Accelerated C# 2008

LastName = "Smails", FirstName = "Spaulding",

Nationality = "Irish"

},

new Employee {

LastName = "Ivanov", FirstName = "Ivan",

Nationality = "Russian"

}

};

var query = from emp in employees

group emp by new {

Nationality = emp.Nationality,

LastName = emp.LastName

};

foreach( var group in query ) {

Console.WriteLine( group.Key );

foreach( var employee in group ) {

Console.WriteLine( employee.FirstName );

}

Console.WriteLine();

}

}

}

Notice the anonymous type within the group clause. What this says is that I want to partition

the input collection into groups where both the Nationality and LastName are the same. In this

example, every group ends up having one entity except one, and it’s the one where Nationality is

Russian and LastName is Ivanov. Essentially how it works ...