C# enum members at runtime

[Ken Allen]

I have a need to convert the names of the members of an enumeration into an
array of strings at runtime.

I have determined a method using reflection.

Type theType = typeof(MyEnumNa me);
MemberInfo[] theMembers = theType.getMemb ers();

foreach (MemberInfo entry in theMembers)
{
if ((entry.MemberT ype.ToString() == "Field") && (entry.Name !=
"value__))
{
// add this entry.Name to the list
}
}

Unfortunately this method means that I do not know how many members there
are in the enumeration until I have scanned the entire MemberInfo array.

Is there a simpler or more direct method for achieving this?

-ken

[Jon Skeet [C# MVP]]

Ken Allen <no************ @sympatico.ca> wrote:

I have a need to convert the names of the members of an enumeration
into an array of strings at runtime.

I have determined a method using reflection.

Type theType = typeof(MyEnumNa me);
MemberInfo[] theMembers = theType.getMemb ers();

foreach (MemberInfo entry in theMembers)
{
if ((entry.MemberT ype.ToString() == "Field") && (entry.Name !=
"value__))
{
// add this entry.Name to the list
}
}

Unfortunately this method means that I do not know how many members
there are in the enumeration until I have scanned the entire
MemberInfo array.

Is there a simpler or more direct method for achieving this?

Yup -

string[] names = Enum.GetNames(t ypeof(MyEnumNam e));

--
Jon Skeet - <sk***@pobox.co m>
http://www.pobox.com/~skeet
If replying to the group, please do not mail me too

[Ken Allen]

Cool.

Now, since this is a 'falg' (or bit field) enum, how can I get the value for
each of the names at the same time?

-ken

"Jon Skeet [C# MVP]" <sk***@pobox.co m> wrote in message
news:MP******** *************** *@msnews.micros oft.com...

Ken Allen <no************ @sympatico.ca> wrote:

I have a need to convert the names of the members of an enumeration
into an array of strings at runtime.

I have determined a method using reflection.

Type theType = typeof(MyEnumNa me);
MemberInfo[] theMembers = theType.getMemb ers();

foreach (MemberInfo entry in theMembers)
{
if ((entry.MemberT ype.ToString() == "Field") && (entry.Name != "value__))
{
// add this entry.Name to the list
}
}

Unfortunately this method means that I do not know how many members
there are in the enumeration until I have scanned the entire
MemberInfo array.

Is there a simpler or more direct method for achieving this?

Yup -

string[] names = Enum.GetNames(t ypeof(MyEnumNam e));

--
Jon Skeet - <sk***@pobox.co m>
http://www.pobox.com/~skeet
If replying to the group, please do not mail me too

[Jon Skeet [C# MVP]]

Ken Allen <no************ @sympatico.ca> wrote:

Now, since this is a 'falg' (or bit field) enum, how can I get the value for
each of the names at the same time?

Well, there's Enum.GetValues as well, but I don't think there's any
guarantee that the order will be the same...

--
Jon Skeet - <sk***@pobox.co m>
http://www.pobox.com/~skeet
If replying to the group, please do not mail me too

[Brian R.]

I was useing reflection to acheive the same results. I wanted to make the
values of an enumeration dynamically available to a user in a list box. In
order to do it I performed the following steps:

Type tEnum = typeof(DRW.Draw ing2D.Interpola tionMode);
Array aVals = Enum.GetValues( tEnum);

foreach(DRW.Dra wing2D.Interpol ationMode im in aVals)
{
String strName = im.ToString();
}

This worked for me.

"Jon Skeet [C# MVP]" wrote:

Ken Allen <no************ @sympatico.ca> wrote:

Now, since this is a 'falg' (or bit field) enum, how can I get the value for
each of the names at the same time?

Well, there's Enum.GetValues as well, but I don't think there's any
guarantee that the order will be the same...

--
Jon Skeet - <sk***@pobox.co m>
http://www.pobox.com/~skeet
If replying to the group, please do not mail me too

[Stoitcho Goutsev \(100\) [C# MVP]]

Hi Brian,

Instead of getting all valies and convert them to strings you can use
Enum.GetNames method

--

Stoitcho Goutsev (100) [C# MVP]
"Brian R." <8B************ *@noemail.nospa m> wrote in message
news:BD******** *************** ***********@mic rosoft.com...

I was useing reflection to acheive the same results. I wanted to make the
values of an enumeration dynamically available to a user in a list box.
In
order to do it I performed the following steps:

Type tEnum = typeof(DRW.Draw ing2D.Interpola tionMode);
Array aVals = Enum.GetValues( tEnum);

foreach(DRW.Dra wing2D.Interpol ationMode im in aVals)
{
String strName = im.ToString();
}

This worked for me.

"Jon Skeet [C# MVP]" wrote:

Ken Allen <no************ @sympatico.ca> wrote:

> Now, since this is a 'falg' (or bit field) enum, how can I get the
> value for
> each of the names at the same time?

Well, there's Enum.GetValues as well, but I don't think there's any
guarantee that the order will be the same...

--
Jon Skeet - <sk***@pobox.co m>
http://www.pobox.com/~skeet
If replying to the group, please do not mail me too