Question

New to programming, I am tring to get the value of one cell from a table using c# in asp.net MVC; here what I am trying:

 DALEntities db = new DALEntities();
  var duration = db.MyTable.Where(c => c.Day == date && c.ID == id).Select(c => c.Duration);
            Session["duration"] = duration;

to get the data to a view I use, in the controller:
var temp = Session[“duration”];
ViewBag.Duration = temp;

and in the view:

 @ViewBag.Duration

I get

System.Data.Objects.ObjectQuery`1[System.String]

I would appreciate your suggestions.

Answer 1

You could call a .First() at the end to eagerly execute the query and get the single result matching this criteria:

var duration = db
    .MyTable
    .Where(c => c.Day == date && c.ID == id)
    .Select(c => c.Duration)
    .First();

Be careful though because if there are no records matching your .Where() clause, the .First() extension method will throw an exception. In this case you might consider using the .FirstOrDefault() method.

I also very strongly recommend you to learn basic LINQ before learning Entity Framework and mostly before learning ASP.NET MVC. Otherwise you will be struggling a lot with ASP.NET MVC. I also recommend to people learning separate frameworks in isolation without mixing them. Once you are familiar with them you could mix in one project.