overload

overload

关注
发信
关注(28)粉丝(399)

正确时WPF故事板非交互式错误.Begin(this，true)使用

本文介绍了正确时WPF故事板非交互式错误.Begin(this，true)使用的处理方法，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

我是WPF的新手.我来自C#和ASP.NET背景.

I am new to WPF. I come from a C# and ASP.NET background.

我正在尝试创建一个非常基本的WPF应用程序，其中包含2个故事板，这些故事板是通过交互式Begin重载.Begin(this，true)以编程方式启动的.

I am attempting to create a very basic WPF application with 2 storyboards that are started programmatically through the interactive Begin overload .Begin(this,true).

引发OnCompleted事件时，将检查另一个情节提要的状态.如果状态为情节提要板未运行，则应开始情节提要.

When the OnCompleted event is raised the status of the other storyboard is checked. If the status is that the storyboard is not running it should begin the storyboard.

我在完成的处理程序"中收到以下错误:

I receive the following error inthe Completed handler:

抛出:无法执行操作，因为没有将指定的Storyboard应用于此对象进行交互式控制.

Throws: Cannot perform action because the specified Storyboard was not applied to this object for interactive control.

我相信我使用了正确的.Begin(this，true)重载进行交互式控制.

I believe I used the correct .Begin(this,true) overload for interactive control.

我在下面包括了MainWindow.cs和MainWindow.xaml代码.我故意不通过Xaml中的T​​rigger启动动画.我需要动态启动动画并检查其他多个动画的状态.示例被简化为主要问题.

I've included the MainWindow.cs and MainWindow.xaml code below. I am purposely not starting the animations through a Trigger in Xaml. I need to start the animations dynamically and check states of other multiple animations. Example stripped down to focus on main issue.

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.Animation;

namespace StoryboardExample
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
    public Storyboard Storyboard1 { get; set; }
    public Storyboard Storyboard2 { get; set; }

    public MainWindow()
    {
        InitializeComponent();

        Storyboard1 = (System.Windows.Media.Animation.Storyboard)FindResource("Storyboard1");
        Storyboard1.Name = "MegatronStoryboard";
        Storyboard1.Completed +=new EventHandler(Storyboard1_Completed);

        Storyboard2 = (System.Windows.Media.Animation.Storyboard)FindResource("Storyboard2");
        Storyboard2.Name = "TransformerStoryboard";
        Storyboard2.Completed += new EventHandler(Storyboard2_Completed);

        Storyboard2.Begin(this, true);
    }

    void Storyboard1_Completed(object sender, EventArgs e)
    {
        if (Storyboard2.GetCurrentState() == ClockState.Stopped)
        {
            Storyboard2.Begin(this, true);
            //Throws: Cannot perform action because the specified Storyboard was not applied to this object for interactive control.

            //I thought I was calling the Begin overload with the correct params for interactive control
            //I thought I was calling the Begin overload with the correct params for interactive control .Begin(this,true)
        }
    }

    void Storyboard2_Completed(object sender, EventArgs e)
    {
        if (Storyboard1.GetCurrentState() == ClockState.Stopped)
        {
            Storyboard1.Begin(this, true);
            //Throws: Cannot perform action because the specified Storyboard was not applied to this object for interactive control.

            //I thought I was calling the Begin overload with the correct params for interactive control .Begin(this,true)
        }
    }


