首先，创建一个用户控件实现动画Loading的功能：
<UserControl x:Class="K.Controls.Controls.LoadingControl"
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:K.Controls.Controls"
mc:Ignorable="d" x:Name="Self"
Height="{Binding HeightControl,ElementName=Self}" Width="{Binding WidthControl,ElementName=Self}">
<UserControl.Triggers>
<EventTrigger RoutedEvent="Loaded">
<BeginStoryboard>
<Storyboard>
<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[2].(RotateTransform.Angle)"
Storyboard.TargetName="load" RepeatBehavior="Forever">
<EasingDoubleKeyFrame KeyTime="0" Value="0"/>
<EasingDoubleKeyFrame KeyTime="00:00:0.25" Value="90"/>
<EasingDoubleKeyFrame KeyTime="00:00:0.5" Value="180"/>
<EasingDoubleKeyFrame KeyTime="00:00:0.75" Value="270"/>
<EasingDoubleKeyFrame KeyTime="00:00:1" Value="360"/>
</DoubleAnimationUsingKeyFrames>
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</UserControl.Triggers>
<local:SimplePanel>
<Ellipse x:Name="load" StrokeThickness="{Binding StrokeThicknessControl,ElementName=Self}" StrokeDashCap="Round" RenderTransformOrigin="0.5,0.5">
<Ellipse.Stroke>
<LinearGradientBrush StartPoint="0,0" EndPoint="1,1">
<GradientStop Color="{Binding LoadingBrush,ElementName=Self}" Offset="0"/>
<GradientStop Color="{Binding LoadingOpBrush,ElementName=Self}" Offset="0.8"/>
</LinearGradientBrush>
</Ellipse.Stroke>
<Ellipse.RenderTransform>
<TransformGroup>
<ScaleTransform/>
<SkewTransform/>
<RotateTransform />
<TranslateTransform/>
</TransformGroup>
</Ellipse.RenderTransform>
</Ellipse>
<local:SimpleStackPanel HorizontalAlignment="Center" VerticalAlignment="Center" Margin="40,0">
<TextBlock Text="{Binding LoadStr,ElementName=Self}" FontSize="32" Foreground="{DynamicResource RechargeDetailFontBackBrush}" TextWrapping="Wrap" MaxHeight="130" TextTrimming="CharacterEllipsis" TextAlignment="Center"/>
<TextBlock Text="{Binding LoadSeconds,ElementName=Self,StringFormat=0S}" Visibility="{Binding SecondVisible,ElementName=Self}" FontSize="32" Foreground="{DynamicResource RechargeDetailFontBackBrush}" TextWrapping="Wrap" TextAlignment="Center"/>
</local:SimpleStackPanel>
</local:SimplePanel>
</UserControl>
2、使用依赖属性，来增加一些属性，供引用该该空间的页面，设置对应的需求值
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
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.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
namespace K.Controls.Controls
{
/// <summary>
/// LoadingControl.xaml 的交互逻辑
/// </summary>
public partial class LoadingControl : UserControl
{
public LoadingControl()
{
InitializeComponent();
}
public double WidthControl
{
get { return (double)GetValue(WidthControlProperty); }
set { SetValue(WidthControlProperty, value); }
}
public static readonly DependencyProperty WidthControlProperty =
DependencyProperty.Register("WidthControl", typeof(double), typeof(LoadingControl), new PropertyMetadata(300.0));
public double HeightControl
{
get { return (double)GetValue(HeightControlProperty); }
set { SetValue(HeightControlProperty, value); }
}
public static readonly DependencyProperty HeightControlProperty =
DependencyProperty.Register("HeightControl", typeof(double), typeof(LoadingControl), new PropertyMetadata(300.0));
public double StrokeThicknessControl
{
get { return (double)GetValue(StrokeThicknessControlProperty); }
set { SetValue(StrokeThicknessControlProperty, value); }
