MVC получить идентификатор для экспорта в Excel

Question

Я пытаюсь экспортировать файл Excel на основе разных таблиц в моей базе данных.Тем не менее, идентификатор, который я хочу сравнить, чтобы получить правильные результаты, всегда возвращает 0 .. URL показывает правильный идентификатор при переходе на страницу.

Кто-нибудь знает, как получить удостоверение личности?

заранее спасибо!

        public ActionResult ExportExcel(int id)
    {
        Testmatrix testmatrix = db.Testmatrices.Find(id);
        int testmatrixID = testmatrix.ID;
        var sb = new StringBuilder();
        var data = from s in db.Testmatrices
                   where s.ID == testmatrixID
                   select new
                   {
                       s.courseID,
                       s.userID,
                       s.testDuration
                   };
        var list = data.ToList();
        var data2 = from s in db.Subjects
                    where s.ID == id
                    select new
                    {
                        s.name
                    };
        var list2 = data2.ToList();
        var grid = new System.Web.UI.WebControls.GridView();
        var grid2 = new System.Web.UI.WebControls.GridView();
        grid.DataSource = list;
        grid2.DataSource = list2;
        grid.DataBind();
        grid2.DataBind();
        Response.ClearContent();
        Response.AddHeader("content-disposition", "attachment; filename=Matrijs.xls");
        Response.ContentType = "application/vnd.ms-excel";
        StringWriter sw = new StringWriter();
        System.Web.UI.HtmlTextWriter htw = new System.Web.UI.HtmlTextWriter(sw);
        grid.RenderControl(htw);
        grid2.RenderControl(htw);
        Response.Write(sw.ToString());
        Response.End();
        return RedirectToAction("Index");
    }

Полный код контроллера следующий:

using System;
using System.Collections.Generic;
using System.Data;
using System.Data.Entity;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using System.Web;
using System.Web.Mvc;
using TestgeneratorV01.Models;

namespace TestgeneratorV01.Controllers
{
public class TestmatricesController : Controller
{
    private ContextModel db = new ContextModel();

    // GET: Testmatrices
    public ActionResult Index()
    {
        var testmatrices = db.Testmatrices.Include(t => t.Course).Include(t => t.User);
        return View(testmatrices.ToList());
    }



    // GET: Testmatrices/Details/5
    public ActionResult Details(int? id)
    {
        if (id == null)
        {
            return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
        }

        Testmatrix testmatrix = db.Testmatrices.Find(id);
        Subject subject = db.Subjects.Find(id);

        if (testmatrix == null)
        {
            return HttpNotFound();
        }
        return View(testmatrix);
    }

    // GET: Testmatrices/Create
    public ActionResult Create()
    {
        ViewBag.courseID = new SelectList(db.Courses, "ID", "courseCode");
        ViewBag.userID = new SelectList(db.Users.Where(x => x.userRoleID == 2), "ID", "lastName");
        return View();
    }

    // POST: Testmatrices/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 = "ID,courseID,userID,testDuration")] Testmatrix testmatrix)
    {
        if (ModelState.IsValid)
        {
            db.Testmatrices.Add(testmatrix);
            db.SaveChanges();
            return RedirectToAction("Index");
        }

        ViewBag.courseID = new SelectList(db.Courses, "ID", "courseCode", testmatrix.courseID);
        ViewBag.userID = new SelectList(db.Users, "ID", "userEmail", testmatrix.userID);
        return View(testmatrix);
    }

    // GET: Testmatrices/Edit/5
    public ActionResult Edit(int? id)
    {
        if (id == null)
        {
            return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
        }
        Testmatrix testmatrix = db.Testmatrices.Find(id);
        if (testmatrix == null)
        {
            return HttpNotFound();
        }
        ViewBag.courseID = new SelectList(db.Courses, "ID", "courseCode", testmatrix.courseID);
        ViewBag.userID = new SelectList(db.Users, "ID", "userEmail", testmatrix.userID);
        return View(testmatrix);
    }

    // POST: Testmatrices/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 = "ID,courseID,userID,testDuration")] Testmatrix testmatrix)
    {
        if (ModelState.IsValid)
        {
            db.Entry(testmatrix).State = EntityState.Modified;
            db.SaveChanges();
            return RedirectToAction("Index");
        }
        ViewBag.courseID = new SelectList(db.Courses, "ID", "courseCode", testmatrix.courseID);
        ViewBag.userID = new SelectList(db.Users, "ID", "userEmail", testmatrix.userID);
        return View(testmatrix);
    }

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

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

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

    public ActionResult ExportExcel(int? id)
    {
        Testmatrix testmatrix = db.Testmatrices.Find(id);
        int testmatrixID = testmatrix.ID;
        var sb = new StringBuilder();
        var data = from s in db.Testmatrices
                   where s.ID == testmatrixID
                   select new
                   {
                       s.courseID,
                       s.userID,
                       s.testDuration
                   };
        var list = data.ToList();
        var data2 = from s in db.Subjects
                    where s.ID == id
                    select new
                    {
                        s.name
                    };
        var list2 = data2.ToList();
        var grid = new System.Web.UI.WebControls.GridView();
        var grid2 = new System.Web.UI.WebControls.GridView();
        grid.DataSource = list;
        grid2.DataSource = list2;
        grid.DataBind();
        grid2.DataBind();
        Response.ClearContent();
        Response.AddHeader("content-disposition", "attachment; filename=Matrijs.xls");
        Response.ContentType = "application/vnd.ms-excel";
        StringWriter sw = new StringWriter();
        System.Web.UI.HtmlTextWriter htw = new System.Web.UI.HtmlTextWriter(sw);
        grid.RenderControl(htw);
        grid2.RenderControl(htw);
        Response.Write(sw.ToString());
        Response.End();
        return RedirectToAction("Index");
    }
}
}

Answer 1

Вид был проблемой.Контроллер не получал нужную информацию во время вызова в представлении;

@Html.ActionLink("Export Excel", "ExportExcel", "Testmatrices", new { id = Model.ID }, new { @class = "btn btn-primary" })

Это помогло!