}
}

<Window x:Name="MainWindow1" x:Class="StoryboardExample.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="MainWindow" Height="350" Width="525">
<Window.Resources>
    <Storyboard x:Key="Storyboard1">
        <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Opacity)" Storyboard.TargetName="cnvsStoryboard1">
            <EasingDoubleKeyFrame KeyTime="0" Value="0"/>
            <EasingDoubleKeyFrame KeyTime="0:0:0.5" Value="0"/>
            <EasingDoubleKeyFrame KeyTime="0:0:1" Value="1"/>
            <EasingDoubleKeyFrame KeyTime="0:0:2" Value="1"/>
            <EasingDoubleKeyFrame KeyTime="0:0:3" Value="0"/>
        </DoubleAnimationUsingKeyFrames>
        <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[0].(ScaleTransform.ScaleX)" Storyboard.TargetName="cnvsStoryboard1">
            <EasingDoubleKeyFrame KeyTime="0" Value="0.2"/>
            <EasingDoubleKeyFrame KeyTime="0:0:0.5" Value="0.2"/>
            <EasingDoubleKeyFrame KeyTime="0:0:1" Value="1"/>
            <EasingDoubleKeyFrame KeyTime="0:0:2" Value="1"/>
            <EasingDoubleKeyFrame KeyTime="0:0:3" Value="0.2"/>
        </DoubleAnimationUsingKeyFrames>
        <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[0].(ScaleTransform.ScaleY)" Storyboard.TargetName="cnvsStoryboard1">
            <EasingDoubleKeyFrame KeyTime="0" Value="0.2"/>
            <EasingDoubleKeyFrame KeyTime="0:0:0.5" Value="0.2"/>
            <EasingDoubleKeyFrame KeyTime="0:0:1" Value="1"/>
            <EasingDoubleKeyFrame KeyTime="0:0:2" Value="1"/>
            <EasingDoubleKeyFrame KeyTime="0:0:3" Value="0.2"/>
        </DoubleAnimationUsingKeyFrames>
        <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[3].(TranslateTransform.X)" Storyboard.TargetName="cnvsStoryboard1">
            <EasingDoubleKeyFrame KeyTime="0:0:0.5" Value="0"/>
            <EasingDoubleKeyFrame KeyTime="0:0:1" Value="26"/>
            <EasingDoubleKeyFrame KeyTime="0:0:2" Value="26"/>
            <EasingDoubleKeyFrame KeyTime="0:0:3" Value="18"/>
        </DoubleAnimationUsingKeyFrames>
        <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[3].(TranslateTransform.Y)" Storyboard.TargetName="cnvsStoryboard1">
            <EasingDoubleKeyFrame KeyTime="0:0:0.5" Value="0"/>
            <EasingDoubleKeyFrame KeyTime="0:0:1" Value="353"/>
            <EasingDoubleKeyFrame KeyTime="0:0:2" Value="353"/>
            <EasingDoubleKeyFrame KeyTime="0:0:3" Value="5"/>
        </DoubleAnimationUsingKeyFrames>
    </Storyboard>
    <Storyboard x:Key="Storyboard2">
        <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Opacity)" Storyboard.TargetName="cnvsStoryboard2">
            <EasingDoubleKeyFrame KeyTime="0" Value="0"/>
            <EasingDoubleKeyFrame KeyTime="0:0:0.5" Value="0"/>
            <EasingDoubleKeyFrame KeyTime="0:0:1" Value="1"/>
            <EasingDoubleKeyFrame KeyTime="0:0:3" Value="1"/>
            <EasingDoubleKeyFrame KeyTime="0:0:4" Value="0"/>
        </DoubleAnimationUsingKeyFrames>
        <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[0].(ScaleTransform.ScaleX)" Storyboard.TargetName="cnvsStoryboard2">
            <EasingDoubleKeyFrame KeyTime="0" Value="0.2"/>
            <EasingDoubleKeyFrame KeyTime="0:0:0.5" Value="0.2"/>
            <EasingDoubleKeyFrame KeyTime="0:0:1" Value="1"/>
            <EasingDoubleKeyFrame KeyTime="0:0:3" Value="1"/>
            <EasingDoubleKeyFrame KeyTime="0:0:4" Value="0.2"/>
        </DoubleAnimationUsingKeyFrames>
        <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[0].(ScaleTransform.ScaleY)" Storyboard.TargetName="cnvsStoryboard2">
            <EasingDoubleKeyFrame KeyTime="0" Value="0.2"/>
            <EasingDoubleKeyFrame KeyTime="0:0:0.5" Value="0.2"/>
            <EasingDoubleKeyFrame KeyTime="0:0:1" Value="1"/>
            <EasingDoubleKeyFrame KeyTime="0:0:3" Value="1"/>
            <EasingDoubleKeyFrame KeyTime="0:0:4" Value="0.2"/>
        </DoubleAnimationUsingKeyFrames>
        <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[3].(TranslateTransform.Y)" Storyboard.TargetName="cnvsStoryboard2">
            <EasingDoubleKeyFrame KeyTime="0:0:0.5" Value="0"/>
            <EasingDoubleKeyFrame KeyTime="0:0:1" Value="-230"/>
            <EasingDoubleKeyFrame KeyTime="0:0:3" Value="-230"/>
            <EasingDoubleKeyFrame KeyTime="0:0:4" Value="137"/>
        </DoubleAnimationUsingKeyFrames>
        <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[3].(TranslateTransform.X)" Storyboard.TargetName="cnvsStoryboard2">
            <EasingDoubleKeyFrame KeyTime="0:0:0.5" Value="0"/>
            <EasingDoubleKeyFrame KeyTime="0:0:1" Value="-10"/>
            <EasingDoubleKeyFrame KeyTime="0:0:3" Value="-10"/>
            <EasingDoubleKeyFrame KeyTime="0:0:4" Value="-13"/>
        </DoubleAnimationUsingKeyFrames>
    </Storyboard>
</Window.Resources>

