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how can i make this kind of animation in .cs code file?

<Storyboard x:Name="Storyboard1" Completed="Storyboard1_Completed">

        <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Projection).(PlaneProjection.RotationY)" Storyboard.TargetName="imageBack1">

            <EasingDoubleKeyFrame KeyTime="0:0:0.25" Value="90"/>

            <EasingDoubleKeyFrame KeyTime="0:0:0.5" Value="0"/>

        </DoubleAnimationUsingKeyFrames>

        <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Visibility)" Storyboard.TargetName="imageBack1">

            <DiscreteObjectKeyFrame KeyTime="0:0:0.25">

                <DiscreteObjectKeyFrame.Value>

                    <Visibility>Visible</Visibility>

                </DiscreteObjectKeyFrame.Value>

            </DiscreteObjectKeyFrame>

        </ObjectAnimationUsingKeyFrames>

        <DoubleAnimation Duration="0:0:0.25" To="90" Storyboard.TargetProperty="(UIElement.Projection).(PlaneProjection.RotationY)" Storyboard.TargetName="image1" d:IsOptimized="True"/>

    </Storyboard>

       

private Timeline CreateFlipAnimation(TimeSpan beginTime, UIElement target, UIElement target2)

    {

        DoubleAnimationUsingKeyFrames animation = new DoubleAnimationUsingKeyFrames(){

            BeginTime = beginTime

        };

 

        //target.Projection = new PlaneProjection();

        Storyboard.SetTargetProperty(animation, new PropertyPath(UIElement.ProjectionProperty));

        Storyboard.SetTarget(animation, target);

        animation.KeyFrames.Add(new EasingDoubleKeyFrame() { KeyTime = kt1, Value = 90 });

        animation.KeyFrames.Add(new EasingDoubleKeyFrame() { KeyTime = kt2, Value = 0 });

 

        ObjectAnimationUsingKeyFrames animation1 = new ObjectAnimationUsingKeyFrames()

        {

            BeginTime = beginTime

        };

        Storyboard.SetTargetProperty(animation1, new PropertyPath(UIElement.VisibilityProperty));

        Storyboard.SetTarget(animation1, target);

        animation1.KeyFrames.Add(new DiscreteObjectKeyFrame() { KeyTime = kt1, Value = Visibility.Visible });

 

        DoubleAnimation animation2 = new DoubleAnimation()

        {

            //Duration = ,

            To = 90

        };

        //target2.Projection = new PlaneProjection();

        Storyboard.SetTargetProperty(animation2, new PropertyPath(UIElement.ProjectionProperty));

        Storyboard.SetTarget(animation2, target2);

 

 

    }

       

<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Projection).(PlaneProjection.RotationY)" Storyboard.TargetName="imageBack1">

       

target2.Projection = new PlaneProjection();

Storyboard.SetTargetProperty(animation2, new PropertyPath(PlaneProjection.RotationZProperty));

Storyboard.SetTarget(animation2, target2.Projection);