public void OpreName()
{
var q = from x in Students
where x.Course == "opre"
select x.Name;
LinqResultConsole.DisplayResult(q);
}
public void NamePlusCourses()
{
var q = from x in Students
join y in DataBase.course on x.Course equals y.courseShortName
select new
{
StudentName = x.Name,
CourseName = y.courseLongName
};
LinqResultConsole.DisplayResult(q);
}
public void CoursesShort()
{
var q = from x in Students
group x by x.Course into g
select new
{
CourseName = g.Key,
CourseAvg = g.Average(t => t.Mark)
};
LinqResultConsole.DisplayResult(q);
}
public void CoursesLong()
{
var q = from x in Students
join y in DataBase.course on x.Course equals y.courseShortName
group x by y.courseLongName into g
select new
{
CourseName = g.Key,
CourseAvg = g.Average(t => t.Mark)
};
LinqResultConsole.DisplayResult(q);
}
