Convert collections of enums to collection of strings and vice versa

Posted by Michael Freidgeim on Geeks with Blogs See other posts from Geeks with Blogs or by Michael Freidgeim
Published on Sat, 07 Jul 2012 10:10:11 GMT Indexed on 2012/07/10 15:17 UTC
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Recently I needed to convert collections of  strings, that represent enum names, to collection of enums, and opposite,  to convert collections of   enums  to collection of  
strings. I didn’t find standard LINQ extensions.
However, in our big collection of helper extensions I found what I needed - just with different names:
/// <summary>
/// Safe conversion, ignore any unexpected strings
/// Consider to name as Convert extension
/// </summary>
/// <typeparam name="EnumType"></typeparam>
/// <param name="stringsList"></param>
/// <returns></returns>
public static List<EnumType> StringsListAsEnumList<EnumType>(this List<string> stringsList) where EnumType : struct, IComparable, IConvertible, IFormattable
    {
List<EnumType> enumsList = new List<EnumType>();
foreach (string sProvider in stringsList)
    {
    EnumType provider;
    if (EnumHelper.TryParse<EnumType>(sProvider, out provider))
    {
    enumsList.Add(provider);
    }
    }
    return enumsList;
    }


/// <summary>
/// Convert each element of collection to string
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="objects"></param>
/// <returns></returns>
public static IEnumerable<string> ToStrings<T>(this IEnumerable<T> objects)
{//from http://www.c-sharpcorner.com/Blogs/997/using-linq-to-convert-an-array-from-one-type-to-another.aspx
return objects.Select(en => en.ToString());
}

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