using Syncfusion.Windows.Forms.Diagram;
using Syncfusion.Windows.Forms.Diagram.Controls;

// Create diagram control
Diagram diagram = new Diagram();
diagram.Size = new Size(800, 600);
diagram.HScroll = true;
diagram.VScroll = true;
diagram.ShowRulers = true;

// Create and attach model
Model model = new Model();
diagram.Model = model;

// Create a start node (ellipse)
Ellipse startNode = new Ellipse(100, 100, 120, 80);
startNode.FillStyle.Color = Color.LightGreen;
startNode.FillStyle.ForeColor = Color.Green;
startNode.LineStyle.LineColor = Color.DarkGreen;
startNode.LineStyle.LineWidth = 2;

Label startLabel = new Label();
startLabel.Text = "Start";
startLabel.FontColorStyle.Color = Color.Black;
startNode.Labels.Add(startLabel);

model.AppendChild(startNode);

// Create a process node (rectangle)
Syncfusion.Windows.Forms.Diagram.Rectangle processNode = 
    new Syncfusion.Windows.Forms.Diagram.Rectangle(300, 100, 120, 80);
processNode.FillStyle.Color = Color.LightBlue;
processNode.LineStyle.LineColor = Color.DarkBlue;
processNode.LineStyle.LineWidth = 2;

Label processLabel = new Label();
processLabel.Text = "Process";
processLabel.FontColorStyle.Color = Color.Black;
processNode.Labels.Add(processLabel);

model.AppendChild(processNode);

// Connect nodes with an orthogonal connector
OrthogonalConnector connector = 
    new OrthogonalConnector(startNode.PinPoint, processNode.PinPoint);
connector.LineStyle.LineColor = Color.Gray;
connector.LineStyle.LineWidth = 2;
connector.HeadDecorator.DecoratorShape = DecoratorShape.Filled45Arrow;

startNode.CentralPort.TryConnect(connector.TailEndPoint);
processNode.CentralPort.TryConnect(connector.HeadEndPoint);

model.AppendChild(connector);

// Add diagram to form
this.Controls.Add(diagram);

// Setup diagram with all helper controls
Diagram diagram = new Diagram();
diagram.Dock = DockStyle.Fill;
Model model = new Model();
diagram.Model = model;

// Add Overview control
OverviewControl overview = new OverviewControl();
overview.Dock = DockStyle.Left;
overview.Diagram = diagram;

// Add PaletteGroupBar for symbols
PaletteGroupBar paletteBar = new PaletteGroupBar();
paletteBar.Dock = DockStyle.Left;
paletteBar.LoadPalette("BasicShapes.edp");
paletteBar.LoadPalette("FlowchartSymbols.edp");

// Add PropertyEditor
PropertyEditor propertyEditor = new PropertyEditor();
propertyEditor.Dock = DockStyle.Right;
propertyEditor.Diagram = diagram;

// Add DocumentExplorer
DocumentExplorer docExplorer = new DocumentExplorer();
docExplorer.Dock = DockStyle.Right;
docExplorer.AttachModel(model);

// Add all to form
this.Controls.Add(diagram);
this.Controls.Add(overview);
this.Controls.Add(paletteBar);
this.Controls.Add(propertyEditor);
this.Controls.Add(docExplorer);

// Activate rectangle tool for drawing rectangles
diagram.Controller.ActivateTool("RectangleTool");

// Activate line connector tool
diagram.Controller.ActivateTool("LineLinkTool");

// Activate selection tool (default)
diagram.Controller.ActivateTool("SelectTool");

// Configure tool settings
Tool tool = diagram.Controller.ActiveTool;
if (tool is LineConnectorTool lineConnector)
{
    lineConnector.HeadDecorator.DecoratorShape = DecoratorShape.Filled45Arrow;
    lineConnector.TailDecorator.DecoratorShape = DecoratorShape.Circle;
}

// Create a new layer
Layer backgroundLayer = new Layer();
backgroundLayer.Name = "Background";
backgroundLayer.Visible = true;
backgroundLayer.Enabled = true;
model.Layers.Add(backgroundLayer);

// Add nodes to specific layer
Rectangle node = new Rectangle(50, 50, 100, 60);
backgroundLayer.AppendChild(node);

// Set active layer
model.ActiveLayer = backgroundLayer;

// Toggle layer visibility
backgroundLayer.Visible = false;
diagram.Refresh();

// Create nodes
List<Node> nodes = new List<Node>();
for (int i = 0; i < 10; i++)
{
    Rectangle node = new Rectangle(0, 0, 80, 50);
    node.Name = "Node" + i;
    model.AppendChild(node);
    nodes.Add(node);
}

// Apply hierarchical layout
HierarchicalLayout layout = new HierarchicalLayout(model, model.Bounds);
layout.HorizontalSpacing = 50;
layout.VerticalSpacing = 50;
layout.Orientation = LayoutOrientation.TopToBottom;
layout.Layout();

diagram.UpdateView();

// Save diagram to file
diagram.SaveBinary("MyDiagram.edd");

// Load diagram from file
diagram.LoadBinary("MyDiagram.edd");
diagram.Refresh();

// Save model only
model.Save("MyModel.xml");

// Load model
Model loadedModel = Model.Load("MyModel.xml");
diagram.Model = loadedModel;