1:
2:
3:
4:
5:
6:
7:
8:
9:

class TypeList : ObservableCollection<string>
{
    public TypeList()
    {
        Add("Type1");
        Add("Type2");
        Add("Type3");
    }
}					

1:

comboBoxType.ItemsSource = myTypeList					

1:

<ComboBox  ItemsSource="{Binding Source=myTypeList, Path=myTypeList}"...........					

1:

<ComboBox  ItemsSource="{Binding Source=myTypeList}"...........					

1:
2:
3:
4:
5:
6:
7:
8:
9:
10:

private TypeList typeList = null;
public TypeList TypeList 
  {
  get 
  {
    if (typeList == null)
      typeList = new TypeList();
    return typeList;
  } 
}					

1:

<Window ... x:Name="window1">					

1:

 <ComboBox ItemsSource="{Binding Path=TypeList, ElementName=window1}"/>					

1:
2:
3:
4:

<Window x:Class="LHistory.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
       x:Name="Test"					

1:

<ComboBox  ItemsSource="{Binding ElementName=Test,Path=ThisTypeList}" .........					

1:
2:
3:
4:
5:
6:
7:
8:
9:
10:
11:

public class TypeList
{
    public TypeList()
    {
        t.Add("Type1");
        t.Add("Type2");
        t.Add("Type3");
    }
    private ObservableCollection<string> t = new ObservableCollection<string>();
    public ObservableCollection<string> List { get { return t; } }
}					

1:
2:
3:
4:
5:

private TypeList t = new TypeList();
public TypeList ThisTypeList
{
    get { return t; }
}					

1:

{Binding ElementName=Test,Path=ThisTypeList.List}