CODEWITHSUNDEEP
c#uwp
Samuele Dassatti
Samuele Dassatti

Reputation: 269

Save and load stroke from an InkCanvas to a variable

I need to save all the strokes of an InkCanvas in a variable (not a file) and later load them in the InkCanvaswhen the user needs it. The problem is that I get an unknown error every time I try to load the strokes.

This is the code I'm using to load them:

            foreach (InkStroke stroke in StrokesList)
        {
            var strokeBuilder = new InkStrokeBuilder();
            strokeBuilder.SetDefaultDrawingAttributes(stroke.DrawingAttributes);
            System.Numerics.Matrix3x2 matr = stroke.PointTransform;
            IReadOnlyList<InkPoint> inkPoints = stroke.GetInkPoints();
            InkStroke stk = strokeBuilder.CreateStrokeFromInkPoints(inkPoints, matr);
            InkCanvas.InkPresenter.StrokeContainer.AddStroke(stk);
        }

I also tried InkCanvas.InkPresenter.StrokeContainer.AddStrokes(StrokesList); but it doesn't work either

EDIT: I'm saving the strokes like this: IReadOnlyList<InkStroke> StrokesList = inkCanvas.InkPresenter.StrokeContainer.GetStrokes();

Upvotes: 0

Views: 182

Answers (1)

Pedro Lamas
Pedro Lamas

Reputation: 7233

If all you require is storing and then restoring the strokes, I recommend using StrokeContainer.SaveAsync to a InMemoryRandomAccessStream and then just loading that with StrokeContainer.LoadAsync.

Upvotes: 1

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