public string NewStudent(StudentSummary studentSummary)
{
if (Summaries.Count > 0)
{
studentSummary.ID = Summaries.Max(x => x.ID) + StudentConsts.IDStep;
}
else
{
studentSummary.ID = StudentConsts.IDStep;
}
Add(studentSummary);
WriteSummariesToFile();
return(StudentConsts.ResultOK);
}
public string StudentOut(StudentSummary DeleteSummary)
{
StudentSummary CurrentSummary = GetStudentSummaryByID(DeleteSummary.ID);
if (CurrentSummary != null)
{
Delete(CurrentSummary);
WriteSummariesToFile();
return(StudentConsts.ResultOK);
}
else
{
return(StudentConsts.NotFound);
}
}
public string ChangeStudentInfo(StudentSummary NewSummary)
{
StudentSummary CurrentSummary = GetStudentSummaryByID(NewSummary.ID);
if (CurrentSummary != null)
{
Update(NewSummary);
WriteSummariesToFile();
return(StudentConsts.ResultOK);
}
else
{
return(StudentConsts.NotFound);
}
}
public StudentSummary StudentInfo(int ID)
{
StudentSummary CurrentSummary = GetStudentSummaryByID(ID);
return(CurrentSummary);
}