MVC 自定义 以表达式树为参数的htmlhelper

public static MvcHtmlString Try<TModel, TProperty>(



    this HtmlHelper<TModel> htmlHelper, 



    Expression<Func<TModel, TProperty>> expression



)



{



    var builder = new TagBuilder("textarea");



    builder.AddCssClass("ckeditor");



    builder.MergeAttribute("cols", "80");



    builder.MergeAttribute("name", "editor1");



    builder.MergeAttribute("id", expression.Name); // not sure about the id - verify



    var value = ModelMetadata.FromLambdaExpression(



        expression, htmlHelper.ViewData



    ).Model;



    builder.SetInnerText(value.ToString());



    return MvcHtmlString.Create(builder.ToString());



}

参考凌鸢的文章。