C adalah huruf ketiga dalam alfabet Latin. Dalam bahasa Indonesia, huruf ini disebut ce (dibaca [tʃe]).
Meskipun C dibuat untuk memprogram sistem dan jaringan komputer namun bahasa ini juga sering digunakan dalam mengembangkan software aplikasi. C juga banyak dipakai oleh berbagai jenis platform sistem operasi dan arsitektur komputer, bahkan terdapat beberepa compiler yang sangat populer telah tersedia.
Bahasa C atau dibaca “si” adalah bahasa pemrograman tingkat tinggi dan general-purpose yang digunakan dalam sehari-hari. Maksud dari general-purpose adalah bisa digunakan untuk membuat program apa saja.
Bahasa pemrograman C ini dikembangkan antara tahun 1969 – 1972 oleh Dennis Ritchie. Yang kemudian dipakai untuk menulis ulang sistem operasi UNIX. Selain untuk mengembangkan UNIX, bahasa C juga dirilis sebagai bahasa pemrograman umum.
Array values = Enum.GetValues(typeof(myEnum));
foreach( MyEnum val in values )
{
Console.WriteLine (String.Format("{0}: {1}", Enum.GetName(typeof(MyEnum), val), val));
}
Or, you can cast the System.Array that is returned:
string[] names = Enum.GetNames(typeof(MyEnum));
MyEnum[] values = (MyEnum[])Enum.GetValues(typeof(MyEnum));
for( int i = 0; i < names.Length; i++ )
{
print(names[i], values[i]);
}
But, can you be sure that GetValues returns the values in the same order as GetNames returns the names ?
You need to cast the array - the returned array is actually of the requested type, i.e. myEnum[]
if you ask for typeof(myEnum)
:
myEnum[] values = (myEnum[]) Enum.GetValues(typeof(myEnum));
Then values[0]
etc
You can cast that Array to different types of Arrays:
myEnum[] values = (myEnum[])Enum.GetValues(typeof(myEnum));
or if you want the integer values:
int[] values = (int[])Enum.GetValues(typeof(myEnum));
You can iterate those casted arrays of course :)
How about a dictionary list?
Dictionary<string, int> list = new Dictionary<string, int>();
foreach( var item in Enum.GetNames(typeof(MyEnum)) )
{
list.Add(item, (int)Enum.Parse(typeof(MyEnum), item));
}
and of course you can change the dictionary value type to whatever your enum values are.
Here is another. We had a need to provide friendly names for our EnumValues. We used the System.ComponentModel.DescriptionAttribute to show a custom string value for each enum value.
public static class StaticClass
{
public static string GetEnumDescription(Enum currentEnum)
{
string description = String.Empty;
DescriptionAttribute da;
FieldInfo fi = currentEnum.GetType().
GetField(currentEnum.ToString());
da = (DescriptionAttribute)Attribute.GetCustomAttribute(fi,
typeof(DescriptionAttribute));
if (da != null)
description = da.Description;
else
description = currentEnum.ToString();
return description;
}
public static List<string> GetEnumFormattedNames<TEnum>()
{
var enumType = typeof(TEnum);
if (enumType == typeof(Enum))
throw new ArgumentException("typeof(TEnum) == System.Enum", "TEnum");
if (!(enumType.IsEnum))
throw new ArgumentException(String.Format("typeof({0}).IsEnum == false", enumType), "TEnum");
List<string> formattedNames = new List<string>();
var list = Enum.GetValues(enumType).OfType<TEnum>().ToList<TEnum>();
foreach (TEnum item in list)
{
formattedNames.Add(GetEnumDescription(item as Enum));
}
return formattedNames;
}
}
In Use
public enum TestEnum
{
[Description("Something 1")]
Dr = 0,
[Description("Something 2")]
Mr = 1
}
static void Main(string[] args)
{
var vals = StaticClass.GetEnumFormattedNames<TestEnum>();
}
This will end returning "Something 1", "Something 2"
Another solution, with interesting possibilities:
enum Days { Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday }
static class Helpers
{
public static IEnumerable<Days> AllDays(Days First)
{
if (First == Days.Monday)
{
yield return Days.Monday;
yield return Days.Tuesday;
yield return Days.Wednesday;
yield return Days.Thursday;
yield return Days.Friday;
yield return Days.Saturday;
yield return Days.Sunday;
}
if (First == Days.Saturday)
{
yield return Days.Saturday;
yield return Days.Sunday;
yield return Days.Monday;
yield return Days.Tuesday;
yield return Days.Wednesday;
yield return Days.Thursday;
yield return Days.Friday;
}
}
What about using a foreach loop, maybe you could work with that?
int i = 0;
foreach (var o in values)
{
print(names[i], o);
i++;
}
something like that perhaps?
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