public void To(Expression <Func <TContext, ICommand> > destinationExpression)
{
var contextParameter = destinationExpression.Parameters[0];
var commandParameter = Expression.Parameter(typeof(ICommand));
var assignCommand =
Binder.ExpressionCompiler.Compile(
Expression.Lambda <Action <TContext, ICommand> >(
Expression.Assign(
destinationExpression.Body,
commandParameter),
contextParameter,
commandParameter));
var getCommand = Binder.ExpressionCompiler.Compile(destinationExpression);
var canExecute = Binder.ExpressionCompiler.Compile(_canExecuteExpression);
var key = _key ?? destinationExpression.GetTargetKey();
_dependencies.Add(_canExecuteExpression);
_binder.AddRule(ctx => assignCommand(ctx, new ActionCommand(ctx, _executeAction, canExecute, _hasParameter, _canExecuteCheckMode)), key, _debugContext.CreateContext(typeof(TContext).Name, key), true, true, Enumerable.Empty <LambdaExpression>());
_binder.AddRule(ctx => UpdateCanExecuteOnCommand(getCommand(ctx)), key, _debugContext.CreateContext(typeof(TContext).Name, key + "_CanExecute"), true, false, _dependencies);
}
private void AddRule(Action <TContext> action, string key)
{
_binder.AddRule(_debugAction == null ? action : _debugAction + action, key, _debugContext.CreateContext(typeof(TContext).Name, key), _runOnAttach, _canOverride, _dependencies);
}