C# 在 WPF 控件上显示“加载”指示器的最佳方式是什么
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时间：2020-08-03 11:37:35 来源:igfitidea点击:
What is the best way to display a 'loading' indicator on a WPF control
提问by pro
In C#.Net WPF During UserControl.Load ->
在 C#.Net WPF 中 UserControl.Load ->
What is the best way of showing a whirling circle / 'Loading' Indicator on the UserControl until it has finished gathering data and rendering it's contents?
在 UserControl 完成收集数据并呈现其内容之前，在 UserControl 上显示旋转圆圈/“正在加载”指示器的最佳方式是什么？
采纳答案by dcstraw
I generally would create a layout like this:
我通常会创建这样的布局：
<Grid>
<Grid x:Name="MainContent" IsEnabled="False">
...
</Grid>
<Grid x:Name="LoadingIndicatorPanel">
...
</Grid>
</Grid>
Then I load the data on a worker thread, and when it's finished I update the UI under the "MainContent" grid and enable the grid, then set the LoadingIndicatorPanel's Visibility to Collapsed.
然后我在工作线程上加载数据，完成后我更新“MainContent”网格下的 UI 并启用网格，然后将 LoadingIndicatorPanel 的 Visibility 设置为 Collapsed。
I'm not sure if this is what you were asking or if you wanted to know how to show an animation in the loading label. If it's the animation you're after, please update your question to be more specific.
我不确定这是否是您的要求，或者您是否想知道如何在加载标签中显示动画。如果是您想要的动画，请更新您的问题以使其更具体。
回答by Ian Oakes
This is something that I was working on just recently in order to create a loading animation. This xaml will produce an animated ring of circles.
这是我最近为了创建加载动画而在做的事情。这个 xaml 将产生一个圆形的动画环。
My initial idea was to create an adorner and use this animation as it's content, then to display the loading animation in the adorners layer and grey out the content underneath.
我最初的想法是创建一个装饰器并使用这个动画作为它的内容，然后在装饰器层中显示加载动画并将下面的内容变灰。
Haven't had the chance to finish it yet, so I thought I would just post the animation for your reference.
还没有机会完成，所以我想我会发布动画供您参考。
<Window
x:Class="WpfApplication2.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Window1"
Height="300"
Width="300"
>
<Window.Resources>
<Color x:Key="FilledColor" A="255" B="155" R="155" G="155"/>
<Color x:Key="UnfilledColor" A="0" B="155" R="155" G="155"/>
<Storyboard x:Key="Animation0" FillBehavior="Stop" BeginTime="00:00:00.0" RepeatBehavior="Forever">
<ColorAnimationUsingKeyFrames Storyboard.TargetName="_00" Storyboard.TargetProperty="(Shape.Fill).(SolidColorBrush.Color)">
<SplineColorKeyFrame KeyTime="00:00:00.0" Value="{StaticResource FilledColor}"/>
<SplineColorKeyFrame KeyTime="00:00:01.6" Value="{StaticResource UnfilledColor}"/>
</ColorAnimationUsingKeyFrames>
</Storyboard>
<Storyboard x:Key="Animation1" BeginTime="00:00:00.2" RepeatBehavior="Forever">
<ColorAnimationUsingKeyFrames Storyboard.TargetName="_01" Storyboard.TargetProperty="(Shape.Fill).(SolidColorBrush.Color)">
<SplineColorKeyFrame KeyTime="00:00:00.0" Value="{StaticResource FilledColor}"/>
<SplineColorKeyFrame KeyTime="00:00:01.6" Value="{StaticResource UnfilledColor}"/>
</ColorAnimationUsingKeyFrames>
</Storyboard>
<Storyboard x:Key="Animation2" BeginTime="00:00:00.4" RepeatBehavior="Forever">
<ColorAnimationUsingKeyFrames Storyboard.TargetName="_02" Storyboard.TargetProperty="(Shape.Fill).(SolidColorBrush.Color)">
<SplineColorKeyFrame KeyTime="00:00:00.0" Value="{StaticResource FilledColor}"/>
<SplineColorKeyFrame KeyTime="00:00:01.6" Value="{StaticResource UnfilledColor}"/>
</ColorAnimationUsingKeyFrames>
</Storyboard>
<Storyboard x:Key="Animation3" BeginTime="00:00:00.6" RepeatBehavior="Forever">
<ColorAnimationUsingKeyFrames Storyboard.TargetName="_03" Storyboard.TargetProperty="(Shape.Fill).(SolidColorBrush.Color)">
