hi,

I'm evaluating the FlowChart.Net and i have a problem redisplay the link from the stored list.

i have a testNode and testLink basically follow the basic tutorial.

here is my code:

    public class myLink: DiagramLink
    {
  public MyLink(Diagram diagram)
: base(diagram)
  {
  }

  public MyLink(Diagram diagram, MyNode src, MyNode dest)
: base(diagram, src, dest)
  {
  }

  public MyLink(MyLink prototype, MyNode src, MyNode dest)
: base(prototype, src, dest)
  {
  }

  public MyLink(MyLink prototype, Diagram diagram)
: base(diagram)
  {
  }

  protected override void LoadFrom(System.IO.BinaryReader reader, PersistContext context)
  {
base.LoadFrom(reader, context);
  }

  protected override void SaveTo(System.IO.BinaryWriter writer, PersistContext context)
  {
base.SaveTo(writer, context);
  }
    }

TestLink
    public class MyNode:DiagramNode
    {
  public MyNode(Diagram diagram)
: base(diagram)
  {
  }

  public MyNode(MyNode prototype)
: base(prototype)
  {
  }

  protected override void LoadFrom(System.IO.BinaryReader reader, PersistContext context)
  {
base.LoadFrom(reader, context);
  }

  protected override void SaveTo(System.IO.BinaryWriter writer, PersistContext context)
  {
base.SaveTo(writer, context);
  }

  public override void Draw(MindFusion.Drawing.IGraphics graphics, RenderOptions options)
  {
graphics.DrawRectangle(Pens.Black, Rectangle.Truncate(this.bounds));
  }

  public override void DrawShadow(MindFusion.Drawing.IGraphics graphics)
  {

  }

and i'm trying see if i can recreate the diagram from a stored List

private List<myNode> testNodes = new List<myNode> ();
       private List<myLink> testLinks = new List<myLink>();

       private void testToolStripMenuItem1_Click(object sender, EventArgs e)
       {
           TestDiagramNode node0 = new TestDiagramNode(currentDiagram());
           TestDiagramNode node1 = new TestDiagramNode(currentDiagram());

           node0.Bounds = new RectangleF(18F, 26F, 7.2736F, 7.878159F);
           node1.Bounds = new RectangleF(62F, 26F, 6.280975F, 7.878159F);


           currentDiagram().Nodes.Add(node0);
           currentDiagram().Nodes.Add(node1);

           TestDiagramLink link = new TestDiagramLink(currentDiagram(), node0, node1);
           TestDiagramLink link2 = new TestDiagramLink(currentDiagram(), node1, node0);

           currentDiagram().Links.Add(link);
           currentDiagram().Links.Add(link2);

           testLinks.Add(link);
           testLinks.Add(link2);
           testNodes.Add(node0);
           testNodes.Add(node1);
       }

then i try to retrieve and recreate:

  private void retrieveToolStripMenuItem_Click(object sender, EventArgs e)
       {
           foreach (TestDiagramNode node in testNodes)
           {
               currentDiagram().Nodes.Add(node);
           }

           TestDiagramLink link = new TestDiagramLink(currentDiagram(),testNodes[0],testNodes[1]);

           currentDiagram().Links.Add(link);

           TestDiagramLink link1 = new TestDiagramLink(currentDiagram(), testNodes[1], testNodes[0]);

           currentDiagram().Links.Add(link1);
}

the above work fine, the arrow origin and destination were perfect, but not this:


           TestDiagramLink link2 = new TestDiagramLink(currentDiagram());
           link2.Origin = testNodes[0];
           link2.Destination = testNodes[1];
           currentDiagram().Links.Add(link2);

The link's origin alway located at 0.0 (upper left corner of the diagram view) then the arrow end at the destination node, do you know why?

yes, and my currentDiagram() return the selected diagram.

Hi,

Calling the link's UpdateIntersections method seems to fix that:

MyLink link2 = new MyLink(diagram);
link2.Origin = testNodes[1];
link2.Destination = testNodes[0];
diagram.Links.Add(link2);
link2.UpdateIntersections();
diagram.Invalidate(link2.GetRepaintRect(false));

I hope that helps,
Stoyan