System.Data.ProviderBase.FieldNameLookup.GenerateLookup C# (CSharp) Method

        private void GenerateLookup()
        {
            int length = _fieldNames.Length;
            Hashtable hash = new Hashtable(length);

            // via case sensitive search, first match with lowest ordinal matches
            for (int i = length - 1; 0 <= i; --i)
            {
                string fieldName = _fieldNames[i];
                hash[fieldName] = i;
            }
            _fieldNameLookup = hash;
        }
    }