public static void ShowTrainersInCourse()
{
Console.Clear();
CourseDb cDb = new CourseDb();
TrainersPerCourseDb tpcDb = new TrainersPerCourseDb();
List <Course> courses = cDb.GetCourses();
if (courses.Count != 0)
{
Console.WriteLine("Please select a course by using its number on the list: \n");
ShowList(courses, "Courses");
bool result = Int32.TryParse(Console.ReadLine(), out int courseID);
while (!result || (courseID < 1 || courseID > courses.Count))
{
Console.Write($"Wrong input! Please select using numbers from 1 to {courses.Count} ");
result = Int32.TryParse(Console.ReadLine(), out courseID);
}
Console.Clear();
List <Trainer> trainersPerCourse = tpcDb.GetTrainersPerCourse(courseID);
ShowList(trainersPerCourse, $"Trainers Per This Course");
}
else
{
Console.WriteLine("There are no trainers or courses yet");
}
}