private void UpdateMapperDataSourceFields(string tableName, ICollection <ListMappingField> mapFields, string key)
        {
            var fields = _configService.TablesFields(tableName);

            ColumnsMapperRep.DataSource = fields.Where(item =>
                                                       !String.Equals(item, key, StringComparison.InvariantCultureIgnoreCase)).Select(item => new
            {
                DbColumnName     = item,
                DbColumnId       = item,
                ShPColumnIntName = mapFields == null ? "" :
                                   mapFields.Where(f => f.FieldName == item).Select(f => f.ItemName).FirstOrDefault()
            });
            ColumnsMapperRep.DataBind();
        }