Hello,

when trying to export a diagram in our application, we encouter the following error:

System.ArgumentException: Ungültiger Parameter.
bei System.Drawing.Drawing2D.GraphicsPath.get_PathTypes()
bei MindFusion.Svg.UnitFormatter.IsPathClosed(GraphicsPath g)
bei MindFusion.Svg.SvgGraphics.DrawPath(Pen pen, GraphicsPath path)
bei MindFusion.Diagramming.ShapeNode.xc79d59e9288101bd(IGraphics x41347a961b838962, RectangleF xa6236fc5cd405c4e, Boolean x2f9dabff87b2168b, Brush xb45de92d01a0ec1f, Pen x9c79b5ad7b769b12, RenderOptions xdfde339da46db651)
bei MindFusion.Diagramming.ShapeNode.Draw(IGraphics graphics, RenderOptions options)
bei MindFusion.Diagramming.Diagram.x83e1efc9aa69ada9(IGraphics x41347a961b838962, DiagramItem xccb63ca5f63dc470, Boolean x9c41bb4d9b3b314f)
bei MindFusion.Diagramming.Diagram.x679ae26de3befa07(IGraphics x41347a961b838962, RectangleF xd0772cd9ac472b96, Boolean x979174172ae18db3)
bei MindFusion.Diagramming.Diagram.Draw(IGraphics graphics, RenderOptions options, RectangleF clipRect, Boolean noModifiedItems)
bei MindFusion.Diagramming.Export.SvgExporter.Export(Diagram diagram, String filePath)
bei HSPforzheim.ProcessDesigner.GUI.DrawForm.diagramToSVGToolStripMenuItem_Click(Obj
ect sender, EventArgs e)

which is caused by an Invalid Parameter (sry for german translation).

Code itself:

            SaveFileDialog saveFileDialog = new SaveFileDialog();
            saveFileDialog.DefaultExt = "svg";



saveFileDialog.Filter = "SVG files|*.svg";



if (saveFileDialog.ShowDialog() == DialogResult.OK)



{




MindFusion.Diagramming.Export.SvgExporter svgExp =





new MindFusion.Diagramming.Export.SvgExporter();




svgExp.ExternalImages = false;




svgExp.Export(diagramView.Diagram, saveFileDialog.FileName);



} 

I don't know what causes this problem. SVG Export in your sample application works fine.

Best regards,

Alex

Hello Stoyan,

it seems to me, that the values for Shape and Bounds are correct for all items. The SVG export fails if the following node with the following shape is present in the diagram:

    internal class ShapeProcessOperator : myShapes
    {
        public static ElementTemplate[] elements =
            new ElementTemplate[]
                {
                    new LineTemplate(0, 0, 100, 0), new LineTemplate(100, 0, 100, 100), new LineTemplate(100, 100, 0, 100),
                    new LineTemplate(0, 100, 0, 0)
                };

        public static ElementTemplate[] textArea =
            new ElementTemplate[]
                {
                    new LineTemplate(5, 55, 5, 95), new LineTemplate(5, 95, 95, 95), new LineTemplate(95, 95, 95, 55),
                    new LineTemplate(95, 55, 5, 55)
                };

        public ShapeProcessOperator() : base(elements, textArea, "Operation")
        {
            bgColor = Color.LightGreen;
            width = 40;
            height = 10;
            anchorPattern =
                new AnchorPattern(
                    new AnchorPoint[]
                        {
                            new AnchorPoint(50, 0, true, false, MarkStyle.Circle, Color.Blue),
                            new AnchorPoint(50, 100, false, true, MarkStyle.Circle, Color.Green),
                            new AnchorPoint(100, 50, true, true, MarkStyle.Cross, Color.Red)
                        });
        }
    } 

This node adjusts its anchorPattern while the user adds and removes links.

the following output is visible in the debugger:

draw string 'O0'
draw path
draw path

where O0 is the node with the ShapeProcessOperator - Shape.

Usually the following happens, if I use other shapes:

draw path
draw string 'B0'
draw path
draw string 'P0'
draw path
draw string 'E0'
draw path
draw string 'S0'
draw path
draw string 'E1'
draw path
draw string 'P1'
...and so on ...

Maybe a better hint for you. All these shapes also have no textarea defined. The text itself is a node. The shapes are defined like this:

    internal class ShapeEnergy : myShapes
    {
        public static ElementTemplate[] elements =
            new ElementTemplate[]
                {
                    new LineTemplate(0, 50, 50, 0), new LineTemplate(50, 0, 100, 50), new LineTemplate(100, 50, 50, 100),
                    new LineTemplate(50, 100, 0, 50)
                };

        public ShapeEnergy()
            : base(elements, "Energie")
        {
            bgColor = Color.LightBlue;
            width = 10;
            height = 10;
        }
    } 

Best regards,

Alex

I added my shape definitions to that project. The error still persists.

Maybe you notice something. Here is the Link to the updated project:
http://pme.hs-pforzheim.de/_temp/Temp.rar

Thanks for your help!

I changed it, and it WORKS! Great job!

But one little question left: I use a grid in my diagram. Unfortunatly this grid is exported also. Is there a way to not export this information?

Best regards,

Alex

and thank you (again) for great support!