private void Button_Click(object sender, RoutedEventArgs e)
        {
            var Username = new SqlParameter("@username", (username.Text));
            var Password = new SqlParameter("@password", (password.Text));

            var result = context.Database.SqlQuery <string>(" exec pLogin @username, @password ", Username, Password).FirstOrDefault();


            if (string.Compare(result, "Manager") == 0)
            {
                var query =
                    (from I in context.Instructors
                     from U in context.Users
                     where I.UserID == U.ID
                     where U.Name == username.Text && U.Password == password.Text
                     select I.ID).FirstOrDefault();
                ManagerWindow managerWindow = new ManagerWindow(query);
                managerWindow.Show();
                this.Close();
            }
            else if (string.Compare(result, "Instructor") == 0)
            {
                var query =
                    (from I in context.Instructors
                     from U in context.Users
                     where I.UserID == U.ID
                     where U.Name == username.Text && U.Password == password.Text
                     select I.ID).FirstOrDefault();
                InstructorWin homeWindow = new InstructorWin(query);
                homeWindow.Show();
                this.Close();
            }
            else if (string.Compare(result, "Student") == 0)
            {
                var query =
                    (from I in context.Students
                     from U in context.Users
                     where I.UserID == U.ID
                     where U.Name == username.Text && U.Password == password.Text
                     select I.ID).FirstOrDefault();
                StudentWindow studentWindow = new StudentWindow(query);
                studentWindow.Show();
            }
            else
            {
                MessageWindow message = new MessageWindow("Not Valid User");
                message.Show();
            }
        }
Exemple #2
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        private void Button_Click(object sender, RoutedEventArgs e)
        {
            InstructorWin instructorWin = new InstructorWin(INStructorId);

            instructorWin.Show();
        }