<SplineColorKeyFrame KeyTime="00:00:00.0" Value="{StaticResource FilledColor}"/>
<SplineColorKeyFrame KeyTime="00:00:01.6" Value="{StaticResource UnfilledColor}"/>
</ColorAnimationUsingKeyFrames>
</Storyboard>
<Storyboard x:Key="Animation4" BeginTime="00:00:00.8" RepeatBehavior="Forever">
<ColorAnimationUsingKeyFrames Storyboard.TargetName="_04" Storyboard.TargetProperty="(Shape.Fill).(SolidColorBrush.Color)">
<SplineColorKeyFrame KeyTime="00:00:00.0" Value="{StaticResource FilledColor}"/>
<SplineColorKeyFrame KeyTime="00:00:01.6" Value="{StaticResource UnfilledColor}"/>
</ColorAnimationUsingKeyFrames>
</Storyboard>
<Storyboard x:Key="Animation5" BeginTime="00:00:01.0" RepeatBehavior="Forever">
<ColorAnimationUsingKeyFrames Storyboard.TargetName="_05" Storyboard.TargetProperty="(Shape.Fill).(SolidColorBrush.Color)">
<SplineColorKeyFrame KeyTime="00:00:00.0" Value="{StaticResource FilledColor}"/>
<SplineColorKeyFrame KeyTime="00:00:01.6" Value="{StaticResource UnfilledColor}"/>
</ColorAnimationUsingKeyFrames>
</Storyboard>
<Storyboard x:Key="Animation6" BeginTime="00:00:01.2" RepeatBehavior="Forever">
<ColorAnimationUsingKeyFrames Storyboard.TargetName="_06" Storyboard.TargetProperty="(Shape.Fill).(SolidColorBrush.Color)">
<SplineColorKeyFrame KeyTime="00:00:00.0" Value="{StaticResource FilledColor}"/>
<SplineColorKeyFrame KeyTime="00:00:01.6" Value="{StaticResource UnfilledColor}"/>
</ColorAnimationUsingKeyFrames>
</Storyboard>
<Storyboard x:Key="Animation7" BeginTime="00:00:01.4" RepeatBehavior="Forever">
<ColorAnimationUsingKeyFrames Storyboard.TargetName="_07" Storyboard.TargetProperty="(Shape.Fill).(SolidColorBrush.Color)">
<SplineColorKeyFrame KeyTime="00:00:00.0" Value="{StaticResource FilledColor}"/>
<SplineColorKeyFrame KeyTime="00:00:01.6" Value="{StaticResource UnfilledColor}"/>
</ColorAnimationUsingKeyFrames>
</Storyboard>
</Window.Resources>
<Window.Triggers>
<EventTrigger RoutedEvent="FrameworkElement.Loaded">
<BeginStoryboard Storyboard="{StaticResource Animation0}"/>
<BeginStoryboard Storyboard="{StaticResource Animation1}"/>
<BeginStoryboard Storyboard="{StaticResource Animation2}"/>
<BeginStoryboard Storyboard="{StaticResource Animation3}"/>
<BeginStoryboard Storyboard="{StaticResource Animation4}"/>
<BeginStoryboard Storyboard="{StaticResource Animation5}"/>
<BeginStoryboard Storyboard="{StaticResource Animation6}"/>
<BeginStoryboard Storyboard="{StaticResource Animation7}"/>
</EventTrigger>
</Window.Triggers>
<Canvas>
<Canvas Canvas.Left="21.75" Canvas.Top="14" Height="81.302" Width="80.197">
<Canvas.Resources>
<Style TargetType="Ellipse">
<Setter Property="Width" Value="15"/>
<Setter Property="Height" Value="15" />
<Setter Property="Fill" Value="#FFFFFFFF" />
</Style>
</Canvas.Resources>
<Ellipse x:Name="_00" Canvas.Left="24.75" Canvas.Top="50"/>
<Ellipse x:Name="_01" Canvas.Top="36" Canvas.Left="29.5"/>
<Ellipse x:Name="_02" Canvas.Left="43.5" Canvas.Top="29.75"/>
<Ellipse x:Name="_03" Canvas.Left="57.75" Canvas.Top="35.75"/>
<Ellipse x:Name="_04" Canvas.Left="63.5" Canvas.Top="49.75" />
<Ellipse x:Name="_05" Canvas.Left="57.75" Canvas.Top="63.5"/>
<Ellipse x:Name="_06" Canvas.Left="43.75" Canvas.Top="68.75"/>
<Ellipse x:Name="_07" Canvas.Top="63.25" Canvas.Left="30" />
<Ellipse Stroke="{x:Null}" Width="39.5" Height="39.5" Canvas.Left="31.75" Canvas.Top="37" Fill="{x:Null}"/>
</Canvas>
</Canvas>
</Window>
回答by Christopher Scott
If you are running it on Vista, you could also just use the default wait cursor.