<Canvas x:Name="LayoutRoot">
    <Canvas x:Name="cnvsStoryboard1"
            Height="203" Canvas.Left="223"
            Canvas.Top="-284" Width="253"
            Opacity="0"
            RenderTransformOrigin="0.5,0.5">
        <Canvas.RenderTransform>
            <TransformGroup>
                <ScaleTransform ScaleX="0.2" ScaleY="0.2"/>
                <SkewTransform/>
                <RotateTransform/>
                <TranslateTransform/>
            </TransformGroup>
        </Canvas.RenderTransform>
        <Image x:Name="imgTransformer" Height="148"
               Canvas.Left="42" Source="Images/transformer.png"
               Stretch="Fill" Canvas.Top="8" Width="176"
               RenderTransformOrigin="0.5,0.5">
            <Image.RenderTransform>
                <TransformGroup>
                    <ScaleTransform/>
                    <SkewTransform/>
                    <RotateTransform/>
                    <TranslateTransform X="1" Y="1"/>
                </TransformGroup>
            </Image.RenderTransform>
        </Image>
        <Label x:Name="lblTank" Content="Tank" Canvas.Left="101" Canvas.Top="160" FontSize="21.333">
            <Label.Foreground>
                <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
                    <GradientStop Color="Black"/>
                    <GradientStop Color="#FFCA2828" Offset="1"/>
                    <GradientStop Color="#FE412424" Offset="0.003"/>
                </LinearGradientBrush>
            </Label.Foreground>
        </Label>
    </Canvas>
    <Canvas x:Name="cnvsStoryboard2" Height="318"
            Canvas.Left="41" Canvas.Top="229"
            Width="215" Opacity="0"
            RenderTransformOrigin="0.5,0.5">
        <Canvas.RenderTransform>
            <TransformGroup>
                <ScaleTransform ScaleX="0.2" ScaleY="0.2"/>
                <SkewTransform/>
                <RotateTransform/>
                <TranslateTransform/>
            </TransformGroup>
        </Canvas.RenderTransform>
        <Image x:Name="imgMegatron" Height="264" Canvas.Left="33"
               Source="Images/Megatron.png"
               Stretch="Fill" Canvas.Top="8"
               Width="153"/>
        <Label x:Name="lblMegatron"
               Content="Megatron"
               Canvas.Left="56"
               Canvas.Top="278"
               FontSize="21.333"
               Width="107.707"
               RenderTransformOrigin="0.696,0.599" Height="40">
            <Label.Foreground>
                <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
                    <GradientStop Color="Black"/>
                    <GradientStop Color="#FFCA2828" Offset="1"/>
                    <GradientStop Color="#FE412424" Offset="0.003"/>
                </LinearGradientBrush>
            </Label.Foreground>
        </Label>
    </Canvas>
</Canvas>
</Window>

我一直在研究这个问题，我认为我在情节提要中的第一个参数.Begin(this，true)重载可能不正确吗?

I've been looking into this and I think that my first parameter in the storyboard.Begin(this,true) overload may be incorrect?

非常感谢您的帮助.

-亚伦

推荐答案

如果使用.GetCurrentState(this)，是否可行?或者，也可以调用.Stop(this);.紧接在调用.Start(this，true)之前?

Does it work if you use .GetCurrentState(this)? Alternately, perhaps call .Stop(this); immediately prior to calling .Start(this, true)?

这篇关于正确时WPF故事板非交互式错误.Begin(this，true)使用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！

08-29 05:10
Powered by LMLPHP ©2025 overload 0.039306