protected void SRegistrat(object sender, EventArgs e)
        {
            using (var db = new AssignmentManagerEntities5())
            {
                if (db.Users.Where(i => i.Email == sEmail.Text || i.Id == sId.Text).Any())
                {
                    userExistsMessage.Visible = true;
                }
                else
                {
                    /*User newUser = new User
                     * {
                     *  Id = sId.Text,
                     *  Name = sName.Text,
                     *  Surname = sSurname.Text,
                     *  Passward = sPassward1.Text,
                     *  Email = sEmail.Text
                     *
                     * };
                     * db.Users.Add(newUser);
                     * db.SaveChangesAsync();*/
                    string     dat = "INSERT INTO [User](Id,Passward,Email,Name,Surname) VALUES('" + sId.Text + "','" + sPassward1.Text + "','" + sEmail.Text + "','" + sName.Text + "','" + sSurname.Text + "')";
                    SqlCommand com = new SqlCommand(dat, con);
                    con.Open();
                    com.ExecuteNonQuery();
                    con.Close();

                    Response.Redirect("Login.aspx");
                }
            }
        }
 private void FillGrid()
 {
     using (var bd = new AssignmentManagerEntities5())
     {
         string         dat = "SELECT(CurseName,AssignmentName,Grade,Date,Status)  FROM[User] WHERE(Id='" + Session["id"].ToString() + "')";
         SqlDataAdapter da;
         SqlCommand     com = new SqlCommand(dat, con);
         DataTable      dt  = new DataTable();
         con.Open();
         com.ExecuteNonQuery();
         da = new SqlDataAdapter(com);
         da.Fill(dt);
         con.Close();
         Assignmants.DataSource = dt;
         Assignmants.DataBind();
     }
 }
 protected void Login_click_student(object sender, EventArgs e)
 {
     using (var db = new AssignmentManagerEntities5())
     {
         var user = db.Users.Where(i => i.Email == sEmail.Text && i.Passward == sPassward.Text).FirstOrDefault();
         if (user == null)
         {
             sEmail.Text = "f";
         }
         else
         {
             Session["email"]   = user.Email;
             Session["id"]      = user.Id;
             Session["name"]    = user.Name;
             Session["surname"] = user.Surname;
             Response.Redirect("studantScreen.aspx");
         }
     }
 }