Get all integer values from an enumeration

Question

2.00/5 (2 votes)

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Consider i have enumerator like this :

C#

enum ProgramDeclaration
 {
     program=1,
     identifier=2,
     leftcurly=3
 };

and to get all values via foreach i use this code :

C#

foreach (ProgramDeclaration val in Enum.GetValues(typeof(ProgramDeclaration)))
{
    MessageBox.Show(val.ToString());
}

Problem : above code only give me output :
program
identifier
leftcurly

Question : how to get the integer value 1, 2 and 3? i want to show it in messagebox?

What I have tried:

looking for any sample on MSDN but i got nothing..

Posted 4-Jun-16 2:23am

Gun Gun Febrianza

Updated 4-Jun-16 3:51am

v2

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Dave Kreskowiak 4-Jun-16 8:45am

Just to clairfy and keep future questions from being confusing, that's an "enumeration", not an "enumerator".

An enumerator iterates over the items in a collection, returning each item, one by one.

Philippe Mori 4-Jun-16 8:52am

Are you serious? You simply have to press F1 in Visual Studio and scroll down in the online help to have a sample that show you one way to do this.

Gun Gun Febrianza 4-Jun-16 8:59am

@mori
yes i am wrong, i did not read in details. just quick reading. sorry,

@dave
thanks for correct my question title. :)

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OriginalGriff · Accepted Answer · 2016-06-04T02:33:00

Solution 1

Try:

C#

foreach (ProgramDeclaration val in Enum.GetValues(typeof(ProgramDeclaration)))
{
    Console.WriteLine("Value : {0} and Integer Value : {1}", val, (int) val);    
}

Posted 4-Jun-16 2:33am

OriginalGriff

Updated 4-Jun-16 21:22pm

v2

Comments

Gun Gun Febrianza 4-Jun-16 8:57am

thx brother :D you are really codeproject angelkeeper (y)

OriginalGriff 4-Jun-16 9:20am

Nah! I tried, but they keep escaping between the bars! :laugh:
You're welcome!

Gun Gun Febrianza 5-Jun-16 3:24am

:laugh: :D

Philippe Mori · Accepted Answer · 2016-06-04T02:51:00

For sure, you won't get an int if val is declared as an enumeration and there is an item in the enumeration for that value.

If you want integer values, then get integer value! This is as simple as that!

C#

foreach (int val in Enum.GetValues(typeof(ProgramDeclaration)))
{
    MessageBox.Show(val.ToString());
}

By the way, this is well documented with samples in the documentation:
Enum.GetValues Method (Type) (System)[^]

And it would even take less time to do F1 in Visual Studio to get online help that it take to write a question like this one.

Sergey Alexandrovich Kryukov · Accepted Answer · 2016-06-04T03:51:00

Please see my article with comprehensive analysis of enumeration types based on reflection: Enumeration Types do not Enumerate! Working around .NET and Language Limitations.

The simpler method based on GetValues does work, but there are problems you face when you define different enumeration members with identical underlying integer values. Such cases are very important in practice. My article, among other things, explains this situation in detail and provides a method independent of the assigned values.

—SA

Get all integer values from an enumeration

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