enum crazy ???

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class MinhHoaC3
{
enum NhietDoNuoc
{
DoDong = 0,
DoNguoi = 20,
DoAm = 40,
DoNong = 60,
DoSoi = 100,
}
static void Main()
{
System.Console.WriteLine(NhietDoNuoc.DoDong);
System.Console.WriteLine(NhietDoNuoc.DoNguoi);
System.Console.WriteLine(NhietDoNuoc.DoAm);
System.Console.WriteLine(NhietDoNuoc.DoNong);
System.Console.WriteLine(NhietDoNuoc.DoSoi);
Console.Read();
}
}

Out:

DoDong
DoNguoi
DoAm
DoNong
DoSoi

X| X| X| X|
Don`t out:

0
20
40
60
100

:confused::confused::confused:

Posted 4-Jan-10 22:36pm

ChiCongForco

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CPallini · Accepted Answer · 2010-01-04T23:14:00

in C# language the enum is a class (see documentation[^]), in your code

System.Console.WriteLine(NhietDoNuoc.DoDong);
System.Console.WriteLine(NhietDoNuoc.DoNguoi);
System.Console.WriteLine(NhietDoNuoc.DoAm);
System.Console.WriteLine(NhietDoNuoc.DoNong);
System.Console.WriteLine(NhietDoNuoc.DoSoi);

the method toString() (see [^]) is implicitely called (incidentally this is a very useful feature of C# enums).
See (documentation, again) [^] for proper usage of enums.

:)

J4amieC · Accepted Answer · 2010-01-04T23:15:00

Nothing crazy here... the default behaviour of Console.WriteLine when it receives an object is to call that object's ToString.

An Enum's ToString returns the string representation of the enum field, which is exactly what you see.

Interestingly for you, an enum can be explicitly cast to an integer to get the value behind each field:

class MinhHoaC3
{
enum NhietDoNuoc
{
DoDong = 0,
DoNguoi = 20,
DoAm = 40,
DoNong = 60,
DoSoi = 100,
}
static void Main()
{
System.Console.WriteLine((int)NhietDoNuoc.DoDong);
System.Console.WriteLine((int)NhietDoNuoc.DoNguoi);
System.Console.WriteLine((int)NhietDoNuoc.DoAm);
System.Console.WriteLine((int)NhietDoNuoc.DoNong);
System.Console.WriteLine((int)NhietDoNuoc.DoSoi);
Console.Read();
}
}

enum crazy ???

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