c# wpf XamlParseException

Zaug 306

i work a project with visual studio 2022 and i use gifs.
i save the canvas and use method XamlWriter
but when i load canvas, i give an error

"System.Windows.Markup.XamlParseException: "Unable to set unknown member '{http://wpfanimatedgif.codeplex.com}ImageBehavior.AnimatedSource'." Line number '1' and line position '737'.'"

My Code is:

//save
loadedEventrunned = false; 
FileStream fs = File.Open(projectpath, FileMode.Create);
XamlWriter.Save(canvasmain, fs);
fs.Close();


//load
loadedEventrunned = true;
FileStream fs = File.Open(projectpath, FileMode.Open, FileAccess.Read);
savedCanvas = XamlReader.Load(fs) as Canvas; //error at here
fs.Close();
sp.Children.Add(savedCanvas);
savedCanvas.PreviewMouseUp += canvasmain_PreviewMouseUp;
savedCanvas.PreviewMouseMove += canvasmain_PreviewMouseMove;

How do i fix it??

Hui Liu-MSFT 47,341 Reputation points Microsoft Vendor

2022-01-28T02:54:12.987+00:00

Hi,@Zaug .What control are you using to display the .gif? What is the source of your .gif? Could you show your Xaml code?

Zaug 306

i created gif at code. create Code is :

Image actionmodel;

actionmodel = new Image();
            BitmapImage src = new BitmapImage();
            src.BeginInit();
            src.UriSource = new Uri(aksiyon1, UriKind.Absolute);
            src.EndInit();
            actionmodel.Source = src;
            actionmodel.Stretch = Stretch.Uniform;
            actionmodel.Height = 50;
            actionmodel.Stretch = Stretch.Uniform;
            actionmodel.Height = 100;
            Canvas.SetTop(actionmodel, 350);
            Canvas.SetLeft(actionmodel, 750);
            actionmodel.PreviewMouseLeftButtonDown += actionmodel_PreviewMouseDown;
            canvasmain.Children.Add(actionmodel);
            ImageBehavior.SetAnimatedSource(actionmodel, src);
            rotateTransform1 = new RotateTransform(0, 0, 0);
            actionmodel.PreviewMouseWheel += actionmodel_PreviewMouseWheel;
            actionmodel.RenderTransformOrigin = new Point(0.5, 0.5);
            actionmodel.RenderTransform = rotateTransform1;
            TransformGroup group = new TransformGroup();
            ScaleTransform xform = new ScaleTransform();
            group.Children.Add(xform);
            TranslateTransform tt = new TranslateTransform();
            group.Children.Add(tt);
            actionmodel.RenderTransform = group;

1 answer

Zaug 306 Reputation points

2022-01-28T12:28:41.557+00:00

I Fixed the problem, thx for look my problem
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Hui Liu-MSFT 47,341 Reputation points Microsoft Vendor

2022-01-31T03:22:22.787+00:00

Hi,@Zaug .Could you share your solution and accept it as answer? It is helpful for community members with similar problems.
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c# wpf XamlParseException

1 answer