I have a View called InformationView.xaml and this same View is re-used to display the same information from 3 different sources (each view has a different window title). Each View has their datacontext set the same instance of one ViewModel type. Within my ViewModel class, I have an ICommand property that the 'Close' button inside the View is bound to. -- Is there a way to determine who the sender was of the command? (specifically, by window title).

Here is an example:

I have a view class with the following button ("Note: each View will have a different window title / display data from a different source--but the same View is used)

```
<Button Width="75" Height="23" Margin="0,0,5,5" Content="Close" Command="{Binding CloseCommand}" />

```

I have a ViewModel class with the following command

```
    public ICommand CloseCommand
    {
        get
        {
            if (this._closeCommand == null)
            {
                this._closeCommand = new RelayCommand(Command => this.OnClose());
            }     
            return _closeCommand;
        }
    }

```

I am looking for a way to determine which window executed the command (I will have multiple instances of the View using the same ViewModel).