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POUsing ObjectAnimationUsingKeyFrames to control an image slideshow
 

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  1. POUsing ObjectAnimationUsingKeyFrames to control an image slideshow
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    <p>I'm trying to use an animation to control a slideshow of images.</p> <p>The user enters a folder path into txtaddress, clicks on btnGo and the program displays each image found in that folder for two seconds.</p> <p>However, I'm stuggling to control this using animations. When it begins the slideshow I get an error of "Cannot resolve all property references in the property path "imgMain.Source"</p> <p>My complete code is below. Any ideas?</p> <pre><code>Imports System.IO Imports System.Windows.Media.Animation Class MainWindow Private Property ImageSource As String Private Sub btnGo_Click(sender As System.Object, e As System.Windows.RoutedEventArgs) Handles btnGo.Click 'Get file list Dim fileList(0) As String Dim btm(0) As BitmapImage Dim dir1 As New DirectoryInfo(txtAddress.Text) Dim anim As New ObjectAnimationUsingKeyFrames For Each fi In dir1.GetFiles("*.bmp") fileList(UBound(fileList)) = fi.Name ReDim Preserve fileList(UBound(fileList) + 1) Next For Each fi In dir1.GetFiles("*.png") fileList(UBound(fileList)) = fi.Name ReDim Preserve fileList(UBound(fileList) + 1) Next For Each fi In dir1.GetFiles("*.jpg") fileList(UBound(fileList)) = fi.Name ReDim Preserve fileList(UBound(fileList) + 1) Next 'Create animation anim.Duration = TimeSpan.FromSeconds(UBound(fileList) * 2) Dim idx As Integer For idx = 0 To UBound(fileList) - 1 btm(idx) = New BitmapImage(New Uri(txtAddress.Text &amp; "\" &amp; fileList(idx), UriKind.Absolute)) anim.KeyFrames.Add(New DiscreteObjectKeyFrame(btm(idx), KeyTime.FromTimeSpan(TimeSpan.FromSeconds(idx * 2)))) ReDim Preserve btm(UBound(btm) + 1) Next Dim sBoard As New Storyboard sBoard.Children.Add(anim) Storyboard.SetTargetName(anim, imgMain.Name) Storyboard.SetTargetProperty(anim, New PropertyPath("imgMain.Source")) sBoard.Begin(Me) End Sub End Class </code></pre>
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    1. PTQuestion
    1. USPatrick
    1. USjames pearce
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      1. VTUpMod
    1. COBump - I believe the issue is using a bitmapImage as the object in ObjectAnimationUsingKeyFrames.
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      1. POUsing ObjectAnimationUsingKeyFrames to control an image slideshow
      1. USjames pearce
 

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