Hi,

I am trying to create a new shape and add the shape into a document. However I am getting an error "An item with the same key has already been added." when I try to add the same shape to a document. This happens even if I  assign a new unique ID to the shape. I am creating the shape from an Nmodel object obtained from the stencil library.

The error is on this line of code ((NLayer)document.Layers.Children(null)[layerID]).AddChild((NShape)newShape);

What am I doing wrong here? Thanks.

Here's my code

private void CreateShapesFromVisioDocPage(Aspose.Diagram.Page page)

{

listShapes.Items.Clear();

listConnects.Items.Clear();

if (page.PageSheet.Layers.Count > 0)

{

NLayer nlayer = new NLayer();

foreach (Aspose.Diagram.Layer layer in page.PageSheet.Layers)

{

nlayer = new NLayer();

nlayer.Name = layer.Name.Value;

nlayer.Id = layer.IX;

document.Layers.AddChild(nlayer);

listLayers.Items.Add(layer.IX.ToString() + "-" + layer.Name.Value);

}

document.ActiveLayerUniqueId = ((NLayer)document.Layers.Children(null)[document.Layers.ChildrenCount(null) - 1]).UniqueId;

}

if (page.Shapes.Count > 0)

{

Random rndm = new Random(DateTime.Now.Millisecond);

int layers = 0;

foreach (Aspose.Diagram.Shape shape in page.Shapes)

{

string shapeLabel = shape.LayerMem.LayerMember.Value == "0" ? "Background" : (shape.Master == null ? shape.Name : shape.Master.Name);

listShapes.Items.Add(shape.ID.ToString() + "-" + shapeLabel);

if (shapeLabel != "Background")

{

try

//// create a shape in Nevron

AddShapeToDocument(shapeLabel, new NRectangleF(

(float)shape.XForm.LocPinX.Value,

(float)shape.XForm.LocPinY.Value,

(float)shape.XForm.Width.Value,

(float)shape.XForm.Height.Value), layers, shape.ID);

layers++;

}

catch (Exception ex)

{

string error = ex.Message;

}

}

else

//AddBackgroundToDocument(shape);

if (page.Connects.Count > 0)

{

foreach (Aspose.Diagram.Connect connect in page.Connects)

{

listConnects.Items.Add("From shape " + connect.FromSheet + " to shape" + connect.ToSheet);

}

}

}

}

private void AddShapeToDocument(string shapeName, NRectangleF bounds, int layerID, long id)

{

Random rndm = new Random(DateTime.Now.Millisecond);

//// create a device mapped to future device for demonstration

NModel newShape = ((IPAAShapes.GetChildByName(shapeName) as NMaster).Nodes[0].Clone() as NModel);

newShape.Tag = new ShapeInfo { Device = new DeviceImport(), ShapeType = shapeName };

newShape.Bounds = new NRectangleF(rndm.Next(900), rndm.Next(900), 25f, 25f);

newShape.UniqueId = Guid.NewGuid();

(newShape.Tag as ShapeInfo).Device.ShapeGuid = newShape.UniqueId;

((NShape)newShape).CreateShapeElements(ShapeElementsMask.Ports);

((NShape)newShape).Id = (int)id;

((NShape)newShape).UniqueId = Guid.NewGuid();

((NShape)newShape).Name = "shapeName" + layerID.ToString();

NDynamicPort port = new NDynamicPort(newShape.UniqueId, ContentAlignment.MiddleCenter, DynamicPortGlueMode.GlueToContour);

((NShape)newShape).Ports.AddChild(port);

((NShape)newShape).Ports.DefaultInwardPortUniqueId = port.UniqueId;

//document.ActiveLayer.AddChild(oldShape);

((NLayer)document.Layers.Children(null)[layerID]).AddChild((NShape)newShape);

}