Deserialize json response and write to database

Quote:

foreach statement cannot operate on variables of type RootObject because RootObject does not contain a public definition for GetEnumerator

public class RootObject
{
    public string Id { get; set; }
    public string Code { get; set; }
    public string Description { get; set; }
}	
	
                string cities;

                cities = getCities();

                JavaScriptSerializer oJS = new JavaScriptSerializer();
                RootObject oRootObject = new RootObject();
                oRootObject = oJS.Deserialize<RootObject>(cities);

                string connectionString = @"Data Source=server\SQLEXPRESS;Initial Catalog=TestDB;Integrated Security=SSPI;";							
                string sqlTable = "test";

            foreach (var city in oRootObject) //foreach statement cannot operate on variables of type RootObject because RootObject does not contain a public definition for GetEnumerator
			{
				using (SqlConnection sc = new SqlConnection(connectionString))
                {
                    sc.Open();
                    using (SqlBulkCopy sbc = new SqlBulkCopy(sc))
                    {
                        sbc.DestinationTableName = sqlTable;
                        sbc.BatchSize = dt.Rows.Count;
                        sbc.BulkCopyTimeout = 0;
                        sbc.ColumnMappings.Add("Id", "Id");
                        sbc.ColumnMappings.Add("Code", "Code");
                        sbc.ColumnMappings.Add("Description", "Description");

                        sbc.WriteToServer(dt);
                    }
                }	
			}

[
{
    "Id": "1",
    "Code": "Man",
    "Description": "Manchester"
},
{
    "Id": "2",
    "Code": "Lon",
    "Description": "London"
}
]