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Drop Down List Selected Value problem ...

Posted By:      Posted Date: September 20, 2010    Points: 0   Category :ASP.Net


I created an Html Helper that renders 3 drop down lists (Day, Month and Year) for a field of type DateTime:

    public static MvcHtmlString Date(this HtmlHelper htmlHelper, String name, IEnumerable<SelectListItem> days, IEnumerable<SelectListItem> months, IEnumerable<SelectListItem> years, IDictionary<String, Object> htmlAttributes) {

      if (String.IsNullOrEmpty(name)) throw new ArgumentNullException("name", "Name cannot be null");

      StringBuilder fields = new StringBuilder();

      if (days != null)
        fields.Append(htmlHelper.DropDownList(String.Format("{0}.Day", name), days, String.Empty, htmlAttributes));

      if (months != null)
        fields.Append(htmlHelper.DropDownList(String.Format("{0}.Month", name), months, String.Empty, htmlAttributes));

      if (years != null)
        fields.Append(htmlHelper.DropDownList(String.Format("{0}.Year", name), years, String.Empty, htmlAttributes));

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

    } // Date

And I have a DateFor extension:

    public static MvcHtmlString DateFor<TModel, TProperty>(this HtmlHelper<TModel> htmlHelper, Expression<Func<TModel, TProperty>> expression, IEnumerable<S

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