Hi,

I am doing a workflow application (something similar windows workflow) using Nevron diagram. This workflow, I am planning to add few custom controls that can be dragged and dropped into designer surface.

I have created a sample application (attached with this mail), that contains "IfElseActivity" and "RootActivity" custom controls. I am adding "RootActivity" control at the load event of the form and "IfElseActivity" user can drag and drop on to the surface.

Either case I am facing a problem with the NLineShape object. The NLineShape does not display on designer surface. Please advice me.

Thanks

Anslum

Hi,

Let me explain you in more details: you will need a dummy drawing document to place the dragged shape in, in order to get the connectors working. You can easily do this by in the AdaptTableFormat of the data object adaptor:

protected virtual NDrawingDataObject AdaptTableFormat(string tableName)

{

      NDrawingDocument dummy = new NDrawingDocument();

      NShape shape = null;

      if (tableName == "1")

      {

            shape = new IfElseActivity(dummy);

      }

      else

      {

            shape = new NRectangleShape(0, 0, 50, 50);

      }

      NDrawingDataObject ddo = new NDrawingDataObject(dummy, new INDiagramElement[] { shape });

      return ddo;

}

Do not forget to add the shape to the document as soon as it is created (for example in the constructor):

public IfElseActivity()

{

}

public IfElseActivity(NDrawingDocument document)

{

      document.ActiveLayer.AddChild(this);

      CreateBranches();

}

Best Regards,
Nevron Support Team