how to read the last inserted field with linq

Question

I've added some values into my tbl_class using

static DataClassesDataContext db = new DataClassesDataContext();
static tbl_Class _Class = new tbl_Class();

and in my add button:

_Class.ClassName = txtClass.Text;
_Class.Capacity = System.Convert.ToByte(txtCapacity.Text);
_Class.Place = txtPlace.Text;
_Class.TeacherName = txtTeacherName.Text;
_Class.Registered = 0;
_Class.ClassComments = txtDesc.Text;
db.tbl_Classes.InsertOnSubmit(_Class);
db.SubmitChanges();

now I need this last inserted row's id for next step. how do I retrieve it?
I used this code:

var query = (db.tbl_Classes
    .OrderByDescending(m => m.classID).Take(1)).ToArray();

to get the last ID but I don't know how to put this id in my int variable. any help would be great.

Answer 1

保存后，请尝试以下操作：

var classID = _Class.classID;