Hi Stoyan,

When I copy a selection that includes links, an exception is raised:

Exception message:
Object reference not set to an instance of an object.

Stack:
   at MindFusion.Diagramming.ConnectionPoint.GetAnchorPos(Int32 anchorIdx, PointF& point)
   at MindFusion.Diagramming.DiagramLink.set_OriginAnchor(Int32 value)
   at MindFusion.Diagramming.DiagramLink.set_OriginIndex(Int32 value)
   at MindFusion.Diagramming.DiagramLink..ctor(DiagramLink prototype, DiagramNode src, DiagramNode dest)
   at MindFusion.Diagramming.DiagramLink.Clone(Boolean clipboard)
   at MindFusion.Diagramming.Diagram.CopySelection(Diagram source, Boolean unconnectedLinks, Boolean copyGroups)
   at MindFusion.Diagramming.WinForms.DiagramView.xd387e793db5b6581(Boolean x14d6ee1d6b77a32d, Boolean xf7b2c9839607605d)
   at MindFusion.Diagramming.WinForms.DiagramView.CopyToClipboard(Boolean persist, Boolean groups)
   at Entities.MainForm.button3_Click(Object sender, EventArgs e) in M:\Varies\TestsC#\CopyWithLinks\MainForm.cs:line 306
A first chance exception of type 'System.NullReferenceException' occurred in MindFusion.Diagramming.dll 

To reproduce this error:
I used the Entities sample (my favorite ). I added 2 buttons (Copy and Paste). They do:

// Copy
private void button3_Click(object sender, EventArgs e)
{
    this._pasteDelta = 10;
    try
    {
        this.diagramView.CopyToClipboard(false, true);
    }
    catch (Exception exc)
    {
        System.Console.WriteLine("Exception message:\n" + exc.Message + "\n\nStack:\n" + exc.StackTrace);
    }
}

// Paste
private void button4_Click(object sender, EventArgs e)
{
    this.diagramView.PasteFromClipboard(this._pasteDelta, this._pasteDelta, false);
    this._pasteDelta += 25;
} 

Then, create 2 entities, link them and CTRL-Click to select all 3 components. Click Copy and BOOM!

How can I avoid this?

Thanks,
Marie

Hi again,

I have a 3^rd question.

Is there a way to know which node what copied? I am catching diagram.NodePasted and I have access to the new node, but not the old one (I need to have the .tag associated to it but it seems to be lost).

Thanks,
Marie

Hi Stoyan,

1) Wow! 8) Is it going to be in the next released version?
2) I can't get it to work... I do

this.diagramView.CopyToClipboard(false,true); 

The problem is still there (missing ShapeNodes). Also, if I copy a container with 2 tablenodes in it that are linked to each other, the link doesn't get copied. Could you retry it using the Entities sample (the standalone one)... I just added the code above (from the 1^st post) and added another button to create containers:

// Create container
private void button2_Click(object sender, EventArgs e)
{
    ContainerNode container = this.diagram.Factory.CreateContainerNode(0, 0, 50, 50);
    container.Caption = "Caption";
    container.EnabledHandles = AdjustmentHandles.ResizeBottomRight |
                       AdjustmentHandles.Move;
    container.HandlesStyle = HandlesStyle.DashFrame;
} 

I can send you the project if you think it could be helpful.

3) CopySelection & PasteSelection will be perfect for me


Thanks again for your answers. You're a big help.
Marie


Edit: Forgot to mention... Also replaced the dlls to use the ones from the private message

Hi Stoyan,

2) I'll do that.
However, if it would be possible to include all group levels, it would be helpful to me, because if I have containers containing containers with containers in it with nodes in it, only the first two are copied...

Do you know why the links are not pasted (in the case I copied a container containing 2 nodes linked together)? Is it for the same reason? Any idea of a workaround (I need to know if they should be linked)?

Thanks!
Marie

I'll do that too!

Thanks a lot!
Marie