoubleAnimation Storyboard.TargetName="r10" Storyboard.TargetProperty="Opacity" AutoReverse="True" Duration="0:0:0.39333" BeginTime="0:0:0.74997" To="1"/>
                                            <DoubleAnimation Storyboard.TargetName="r11" Storyboard.TargetProperty="Opacity" AutoReverse="True" Duration="0:0:0.39333" BeginTime="0:0:0.83330" To="1"/>
                                            <DoubleAnimation Storyboard.TargetName="r12" Storyboard.TargetProperty="Opacity" AutoReverse="True" Duration="0:0:0.39333" BeginTime="0:0:0.91663" To="1"/>
                                        </Storyboard>
                                    </BeginStoryboard>
                                </EventTrigger>
                            </Grid.Triggers>
                        </Grid> 
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

如果是想直接用 Storyboard 动态效果，那就：（示例只是随便找的Code，不是Loading了哈~）

// i:Interaction.Triggers -- i:EventTrigger -- i:InvokeCommandAction -- 无关的插曲

//比如 DockPanel 的样式里，想在 Event 加入动态效果
<DockPanel.Triggers>
    <!--MouseEnter时 Storyboard效果-->
    <EventTrigger RoutedEvent="MouseEnter">
		<BeginStoryboard>
			<Storyboard>
				<ColorAnimation Storyboard.TargetProperty="(Control.BorderBrush).(SolidColorBrush.Color)" 
					Storyboard.TargetName="BranchAccountingBorder" Duration="0:0:0.1" 
					From="#E7E7E8" To="#E0301E" AutoReverse="False" />
			</Storyboard>
		</BeginStoryboard>
	</EventTrigger>
	<EventTrigger RoutedEvent="MouseLeave">
		<BeginStoryboard>
			<Storyboard>
				<ColorAnimation Storyboard.TargetProperty="(Control.BorderBrush).(SolidColorBrush.Color)" 
					Storyboard.TargetName="BranchAccountingBorder" Duration="0:0:0.1" 
					From="#E0301E" To="#E7E7E8" AutoReverse="False" />
			</Storyboard>
		</BeginStoryboard>
	</EventTrigger>
</DockPanel.Triggers>

<!--在没有 Command 属性的控件加入交互命令，使用i : 引用 xmlns:i="clr-namespace:System.Windows.Interactivity;assembly=System.Windows.Interactivity" -->
<i:Interaction.Triggers>
	<i:EventTrigger EventName="MouseLeftButtonDown">
		<i:InvokeCommandAction Command="{Binding CheckTestCommand}"></i:InvokeCommandAction>
	</i:EventTrigger>
</i:Interaction.Triggers>

LoadingControl.cs 可省略

提供使用处的 X Y 属性（外观效果），用的时候调整就看得出来啦

using System;
using System.Windows;
using System.Windows.Controls;

namespace MyTest.Control
{
    public class LoadingControl : ContentControl
    {
        /// <summary>
        /// Y轴半径
        /// </summary>
        public static readonly DependencyProperty RadiusYPropertyProperty;

        /// <summary>
        /// X轴半径
        /// </summary>
        public static readonly DependencyProperty RadiusXPropertyProperty;

        /// <summary>
        /// 静态构造方法
        /// </summary>
        static LoadingControl()
        {
            DefaultStyleKeyProperty.OverrideMetadata(typeof(LoadingControl), new FrameworkPropertyMetadata(typeof(LoadingControl)));
            RadiusYPropertyProperty = DependencyProperty.Register("RadiusY", typeof(string), typeof(LoadingControl), new PropertyMetadata("0"));
            RadiusXPropertyProperty = DependencyProperty.Register("RadiusX", typeof(string), typeof(LoadingControl), new PropertyMetadata("0"));
        }

        /// <summary>
        /// 构造方法
        /// </summary>
        public LoadingControl()
        {

        }

        /// <summary>
        /// X轴半径
        /// </summary>
        public string RadiusX
        {
            get { return (string)GetValue(RadiusXPropertyProperty); }
            set { SetValue(RadiusXPropertyProperty, value); }
        }

        /// <summary>
        /// Y轴半径
        /// </summary>
        public string RadiusY
        {
            get { return (string)GetValue(RadiusYPropertyProperty); }
            set { SetValue(RadiusYPropertyProperty, value); }
        }
    }
}

xaml 使用

其实就引用这个控件，然后调整属性就OK 了。

由于动画效果，示例里是加载的时候就一直转动，所以控制 Visibility 属性就可以了。

也可以自定义其他属性或事件，触发转动、停止效果。

<mycontrols:LoadingControl Visibility="Collapsed" RadiusX="1.2" RadiusY="3" Width="20" Height="20"/>

【这是个基础版，灵活度很高】可以改样式、触发时机......

C# WPF 基础等待动画Loading...动态转圈 Storyboard ContentControl

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