如果您在 Vista 上运行它，您也可以只使用默认的等待光标。
this.Cursor = Cursors.Wait;
this.Cursor = Cursors.Wait;
回答by Peter Wone
Use BusyIndicator. It's a silverlight thing.
使用 BusyIndicator。这是一件银光闪闪的事情。
回答by VadimB
You can show animated gif as loading element
您可以将动画 gif 显示为加载元素
XAML
XAML
<WindowsFormsHost>
<winForms:PictureBox x:Name="pictureBoxLoading" />
</WindowsFormsHost>
CODE BEHIND
代码隐藏
pictureBoxLoading.Image = System.Drawing.Image.FromFile("images/ajax-loader.gif");
回答by Sven Hecht
I improved on Ian Oakes Design and build an scalable version of his loading indicator:
我改进了 Ian Oakes Design 并构建了他的加载指示器的可扩展版本：
<UserControl x:Class="Mesap.Framework.UI.Controls.BusyIndicator"
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"
mc:Ignorable="d" Name="Root" Foreground="#9b9b9b"
d:DesignHeight="100" d:DesignWidth="100">
<Grid>
<Grid.Resources>
<Storyboard x:Key="Animation0" FillBehavior="Stop" BeginTime="00:00:00.0" RepeatBehavior="Forever">
<DoubleAnimationUsingKeyFrames Storyboard.TargetName="E00" Storyboard.TargetProperty="Opacity">
<LinearDoubleKeyFrame KeyTime="00:00:00.0" Value="1"/>
<LinearDoubleKeyFrame KeyTime="00:00:01.6" Value="0"/>
</DoubleAnimationUsingKeyFrames>
</Storyboard>
<Storyboard x:Key="Animation1" BeginTime="00:00:00.2" RepeatBehavior="Forever">
<DoubleAnimationUsingKeyFrames Storyboard.TargetName="E01" Storyboard.TargetProperty="Opacity">
<LinearDoubleKeyFrame KeyTime="00:00:00.0" Value="1"/>
<LinearDoubleKeyFrame KeyTime="00:00:01.6" Value="0"/>
</DoubleAnimationUsingKeyFrames>
</Storyboard>
<Storyboard x:Key="Animation2" BeginTime="00:00:00.4" RepeatBehavior="Forever">
<DoubleAnimationUsingKeyFrames Storyboard.TargetName="E02" Storyboard.TargetProperty="Opacity">
<LinearDoubleKeyFrame KeyTime="00:00:00.0" Value="1"/>
<LinearDoubleKeyFrame KeyTime="00:00:01.6" Value="0"/>
</DoubleAnimationUsingKeyFrames>
</Storyboard>
<Storyboard x:Key="Animation3" BeginTime="00:00:00.6" RepeatBehavior="Forever">
<DoubleAnimationUsingKeyFrames Storyboard.TargetName="E03" Storyboard.TargetProperty="Opacity">
<LinearDoubleKeyFrame KeyTime="00:00:00.0" Value="1"/>
<LinearDoubleKeyFrame KeyTime="00:00:01.6" Value="0"/>
</DoubleAnimationUsingKeyFrames>
</Storyboard>
<Storyboard x:Key="Animation4" BeginTime="00:00:00.8" RepeatBehavior="Forever">
<DoubleAnimationUsingKeyFrames Storyboard.TargetName="E04" Storyboard.TargetProperty="Opacity">
<LinearDoubleKeyFrame KeyTime="00:00:00.0" Value="1"/>
<LinearDoubleKeyFrame KeyTime="00:00:01.6" Value="0"/>
</DoubleAnimationUsingKeyFrames>
</Storyboard>
<Storyboard x:Key="Animation5" BeginTime="00:00:01.0" RepeatBehavior="Forever">
<DoubleAnimationUsingKeyFrames Storyboard.TargetName="E05" Storyboard.TargetProperty="Opacity">
<LinearDoubleKeyFrame KeyTime="00:00:00.0" Value="1"/>
<LinearDoubleKeyFrame KeyTime="00:00:01.6" Value="0"/>
