单击mvc中的链接时，将相应的数据从一个视图传递到另一个视图

Question

I am stuck with how to pass data from one view to another. I have a view named " Session" which displays data from db through foreach loop in table format. Each row has a "add trainee" link. on its click it directs to another view. I need to get all the details from the row of link to get displayed on redirected view.

I dont have any clue on how to implement it neither have any sample code.

Kindly help me with this.

Answer 1

Actually there are couple of approaches to do this.

1. pass the id to new view and get the detail data from database based on this id ,then display the detail.
2. get all the details from the row by javascript and store them in sessionstorage, then get this sessionstorage in another view and display all the detail.

Answer 2

In your case, you should use query string <a href="/add-trainee?sessionid=123">Add trainee</a> Add trainee

while /add-trainee route to your TraineeController AddTrainee method

I add sample code

namespace WebApplication1.Controllers
{
    public class Session
    {
        public int SessionId { get; set; }
        public string Name { get; set; }
        public List<Trainee> Trainees { get; set; }
    }

    public class Trainee
    {
        public int TraineeId { get; set; }
        public string Name { get; set; }

    }

    public class SessionController : Controller
    {
        // GET: Session
        public ActionResult Index()
        {
            List<Session> sessions = new List<Session>();
            sessions.Add(new Session { SessionId = 1, Name = "Session 1"});
            sessions.Add(new Session { SessionId = 1, Name = "Session 2" });
            sessions.Add(new Session { SessionId = 1, Name = "Session 3" });
            return View(sessions);
        }  
    }
}


namespace WebApplication1.Controllers
{
    public class TraineeController : Controller
    {
        public ActionResult Add(int sessionid)
        {
            List<Session> sessions = new List<Session>();
            sessions.Add(new Session { SessionId = 1, Name = "Session 1" });
            sessions.Add(new Session { SessionId = 1, Name = "Session 2" });
            sessions.Add(new Session { SessionId = 1, Name = "Session 3" });
            var session = sessions.FirstOrDefault(c => c.SessionId == sessionid);
            ViewBag.session = session;
            return View();
        }


        [HttpPost]
        public ActionResult Create(FormCollection collection)
        {
            try
            {
                // TODO: Add insert logic here

                return RedirectToAction("Index");
            }
            catch
            {
                return View();
            }
        }


    }
}

Session Index (Index.cshtml)

@model IEnumerable<WebApplication1.Controllers.Session>

@{
    ViewBag.Title = "List Sessions";
}

<table>

@foreach (var item in Model) {
    <tr>
        <td>
            @Html.DisplayFor(modelItem => item.Name)
        </td>
        <td>
           <a href="/trainee/add?sessionid=@item.SessionId">Add Trainee</a>
        </td>
    </tr>
}

</table>

Add Trainee view (Add.cshtml)

@model WebApplication1.Controllers.Trainee

@{
    var session = ViewBag.session;
}

@using (Html.BeginForm()) 
{
    @Html.AntiForgeryToken()

    <div class="form-horizontal">
        <h4>Add Trainee</h4>
        <hr />

        @Html.ValidationSummary(true, "", new { @class = "text-danger" })
        <div class="form-group">
            <label class="control-label col-md-2" for="Name">Session Name</label>
            <div class="col-md-10">@session.Name</div>
        </div>
        <div class="form-group">
            @Html.LabelFor(model => model.Name, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.Name, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.Name, "", new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
            <div class="col-md-offset-2 col-md-10">
                <input type="submit" value="Create" class="btn btn-default" />
            </div>
        </div>
    </div>
}