Sample use of Eto and Rhino

gistfile1.cs

using System;
using Eto.Forms;
using Eto.Drawing;
using Eto;
using System.Collections.Generic;

namespace EtoRhinoTests
{
  public class EtoRhinoCommand : Rhino.Commands.Command
  {
    public override string EnglishName { get { return "TestEtoRhino"; } }

    public EtoRhinoCommand()
    {
      // The following code would typically be run at start from the hosting
      // code (RhinoCommon, RhinoWindows, or RhinoMac)
      new Application().Attach();

      // Make things look a little different on each platform
      if (Platform.Instance.IsMac)
      {
        Style.Add<Label>("heading", label => label.HorizontalAlign = HorizontalAlign.Right);
        Style.Add<Button>("ok", b => b.Text = "Apply");
        Style.Add<Button>("cancel", b => b.Text = "Cancel");
      }
      else
      {
        Style.Add<Button>("ok", b => b.Text = "OK");
        Style.Add<Button>("cancel", b => b.Text = "Cancel");
      }
    }

    // Simple container of state information. Controls can be bound
    // to this class
    public class MyClass
    {
      string myProperty;

      public string MyProperty
      {
        get { return myProperty; }
        set
        {
          myProperty = value;
          Rhino.RhinoApp.WriteLine("Set property to {0}", value);
        }
      }

      public int SliderValue { get; set; }
      public string TextAreaValue { get; set; }
      public bool CheckValue { get; set; }
      public PointF EndPoint { get; set; }
    }

    protected override Rhino.Commands.Result RunCommand(Rhino.RhinoDoc doc, Rhino.Commands.RunMode mode)
    {
      // Create a sample dialog with several bound controls and
      // show it modal to Rhino

      var textBox = new TextBox();
      textBox.TextBinding.BindDataContext<MyClass>(inst => inst.MyProperty, (inst, val) => inst.MyProperty = val);
      //tb.BindDataContext<MyClass>(new DelegateBinding<TextBox, bool> (tbb => tbb.Visible), new DelegateBinding<MyClass, bool> (inst => inst.IsVisible), DualBindingMode.TwoWay);

      var textArea = new TextArea();
      textArea.TextBinding.BindDataContext<MyClass>(inst => inst.TextAreaValue, (inst, val) => inst.TextAreaValue = val);

      var checkBox = new CheckBox();
      checkBox.CheckedBinding.BindDataContext<MyClass>(inst => inst.CheckValue, (inst, val) => inst.CheckValue = val ?? false);

      var slider = new Slider { TickFrequency = 25, MaxValue = 100 };
      // note: need to add slider.ValueBinding
      var binding = new ObjectBinding<Slider, int>(slider, c => c.Value, (c, v) => c.Value = v, (c, h) => c.ValueChanged += h, (c, h) => c.ValueChanged -= h);
      binding.BindDataContext<MyClass>(inst => inst.SliderValue, (inst, val) => inst.SliderValue = val);

      Dialog dlg = null;

      bool isDown = false;
      var drawable = new Drawable { Size = new Size(200, 200) };
      drawable.Paint += (sender, e) =>
      {
        var myClass = drawable.DataContext as MyClass;
        if (myClass != null)
          e.Graphics.DrawLine(Colors.Blue, PointF.Empty, myClass.EndPoint);
      };

      drawable.MouseDown += (sender, e) =>
      {
        isDown = true;
        e.Handled = true;
      };
      drawable.MouseUp += (sender, e) =>
      {
        isDown = false;
        e.Handled = true;
      };

      drawable.MouseMove += (sender, e) =>
      {
        if (isDown)
        {
          var myClass = drawable.DataContext as MyClass;
          if (myClass != null)
          {
            myClass.EndPoint = e.Location;
            drawable.Invalidate();
            e.Handled = true;
          }
        }
      };

      int recordCount = 0;
      Action updateRecord = () =>
      {
        var rand = new Random();
        dlg.DataContext = new MyClass
        {
          MyProperty = "Record " + recordCount,
          SliderValue = rand.Next(0, 100),
          TextAreaValue = "Text " + recordCount,
          CheckValue = rand.Next(2) == 0,
          EndPoint = new PointF(rand.Next(drawable.Size.Width), rand.Next(drawable.Size.Height))
        };
        recordCount++;
        drawable.Invalidate();
      };

      var okButton = new Button { Style = "ok" };
      okButton.Click += (sender, e) => dlg.Close();

      var cancelButton = new Button { Style = "cancel" };
      cancelButton.Click += (sender, e) => dlg.Close();

      var fahrvegnugenButton = new Button { Text = "fahrvergnügen!!!!!!" };
      fahrvegnugenButton.Click += (sender, e) => updateRecord();

      IEnumerable<TableCell> buttons;
      if (Platform.Instance.IsMac)
        buttons = new TableCell[] { null, fahrvegnugenButton, cancelButton, okButton };
      else
        buttons = new TableCell[] { null, fahrvegnugenButton, okButton, cancelButton };

      dlg = new Dialog
      {
        Title = "My Dialog",
        DefaultButton = okButton,
        AbortButton = cancelButton,
        Resizable = true,
        Content = new TableLayout(
            new TableRow(new TableLayout(
                    new TableRow(new Label { Text = "Text Box", Style = "heading" }, textBox),
                    new TableRow(new Label { Text = "Text Area", Style = "heading" }, textArea),
                    new TableRow(new Label { Text = "Slider", Style = "heading" }, slider),
                    new TableRow(new Label { Text = "Check Box", Style = "heading" }, checkBox),
                    new TableRow(new Label { Text = "Drawable", Style = "heading" }, drawable) { ScaleHeight = true }
                )) { ScaleHeight = true },
            new TableLayout(new TableRow(buttons))
        )
      };
      updateRecord();
      dlg.ShowModal();
      return Rhino.Commands.Result.Success;
    }
  }
}

Compiling this example gives a type error in line 74:

Error CS1929: Type Eto.Forms.ObjectBinding<Eto.Forms.Slider,int>' does not contain a memberBindDataContext' and the best extension method overload Eto.Forms.BindableExtensions.BindDataContext<MyProject.EtoRhinoCommand.MyClass>(this Eto.Forms.IBindable, string, string, Eto.Forms.DualBindingMode, MyProject.EtoRhinoCommand.MyClass,MyProject.EtoRhinoCommand.MyClass)' requires an instance of typeEto.Forms.IBindable' (CS1929) (MyProject)

How can I fix it?