, если ваша viewmodel это свойство в окне, вы можете сделать это
ItemsSource="{Binding RelativeSource={RelativeSource AncestorType={x:Type Window}}, Path=ViewModel.StateList, Mode=OneWay}"
<Window x:Class="WpfStackOverflowSpielWiese.Window2"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Window2"
Height="300"
Width="300"
x:Name="window">
<Grid DataContext="{Binding ElementName=window, Path=ViewModel}">
<DataGrid x:Name="grid"
AutoGenerateColumns="False"
ItemsSource="{Binding AddressCollectionViewSource, Mode=OneWay}">
<DataGrid.Columns>
<DataGridTemplateColumn Header="State"
Width="160">
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<TextBlock Text="{Binding StateKey}" />
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
<DataGridTemplateColumn.CellEditingTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<ComboBox Name="cboState"
SelectedValuePath="StateKey"
ItemsSource="{Binding RelativeSource={RelativeSource AncestorType={x:Type Window}}, Path=ViewModel.StateList, Mode=OneWay}"
SelectedItem="{Binding StateKey, Mode=TwoWay}"
Width="100" />
</StackPanel>
</DataTemplate>
</DataGridTemplateColumn.CellEditingTemplate>
</DataGridTemplateColumn>
</DataGrid.Columns>
</DataGrid>
</Grid>
</Window>
using System.Collections.ObjectModel;
using System.Windows;
namespace WpfStackOverflowSpielWiese
{
/// <summary>
/// Interaction logic for Window2.xaml
/// </summary>
public partial class Window2 : Window
{
public static readonly DependencyProperty ViewModelProperty =
DependencyProperty.Register("ViewModel", typeof(ViewModelClass), typeof(Window2), new PropertyMetadata(default(ViewModelClass)));
public ViewModelClass ViewModel {
get { return (ViewModelClass)this.GetValue(ViewModelProperty); }
set { this.SetValue(ViewModelProperty, value); }
}
public Window2() {
this.InitializeComponent();
this.grid.Items.Clear();
this.ViewModel = new ViewModelClass();
}
}
public class StateClass : DependencyObject
{
public static readonly DependencyProperty StateKeyProperty =
DependencyProperty.Register("StateKey", typeof(string), typeof(ViewModelClass), new PropertyMetadata(default(string)));
public string StateKey {
get { return (string)this.GetValue(StateKeyProperty); }
set { this.SetValue(StateKeyProperty, value); }
}
public static readonly DependencyProperty StateProperty =
DependencyProperty.Register("State", typeof(string), typeof(StateClass), new PropertyMetadata(default(string)));
public string State {
get { return (string)this.GetValue(StateProperty); }
set { this.SetValue(StateProperty, value); }
}
}
public class ViewModelClass : DependencyObject
{
public static readonly DependencyProperty StateListProperty =
DependencyProperty.Register("StateList", typeof(ObservableCollection<string>), typeof(ViewModelClass), new PropertyMetadata(default(ObservableCollection<string>)));
public static readonly DependencyProperty AddressCollectionViewSourceProperty =
DependencyProperty.Register("AddressCollectionViewSource", typeof(ObservableCollection<StateClass>), typeof(ViewModelClass), new PropertyMetadata(default(ObservableCollection<StateClass>)));
public ObservableCollection<StateClass> AddressCollectionViewSource {
get { return (ObservableCollection<StateClass>)this.GetValue(AddressCollectionViewSourceProperty); }
set { this.SetValue(AddressCollectionViewSourceProperty, value); }
}
public ObservableCollection<string> StateList {
get { return (ObservableCollection<string>)this.GetValue(StateListProperty); }
set { this.SetValue(StateListProperty, value); }
}
public ViewModelClass() {
this.StateList = new ObservableCollection<string>(new[] {"one", "two"});
this.AddressCollectionViewSource = new ObservableCollection<StateClass>(new[] {new StateClass {State = "state", StateKey = "one"}});
}
}
}