ASP. NET MVC page value--DropDownList

Background Pass Value

            list<configparaminfo> paramlist = Configparambll.getmodellist ("and parentid=1");            viewdata["UserState"] = new SelectList (paramlist, "value", "name");

Front Page

@Html. DropDownList ("userstate", viewdata["userstate"] as SelectList, "--Please select--", new {@class = "Form-control input-sm"})

                //Abstract:         //     use the specified HTML Helper, the form linked fields, the specified list items, the options tag, and the specified HTML, to return a single select item. ////        Parameters:////HtmlHelper://     This method is an expanded HTML Helper. ////   Name:        //     linked fields-bit name of the form to be returned. /////   selectlist: A        collection of     System.Web.Mvc.SelectListItem objects that are used to fill in the drop-down checklist. /////        Optionlabel://     Preset blank text for the purpose. This can be null. ////   htmlattributes:        //     object containing the HTML that is to be set for the item. ////        Fax:         //     HTML Select item, where each item in the list contains an option sub-item. /////        Exceptions:/         /   System.ArgumentException:        //     The name parameters are null or blank. Public        static mvchtmlstring DropDownList (This htmlhelper htmlhelper, string name, Ienumerable<selectlistitem > SelectList, String Optionlabel, Object htmlattributes);

　　

ASP. NET MVC page value--DropDownList