How to update Access Database in C#?

[Brian Connelly]

I am developing an application and all of my code reads and inserts into an mdb database file. However when I try to update, the code executes without issue, but when I check the database, the updates are not there. Here is my update code:

            else if(isNewEntry == false)
            {
                string query = "UPDATE hours SET hoursWorked = @p3 WHERE contactID = @p1 AND fiscalYearID = @p2";
                cmd.CommandText = query;
                foreach (DataGridViewRow row in dgvTime.Rows)
                {
                   
                    id = Convert.ToInt16(row.Cells["contactID"].Value);
                    hours = Convert.ToInt16(row.Cells["hoursWorked"].Value);
                    year = yr;// Convert.ToInt16(cbFiscalYear.SelectedIndex.ToString()); 
                    cmd.Parameters.AddWithValue("@p1", id.ToString());
                    cmd.Parameters.AddWithValue("@p2", year.ToString());
                    cmd.Parameters.AddWithValue("@p3", hours.ToString());
                    cmd.Connection.Open();
                    cmd.ExecuteNonQuery();
                    cmd.Parameters.Clear();
                    cmd.Connection.Close();
                    pbEnteringData.PerformStep();
                }
                pbEnteringData.Value = 0;

Any help would be greatly appreciated.