@Html.LabelWithInput(...)

gistfile1.cs

public static HtmlTag LabelWithInput<T>(this HtmlHelper<T> helper, Expression<Func<T, object>> expression) where T : class
{
	var generator = GetGenerator<T>();
	var label = generator.LabelFor(expression, model: helper.ViewData.Model);
	var input = generator.InputFor(expression, model: helper.ViewData.Model);

	var div = new DivTag();
	div.AddClass("form-group");
	div.Append(label);
	div.Append(input);

	return div;
}