public static void Demo2()
{
var methodFormat = GroupByStudent.GetStudents()
.GroupBy(std => std.Gender)
.OrderByDescending(g => g.Key)
.Select(std => new
{
Key = std.Key,
Students = std.OrderBy(s => s.Name)
});
var queryFormat = from std in GroupByStudent.GetStudents()
group std by std.Gender into genderGroup
orderby genderGroup.Key descending
select new
{
Key = genderGroup.Key,
Students = genderGroup.OrderBy(s => s.Name)
};
foreach (var group in methodFormat)
{
Console.WriteLine(group.Key + " : " + group.Students.Count());
//Iterate through each student of a group
foreach (var student in group.Students)
{
Console.WriteLine(" Name :" + student.Name + ", Age: " + student.Age + ", Branch :" + student.Barnch);
}
}
}
public static void Demo1()
{
var methodFormat = GroupByStudent.GetStudents()
.GroupBy(std => new { std.Barnch, std.Gender })
.OrderByDescending(g => g.Key.Barnch)
.ThenBy(g => g.Key.Gender)
.Select(stdGroup => new
{
Branch = stdGroup.Key.Barnch,
Gender = stdGroup.Key.Gender,
Students = stdGroup.OrderBy(x => x.Name)
});
var queryFormat = from std in GroupByStudent.GetStudents()
group std by new { std.Barnch, std.Gender } into stdGroup
select new
{
Branch = stdGroup.Key.Barnch,
Gender = stdGroup.Key.Gender,
Students = stdGroup.OrderBy(x => x.Name)
};
foreach (var group in methodFormat)
{
Console.WriteLine($"Barnch : {group.Branch} Gender: {group.Gender} No of Students = {group.Students.Count()}");
//It will iterate through each item of a group
foreach (var student in group.Students)
{
Console.WriteLine($" ID: {student.ID}, Name: {student.Name}, Age: {student.Age} ");
}
Console.WriteLine();
}
}
public static void Demo1()
{
var methodFormat = GroupByStudent.GetStudents().ToLookup(s => s.Barnch);
var queryFormat = (from std in GroupByStudent.GetStudents()
select std).ToLookup(s => s.Barnch);
foreach (var group in methodFormat)
{
Console.WriteLine(group.Key + " : " + group.Count());
//Iterate through each student of a group
foreach (var student in group)
{
Console.WriteLine(" Name :" + student.Name + ", Age: " + student.Age + ", Gender :" + student.Gender);
}
}
}