</DoubleAnimationUsingKeyFrames>
</Storyboard>
<Storyboard x:Key="Animation6" BeginTime="00:00:01.2" RepeatBehavior="Forever">
<DoubleAnimationUsingKeyFrames Storyboard.TargetName="E06" Storyboard.TargetProperty="Opacity">
<LinearDoubleKeyFrame KeyTime="00:00:00.0" Value="1"/>
<LinearDoubleKeyFrame KeyTime="00:00:01.6" Value="0"/>
</DoubleAnimationUsingKeyFrames>
</Storyboard>
<Storyboard x:Key="Animation7" BeginTime="00:00:01.4" RepeatBehavior="Forever">
<DoubleAnimationUsingKeyFrames Storyboard.TargetName="E07" Storyboard.TargetProperty="Opacity">
<LinearDoubleKeyFrame KeyTime="00:00:00.0" Value="1"/>
<LinearDoubleKeyFrame KeyTime="00:00:01.6" Value="0"/>
</DoubleAnimationUsingKeyFrames>
</Storyboard>
<Style TargetType="Ellipse">
<Setter Property="Fill" Value="{Binding ElementName=Root, Path=Foreground}"/>
</Style>
</Grid.Resources>
<Grid.Triggers>
<EventTrigger RoutedEvent="FrameworkElement.Loaded">
<BeginStoryboard Storyboard="{StaticResource Animation0}"/>
<BeginStoryboard Storyboard="{StaticResource Animation1}"/>
<BeginStoryboard Storyboard="{StaticResource Animation2}"/>
<BeginStoryboard Storyboard="{StaticResource Animation3}"/>
<BeginStoryboard Storyboard="{StaticResource Animation4}"/>
<BeginStoryboard Storyboard="{StaticResource Animation5}"/>
<BeginStoryboard Storyboard="{StaticResource Animation6}"/>
<BeginStoryboard Storyboard="{StaticResource Animation7}"/>
</EventTrigger>
</Grid.Triggers>
<Grid.ColumnDefinitions>
<ColumnDefinition/>
<ColumnDefinition/>
<ColumnDefinition/>
<ColumnDefinition/>
<ColumnDefinition/>
<ColumnDefinition/>
<ColumnDefinition/>
<ColumnDefinition/>
<ColumnDefinition/>
<ColumnDefinition/>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
</Grid.RowDefinitions>
<Ellipse x:Name="E00" Grid.Row="4" Grid.Column="0" Grid.RowSpan="3" Grid.ColumnSpan="3" Width="Auto" Height="Auto" Opacity="0"/>
<Ellipse x:Name="E01" Grid.Row="1" Grid.Column="1" Grid.RowSpan="3" Grid.ColumnSpan="3" Width="Auto" Height="Auto" Opacity="0" />
<Ellipse x:Name="E02" Grid.Row="0" Grid.Column="4" Grid.RowSpan="3" Grid.ColumnSpan="3" Width="Auto" Height="Auto" Opacity="0" />
<Ellipse x:Name="E03" Grid.Row="1" Grid.Column="7" Grid.RowSpan="3" Grid.ColumnSpan="3" Width="Auto" Height="Auto" Opacity="0" />
<Ellipse x:Name="E04" Grid.Row="4" Grid.Column="8" Grid.RowSpan="3" Grid.ColumnSpan="3" Width="Auto" Height="Auto" Opacity="0" />
<Ellipse x:Name="E05" Grid.Row="7" Grid.Column="7" Grid.RowSpan="3" Grid.ColumnSpan="3" Width="Auto" Height="Auto" Opacity="0" />
<Ellipse x:Name="E06" Grid.Row="8" Grid.Column="4" Grid.RowSpan="3" Grid.ColumnSpan="3" Width="Auto" Height="Auto" Opacity="0" />
<Ellipse x:Name="E07" Grid.Row="7" Grid.Column="1" Grid.RowSpan="3" Grid.ColumnSpan="3" Width="Auto" Height="Auto" Opacity="0" />
</Grid>
</UserControl>
