mvc dropdownlist from database

This article briefly introduces the usage and Correction Methods of DropDownList in net mvc. Recently, my younger brother found a bug in DropDownList in. net mvc development. The following describes the occurrence of bugs. First, check the Controller code: Public ActionResult Index (){List Country. Add (new SelectListI

Recently, my younger brother found a bug in DropDownList in. net mvc development. The following describes the occurrence of bugs.First, check the Controller code:Public ActionResult Index () {List Country. Add (new SelectListItem () {Text = "China", Value = "1", Selected = true });Country. Add (new SelectListItem () {Text = "", Value = "2 "});Country. Add (new SelectL

viewdata["modulelist"] = new SelectList (new El_basic_moduleinfo (). Rows (). AsEnumerable (), "ModuleID", "name", Objel_userinfo.moduleid);The first parameter is the data obtained by the queryThe second parameter is the ID of the binding, the field propertyThe fourth parameter is the value of the default bindingFront binding@Html. DropDownList ("Drpmodule", (selectlist) viewdata["Modulelist"], "--select one--", new{@class = "Form-control"})In

ListNewList(); Zh. ADD (NewSelectListItem {Text ="ZH1", Value ="ZH1" }); Zh. ADD (NewSelectListItem {Text ="ZH2", Value ="ZH2" }); Zh. ADD (NewSelectListItem {Text ="ZH3", Value ="ZH3"});And then"DDL"] = ZH%>Last Show"DDL")%>Background data extraction via post,formcollection Public ActionResult Index (formcollection collection) { string zh = collection["DDL "null" : collection["DDL"]. Trim ();}in ASP. NET MVC, the foreground

I. Understanding ASP. NET Binding DatabaseFinally learned the connection database part of the content, Yang Zhengko teacher video looks very easy, if the HD version is more OK.I found that I learn a new programming language will have a feature, all want to quickly learn the database, data is everything, have the data to operate all the reasons for it. Now it's very reassuring to be able to connect to databa

ASP tutorial. NET DropDownList bound database tutorial dataDefinitions and usageThe DropDownList control is used to create a drop-down list. Each optional option in the DropDownList control is defined by the ListItem element! Tip: This control supports data binding!PropertyProperty describes. NETIndex number 1.0 of t

DropDownList control binds database data: DB is a public class, Redt is a method in a public classPut it in the Page_Load event. if(!IsPostBack) {db db=NewDB (); DataTable DT= Db.redt ("SELECT * from Provinceinfo ORDER by Provinceid ASC"); Ddlsmprovince. DataSource=DT; Ddlsmprovince. DataTextField= Ddlsmprovince. DataValueField ="Province"; Ddlsmprovince. DataBind (); Ddlsmprovince. Items.inser

Com.guodiantong.mvc.domain.Customer; Import Com.guodiantong.mvc.impl.CustomerDaoJdbcImpl; public class Customerservlet extends HttpServlet {Customerdao customerdao=new customerdaojdbcimpl (); @Override protected void doget (HttpServletRequest req, HttpServletResponse resp) throws Servletexception, IOException {DoPost (req, resp); } @Override protected void DoPost (HttpServletRequest req, HttpServletResponse resp) throws Servletexception, Ioexcep tion {String servletpath=req.getservletp

Implementation of design features:----does not have a business layer that calls DAO directly from the servlet, so there is no transactional operation, so get the connection object directly from the DAO----using MVC Design PatternsThe technology used in----。 MVC design Pattern, Jsp,servlet,pojo。 Database using MySQL。 Database