Old Commander.Fody No longer maintained ,But it's very useful for us.
This is an add-in for Fody 6.2.0
Injects ICommand properties and implementations for use in MVVM applications.
public class SurveyViewModel
{
    [OnCommandCanExecute("SubmitCommand")]
    public bool CanSubmit()
    {
        ... 
    }
    [OnCommand("SubmitCommand")]
    public void OnSubmit(){
        ...
    }        
}
With a command implementation in assembly like:
public class DelegateCommand : ICommand
{
    ...
    public DelegateCommand(Action execute):this(execute, null)
    {        
    }
    public DelegateCommand(Action execute, Func<bool> canExecute)
    {
        ...
    }
    public void Execute(object parameter)
    {
        ...
    }
    public bool CanExecute(object parameter)
    {
        ...
    }    
}
public class SurveyViewModel
{
    SurveyViewModel()
    {
        <Commander_Fody>InitializeCommands();            
    }
    public ICommand SubmitCommand {get;set;}
    public bool CanSubmit(){ 
        ...
    }
    public void OnSubmit(){
        ...
    }   
    private void <Commander_Fody>InitializeCommands()
    {
        if (this.SubmitCommand == null)
        {
            this.SubmitCommand = new DelegateCommand(new Action(this.OnSubmit), new Func<bool>(this.CanSubmit));
        }
    }
}