convert list string to list enum c#
public static class StringEnumerableExtensions {
    public static IEnumerable<T> StringsToEnums<T>( this IEnumerable<string> strs) where T : struct, IConvertible {
        Type t = typeof( T );
        var ret = new List<T>();
        if( t.IsEnum ) {
            T outStr;
            foreach( var str in strs ) {
                if( Enum.TryParse( str, out outStr ) ) {
                    ret.Add( outStr );
                }
            }
        }
        return ret;
    }
}
