Bind Eto ComboBox to a Dictionary

BindToDictionary.cs

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

class MyModel
{
  public Guid MyGuidProperty {get; set; }
}


public class BindToDictionaryTest : StackLayout
{
  public BindToDictionaryTest()
  {
    var control = new ComboBox();
    // text is the value of the dictionary
    control.ItemTextBinding = Binding.Property((KeyValuePair<Guid, string> r) => r.Value);
    // key is the guid (as a string)
    control.ItemKeyBinding = Binding.Property((KeyValuePair<Guid, string> r) => r.Key).Convert(r => r.ToString());
    
    // create dictionary and set it as the ComboBox's data store
    var dic = new Dictionary<Guid, string>();
    dic.Add(Guid.NewGuid(), "Item 1");
    dic.Add(Guid.NewGuid(), "Item 2");
    dic.Add(Guid.NewGuid(), "Item 3");
    control.DataStore = dic.Cast<object>(); // cast to object as KeyValuePair is a struct
  
    Items.Add(control);
    
    // bind to a Guid property of the DataContext by converting to/from string:
    control.SelectedKeyBinding
      .Convert(r => new Guid(r), g => g.ToString())
      .BindDataContext((MyModel m) => m.MyGuidProperty);
  }
}