Using SQL Query with Asp MVC5

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Using SQL Query with Asp MVC5

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#1 by (2 votes)

0

How do I execute a SQL query with ASP MVC5 + Entity?

To create the MVC I used the entity's own option (I created the model, context) and already generated the controller and the views

Follow the controller code:

using System;
using System.Collections.Generic;
using System.Data;
using System.Data.Entity;
using System.Linq;
using System.Net;
using System.Web;
using System.Web.Mvc;

namespace TeZ.Models
{
    public class MembersController : Controller
    {
        private MembersContext db = new MembersContext();

        // GET: Members
        public ActionResult Index()
        {
            return View(db.members.ToList());
        }

        // GET: Members/Details/5
        public ActionResult Details(int? id)
        {
            if (id == null)
            {
                return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
            }
            Member member = db.members.Find(id);
            if (member == null)
            {
                return HttpNotFound();
            }
            return View(member);
        }

        // GET: Members/Create
        public ActionResult Create()
        {
            return View();
        }

        // POST: Members/Create
        // To protect from overposting attacks, please enable the specific properties you want to bind to, for 
        // more details see https://go.microsoft.com/fwlink/?LinkId=317598.
        [HttpPost]
        [ValidateAntiForgeryToken]
        public ActionResult Create([Bind(Include = "mbMatricula,mbName,mbFunc,mbMail,mbPic,mbPass,mbActive")] Member member)
        {
            if (ModelState.IsValid)
            {
                db.members.Add(member);
                db.SaveChanges();
                return RedirectToAction("Index");
            }

            return View(member);
        }

        // GET: Members/Edit/5
        public ActionResult Edit(int? id)
        {
            if (id == null)
            {
                return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
            }
            Member member = db.members.Find(id);
            if (member == null)
            {
                return HttpNotFound();
            }
            return View(member);
        }

        // POST: Members/Edit/5
        // To protect from overposting attacks, please enable the specific properties you want to bind to, for 
        // more details see https://go.microsoft.com/fwlink/?LinkId=317598.
        [HttpPost]
        [ValidateAntiForgeryToken]
        public ActionResult Edit([Bind(Include = "mbMatricula,mbName,mbFunc,mbMail,mbPic,mbPass,mbActive")] Member member)
        {
            if (ModelState.IsValid)
            {
                db.Entry(member).State = EntityState.Modified;
                db.SaveChanges();
                return RedirectToAction("Index");
            }
            return View(member);
        }

        // GET: Members/Delete/5
        public ActionResult Delete(int? id)
        {
            if (id == null)
            {
                return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
            }
            Member member = db.members.Find(id);
            if (member == null)
            {
                return HttpNotFound();
            }
            return View(member);
        }

        // POST: Members/Delete/5
        [HttpPost, ActionName("Delete")]
        [ValidateAntiForgeryToken]
        public ActionResult DeleteConfirmed(int id)
        {
            Member member = db.members.Find(id);
            db.members.Remove(member);
            db.SaveChanges();
            return RedirectToAction("Index");
        }

        protected override void Dispose(bool disposing)
        {
            if (disposing)
            {
                db.Dispose();
            }
            base.Dispose(disposing);
        }
    }
}

c# asp.net entity-framework-6 asp.net-mvc

asked by anonymous 15.01.2018 / 18:50

1 answer

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score 2 · Answer 1

I'll give you an answer based on what you said in the comments.

First, to execute a Count on a database table and return its value, you can use the Count method on the DbSet representing the table ( members is the DbSet in this case).

For this value to be "sent" to a view , you need to specify this in the View() method call.

public class MembersController : Controller
{
    private MembersContext db = new MembersContext();

    public ActionResult Contador()
    {
        var count = db.members.Count();
        return View(count);
    }
}