/* Public Methods */
 public void save()
 {
     DBHelper dbhelper = new DBHelper();
     string insertstr = buildStringForInsert();
     dbhelper.ExecuteNonQuery(insertstr);
     dbhelper.close();
 }
 private void OK_Click_1(object sender, EventArgs e)
 {
     DBHelper dbhelper = new DBHelper();
     string string1 = "insert into UserRole(UserRole) values('" + UserRole.Text + "')";
     dbhelper.ExecuteNonQuery(string1);
     dbhelper.close();
     this.Close();
 }
 /* Public Methods */
 public void save()
 {
     // Create DBHelper's Instance
     DBHelper dbhelper = new DBHelper();
     // Get insert string
     string insertstr = buildStringForInsert();
     // Insert into DB
     dbhelper.ExecuteNonQuery(insertstr);
     // Close DB Helper
     dbhelper.close();
 }
        public List<object> get()
        {
            List<object> retColl = new List<object>();

            // Create DBHelper's Instance
            DBHelper dbhelper = new DBHelper();
            // Get query string
            string insertstr = buildStringForQuery();
            // Get from DB
            OleDbDataReader dr = dbhelper.ExecuteQuery(insertstr);
            // Get rows and convert them to user collection
            if (dr.HasRows)
            {
                while (dr.Read())
                {
                    retColl.Add(convertFromReader(dr));
                }
            }
            // Close DB Helper
            dbhelper.close();
            return retColl;
        }