}
public static readonly DependencyProperty StrokeThicknessControlProperty =
DependencyProperty.Register("StrokeThicknessControl", typeof(double), typeof(LoadingControl), new PropertyMetadata(24.0));
public Color LoadingBrush
{
get { return (Color)GetValue(LoadingBrushProperty); }
set { SetValue(LoadingBrushProperty, value); }
}
public static readonly DependencyProperty LoadingBrushProperty =
DependencyProperty.Register("LoadingBrush", typeof(Color), typeof(LoadingControl), new PropertyMetadata((Color)ColorConverter.ConvertFromString(Application.Current.Resources["RechargeLoadingFontBrush"].ToString())));
public Color LoadingOpBrush
{
get { return (Color)GetValue(LoadingOpBrushProperty); }
set { SetValue(LoadingOpBrushProperty, value); }
}
public static readonly DependencyProperty LoadingOpBrushProperty =
DependencyProperty.Register("LoadingOpBrush", typeof(Color), typeof(LoadingControl), new PropertyMetadata((Color)ColorConverter.ConvertFromString(Application.Current.Resources["RechargeLoadingOpBrush"].ToString())));
public string LoadStr
{
get { return (string)GetValue(LoadStrProperty); }
set { SetValue(LoadStrProperty, value); }
}
public static readonly DependencyProperty LoadStrProperty =
DependencyProperty.Register("LoadStr", typeof(string), typeof(LoadingControl), new PropertyMetadata());
public int LoadSeconds
{
get { return (int)GetValue(LoadSecondsProperty); }
set { SetValue(LoadSecondsProperty, value); }
}
public static readonly DependencyProperty LoadSecondsProperty =
DependencyProperty.Register("LoadSeconds", typeof(int), typeof(LoadingControl), new PropertyMetadata(5));
public Visibility SecondVisible
{
get { return (Visibility)GetValue(SecondVisibleProperty); }
set { SetValue(SecondVisibleProperty, value); }
}
public static readonly DependencyProperty SecondVisibleProperty =
DependencyProperty.Register("SecondVisible", typeof(Visibility), typeof(LoadingControl), new PropertyMetadata(Visibility.Visible));
}
}
3、在其他页面引用上面所创建的控件，实现loading功能
<StackPanel x:Name="loading" Orientation="Horizontal" HorizontalAlignment="Center" VerticalAlignment="Center" Visibility="Hidden" Grid.Row="1" Grid.RowSpan="2" Grid.Column="0" Grid.ColumnSpan="2" Margin="20">
<controls:LoadingControl StrokeThicknessControl="4" WidthControl="38" HeightControl="38"
LoadingBrush="{DynamicResource CashierLoadingBrush}" LoadingOpBrush="{DynamicResource CashierLoadingOpBrush}"
HorizontalAlignment="Center" VerticalAlignment="Center"/>
<TextBlock Text="正在为您加载商品" FontSize="40" Foreground="{DynamicResource QueryItemSelectForBrush}" VerticalAlignment="Center" HorizontalAlignment="Center" Margin="20,0,0,0"/>
</StackPanel>
4、资源文件里获取对应的颜色
<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:cal="clr-namespace:K.Controls.Controls"
xmlns:o="http://schemas.microsoft.com/winfx/2006/xaml/presentation/options"
<SolidColorBrush o:Freeze="True" x:Key="QueryItemSelectForBrush" Color="#FFFFFF"/>
<Color x:Key="RechargeLoadingFontBrush">#ED7C32</Color>
<Color x:Key="RechargeLoadingOpBrush">#00ED7C32</Color>
<Color x:Key="CashierLoadingBrush">#FFFFFF</Color>
<Color x:Key="CashierLoadingOpBrush">#00FFFFFF</Color>
<!--资源文件中添加图片-->
<BitmapImage x:Key="LoadingWaitEIcon" UriSource="/K.Controls;component/Images/Black/ic_loading2.png"></BitmapImage>
</ResourceDictionary >