aistudio-wpf-diagram/AIStudio.Wpf.DiagramDesigner.Demo/ViewModels/Customization/ThickLinkViewModel.cs

using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Text;
using System.Windows;

namespace AIStudio.Wpf.DiagramDesigner.Demo.ViewModels
{
    class ThickLinkViewModel : BaseViewModel
    {
        public ThickLinkViewModel()
        {
            Title = "Custom link";
            Info = "Creating your own custom links is very easy!";

            _service.ColorViewModel.FillColor.Color = System.Windows.Media.Colors.Orange;

            DiagramViewModel = new DiagramViewModel();
            DiagramViewModel.PageSizeType = PageSizeType.Custom;
            DiagramViewModel.PageSize = new Size(double.NaN, double.NaN);

            DefaultDesignerItemViewModel node1 = new DefaultDesignerItemViewModel() { Left = 50, Top = 50, Text = "1" };
            DiagramViewModel.DirectAddItemCommand.Execute(node1);

            DefaultDesignerItemViewModel node2 = new DefaultDesignerItemViewModel() { Left = 300, Top = 300, Text = "2" };
            DiagramViewModel.DirectAddItemCommand.Execute(node2);

            DefaultDesignerItemViewModel node3 = new DefaultDesignerItemViewModel() { Left = 300, Top = 50, Text = "3" };
            DiagramViewModel.DirectAddItemCommand.Execute(node3);

            ConnectionViewModel connector1 = new ConnectionViewModel(node1.RightConnector, node2.LeftConnector, DrawMode.ConnectingLineSmooth, RouterMode.RouterNormal);
            connector1.ColorViewModel.LineWidth = 6;
            connector1.ColorViewModel.LineColor.BrushType = BrushType.LinearGradientBrush;
            connector1.ColorViewModel.LineColor.GradientStop = new ObservableCollection<GradientStop>();
            connector1.ColorViewModel.LineColor.GradientStop.Add(new GradientStop(System.Windows.Media.Colors.Red, 0));
            connector1.ColorViewModel.LineColor.GradientStop.Add(new GradientStop(System.Windows.Media.Colors.Gray, 1)); 
            DiagramViewModel.DirectAddItemCommand.Execute(connector1);

            ConnectionViewModel connector2 = new ConnectionViewModel(node2.RightConnector, node3.RightConnector, DrawMode.ConnectingLineStraight, RouterMode.RouterOrthogonal);
            connector2.ColorViewModel.LineWidth = 6;
            connector2.ColorViewModel.LineColor.Color = System.Windows.Media.Colors.Blue;
            DiagramViewModel.DirectAddItemCommand.Execute(connector2);

            DiagramViewModel.ClearSelectedItemsCommand.Execute(null);
        }
    }
}