public void MapFields(string[] fields)
            {
                if (fields == null || fields.Length == 0)
                {
                    ResetMap();
                }
                else
                {
                    indexMaps = new int[fields.Length];
                    names     = fields;

                    // 对照
                    for (int i = 0; i < fields.Length; i++)
                    {
                        if (KeyField.Equals(fields[i]))
                        {
                            indexMaps[i] = 0;
                        }
                        else if (ValueField.Equals(fields[i]))
                        {
                            indexMaps[i] = 1;
                        }
                        else
                        {
                            indexMaps[i] = -1;
                        }
                    }
                }
            }
            public object GetValueByOriName(string field)
            {
                if (curRow >= 0 && curRow < keys.Length)
                {
                    if (ValueField.Equals(field))
                    {
                        return(values[curRow]);
                    }
                    else if (KeyField.Equals(field))
                    {
                        return(keys[curRow]);
                    }
                }

                return(DBNull.Value);
            }