private void crudStudentOperations(CollegeService collegeService)
{
Console.WriteLine("Enter 1 to create Student");
Console.WriteLine("enter 2 to update student");
Console.WriteLine("Enter 3 to delete student");
int choice;
if (int.TryParse(Console.ReadLine(), out choice))
{
switch (choice)
{
case 1:
Console.WriteLine("Enter details of student");
Console.WriteLine("Enter Id");
Student student = new Student();
Console.WriteLine("Enter Id");
student.Id = int.TryParse(Console.ReadLine(), out int id)?id:0;
Console.WriteLine("Enter NAme");
string name = Console.ReadLine();
student.Name = name != ""?name:null;
Console.WriteLine("Enter department Id");
student.Department = int.TryParse(Console.ReadLine(), out int dept)? dept:0;
collegeService.CreateStudent(student);
break;
case 2:
Console.WriteLine("Enter details of student");
Console.WriteLine("Enter Id");
Student student1 = new Student();
Console.WriteLine("Enter Id");
student1.Id = int.TryParse(Console.ReadLine(), out id) ? id : 0;
Console.WriteLine("Enter NAme");
name = Console.ReadLine();
student1.Name = name != "" ? name : null;
Console.WriteLine("Enter department Id");
student1.Department = int.TryParse(Console.ReadLine(), out dept) ? dept : 0;
collegeService.updateStudent(student1);
break;
case 3:
Console.WriteLine("Enter ID to delete");
int Id = int.TryParse(Console.ReadLine(), out id) ? id : 0;
collegeService.deleteStudent(Id);
break;
}
}
}
private void crudDepartmentOperations(CollegeService collegeService)
{
Console.WriteLine("Enter 1 to create Department");
Console.WriteLine("enter 2 to update Department");
Console.WriteLine("Enter 3 to delete Department");
int choice;
if (int.TryParse(Console.ReadLine(), out choice))
{
switch (choice)
{
case 1:
Console.WriteLine("Enter details of Department");
Console.WriteLine("Enter Dept Id");
Department department = new Department();
Console.WriteLine("Enter Id");
department.Dept_Id = int.TryParse(Console.ReadLine(), out int id)?id:0;
Console.WriteLine("Enter Department");
string name = Console.ReadLine();
department.Department_Name = name != ""?name:null;
collegeService.createDepartment(department);
break;
case 2:
Console.WriteLine("Enter details of Department");
Console.WriteLine("Enter Dept Id");
Department department1 = new Department();
Console.WriteLine("Enter Id");
department1.Dept_Id = int.TryParse(Console.ReadLine(), out id) ? id : 0;
Console.WriteLine("Enter Department");
name = Console.ReadLine();
department1.Department_Name = name != "" ? name : null;
collegeService.updateDepartment(department1);
break;
case 3:
Console.WriteLine("Enter ID to delete");
int Id = int.TryParse(Console.ReadLine(), out id) ? id : 0;
collegeService.deleteDepartment(Id);
break;
}
}
}
private void StartApp(int choice)
{
CollegeService collegeService = new CollegeService(allDepartments, allStudent, studentAndDepartment, crudStudent, crudDepartment);
Console.WriteLine("Count of all student");
Console.WriteLine(collegeService.CountStudents());
Console.WriteLine("Count of all departments");
Console.WriteLine(collegeService.CountDepartments());
switch (choice)
{
case 1:
foreach (Student student in collegeService.DisplayAllStudent())
{
Console.WriteLine(student);
}
break;
case 2:
Console.WriteLine("Enter Id to be fetched");
int id;
if (int.TryParse(Console.ReadLine(), out id))
{
Console.WriteLine(allStudent.GetStudentById(id));
}
else
{
Console.WriteLine("Enter Proper Id");
}
break;
case 3:
foreach (Department department in allDepartments.DisplayAllDepartment())
{
Console.WriteLine(department);
}
break;
case 4:
Console.WriteLine("Enter Department Id to be fetched");
int Dept_id;
if (int.TryParse(Console.ReadLine(), out Dept_id))
{
foreach (JoinedStudentDepartments student in studentAndDepartment.GetStudentsByDepartment(Dept_id))
{
Console.WriteLine(student);
}
}
else
{
Console.WriteLine("Enter Proper Id");
}
break;
case 5:
foreach (var obj in collegeService.GetStudentsByDepartment())
{
Console.WriteLine("Students of {0} Department", obj.Key);
foreach (Student student in obj)
{
Console.WriteLine(" " + student);
}
}
break;
case 6:
Console.WriteLine("Enter Department Id to be fetched");
if (int.TryParse(Console.ReadLine(), out id))
{
Console.WriteLine(collegeService.DisplayDepartmentById(id));
}
else
{
Console.WriteLine("Enter Proper Id");
}
break;
case 7:
crudStudentOperations(collegeService);
break;
case 8:
crudDepartmentOperations(collegeService);
break;
}
}