Try
int value =
(int)Enum.Parse(Type.GetType("Company.Product.Options"),"Two");
Don
-----Original Message-----
From: Discussion of advanced .NET topics.
[mailto:[EMAIL PROTECTED] On Behalf Of Fernando Tubio
Sent: Friday, July 14, 2006 8:44 AM
To: ADVANCED-DOTNET@DISCUSS.DEVELOP.COM
Subject: [ADVANCED-DOTNET] Convert string enum constant to the
underlying value
Is there anything in the .NET framework to convert a string
representation
of an enum constant to it's value?
For example, given the following enum
namespace Company.Product
{
public enum Options
{
One = 1,
Two = 2,
Three = 3
}
}
Is there any method that when given the string
"Company.Product.Options.Two"
as input will return the value 2 as output? Enum.Parse doesn't exactly
qualify as it requires knowing the enum's type in advance. Well, it
could be
used if the type is first extracted from the string and searched for in
the
loaded assemblies. For example,
int ConvertEnumToInt32 ( string expression )
{
int index = expression.LastIndexOf( '.' );
if ( index > 0 )
{
Type type = null;
string typeName = expression.Substring( 0, index );
foreach ( Assembly assembly in
AppDomain.CurrentDomain.GetAssemblies( ))
{
type = assembly.GetType( typeName );
if ( type != null )
{
return ( int ) Enum.Parse(
type, expression.Substring( index + 1 ) );
}
}
}
throw new ArgumentOutOfRangeException( "expression", expression );
}
The preceding code works but I wonder if there is a more direct route.
For
instance, is enumerating the loaded assemblies and calling GetType on
each
an appropiate mechanism to search for the enum's type? Also, I suppose
the
code would fail if the enum is defined in a referenced assembly which
hasn't
been loaded yet. Are there any alternatives? Does parsing the name of
the
enum's type and the constant's name by splitting the string at the last
'.'
character cover every possible case?
Fernando Tubio
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