How to add multiple text to a node

Use either TableNode with multiple cells or CompositeNode with multiple TextComponents. If you prefer ShapeNodes, you could set CustomDraw = Additional and draw more text by calling e.Graphics.DrawString from DrawNode event handler.

Excuse me, can you give me an example?

For TableNodes check ClassDiagram or InteractiveTable examples. For CompositeNodes check the Scripting and Demo (EmployeeNode.cs) examples. For custom drawing example see e.g. https://mindfusion.eu/Forum/YaBB.pl?num=1355256377/3#3 , you will need to set node's CustomDraw property to get the event raised.

Regards,
Slavcho

Can Override Shape to Add multiple text?

You can create a custom node class and override its DrawLocal method -

[code]
class ShapeNodeEx : ShapeNode
{
     public string MoreText { get; set; }

     public override void DrawLocal(IGraphics graphics, RenderOptions options)
     {
           base.DrawLocal(graphics, options);
           graphics.DrawString(MoreText, EffectiveFont, Brushes.Black, 1, 1);
     }
}[/code]

Alternatively keep an array of strings as value of Tag property, and draw them in a loop from DrawNode event handler with CusotmDraw property set.

Regards,
Slavcho

how to Create a ShapeNodeEx?
Cannot that:
ShapeNodeEx b = diagram.Factory.CreateShapeNode(pt, new SizeF(20, 20));

[code]
var b = new ShapeNodeEx();
b.Bounds = new RectangleF(...);
diagram.Nodes.Add(b);[/code]

Regards,
Slavcho

How do I put the position of SHAPE in the center?

---

b.TextFormat.Alignment = StringAlignment.Center;
b.TextFormat.LineAlignment = StringAlignment.Center;

Use the DrawString overload that takes a Rectangle and StringFormat arguments, passing node.GetLocalBounds() and your StringFormat as values.

Regards,
Slavcho

thx

how to convert diagram.Nodes to ShapeNodeEx?

Nodes could contain instances of multiple types. You can use the as operator to determine type while looping over the collection -

Code (]
foreach (var node in diagram.Nodes)
{
    var exNode = node as ShapeNodeEx;
    if (exNode != null)
        ...
}
[/code):

or get filtered collection using Linq's OfType extension - [code] var exNodes = diagram.Nodes.OfType<ShapeNodeEx>();

        private void LoadFCSfile(string fn)
        {
            diagramView.LoadFromFile(fn);
            bool btag = false, bp = false;
            foreach (DiagramNode node in diagram.Nodes)
            {
                if (node is ControlNode)
                {
                    btag = true;
                }
                else
                {
                    ShapeNodeEx b = node as ShapeNodeEx;
                    if (b.Shape.ToString() == "MyBlock")  //b is null, ShapeNode b, OK
                    {
                        bp = true;
                    }
                }
            }
        }

b is null
when ShapeNodeEx is ShapeNode, OK

Try with  -

[code]
if (b != null && b.Shape.ToString() == "MyBlock")
[/code]

ShapeNode B = node as ShapeNode;
B not null
ShapeNodeEx B = node as ShapeNodeEx;
B is null

I want to get the data from B

You aren't adding ShapeNodeEx-es to diagram.Nodes then, if building diagrams from code. If you are letting users draw interactively, set DiagramView.Behavior = Custom and CustomNodeType = typeof(ShapeNodeEx) to get ShapeNodeEx instances.

how to save and open?

Call RegisterItemClass() to register your custom type for serialization. Implement either SaveTo / LoadFrom methods for binary serialization or SaveToXml / LoadFromXml ones for XML one. E.g. see these topics -

https://mindfusion.eu/Forum/YaBB.pl?num=1203351980/0#0
https://mindfusion.eu/Forum/YaBB.pl?num=1336836718/3#3

Code (c++):

public MainForm()            {                  InitializeComponent();             Diagram.RegisterItemClass(typeof(ShapeNodeEx), "ShapeNodeEx", 1); ...... }         class ShapeNodeEx : ShapeNode         {             public ShapeNodeEx(ShapeNode prototype) : base(prototype)             {             }             public ShapeNodeEx()             {             }             public string MoreText { get; set; }             public override void DrawLocal(Drawing.IGraphics graphics, RenderOptions options)             {                 base.DrawLocal(graphics, options);                 StringFormat drawFormat = new StringFormat();                 graphics.DrawString(MoreText, new Font("Yahei", 7), Brushes.DarkBlue , (float)(Bounds.Width * .5), (float)(Bounds.Height*.85), drawFormat);             }             protected override void SaveTo(System.IO.BinaryWriter writer, PersistContext ctx)             {                 base.SaveTo(writer, ctx);             }             protected override void LoadFrom(System.IO.BinaryReader reader, PersistContext ctx)             {                 base.LoadFrom(reader, ctx);             }         }

But the data is disorganized after loading

You must save and load your property values from respective methods implementations -

[code]
protected override void SaveTo(System.IO.BinaryWriter writer, PersistContext ctx)
{
     base.SaveTo(writer, ctx);
     writer.Write(MoreText);
}

protected override void LoadFrom(System.IO.BinaryReader reader, PersistContext ctx)
{
     base.LoadFrom(reader, ctx);
     MoreText = reader.ReadString();
}[/code]

Perfect,
Thx