判断Access里是否存在表

  OleDbConnection conn = DbHelper.CreateConnection() as OleDbConnection;            conn.Open();            DataTable schemaTable = conn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, new object[] { null, null, null, "TABLE" });            conn.Close();            bool isExistsTable = false;            foreach (DataRow row in schemaTable.Rows)            {                if (row[2].ToString().Equals(tableName))                {                    isExistsTable = true;                    break;                }            }