C#

foreach (var pass in effect.CurrentTechnique.Passes){                    
      pass.Apply();
}

Remove		Removes the first occurrence of a specific object from the List<T>.
RemoveAll	Removes all the elements that match the conditions defined by the specified predicate.
RemoveAt	Removes the element at the specified index of the List<T>.
RemoveRange	Removes a range of elements from the List<T>.

this.Text = finger_print.Value();

using (var command2 = new OleDbCommand())
{
    command2.Connection = connection;
    command2.CommandText = "update EmployeeData set DayStatus = ? where EID = ?";
    command2.Parameters.AddWithValue("@DayStatus", a);
    
    OleDbParameter pEID = command2.Parameters.Add("@EID", OleDbType.VarChar);
    while (reader.Read())
    {
        pEID.Value = reader["EID"];
        command2.ExecuteNonQuery();
    }
}

using (var command = new OleDbCommand())
{
    command.Connection = connection;
    command.CommandText = "update EmployeeData set DayStatus = ? where Date = ?";
    command.Parameters.AddWithValue("@DayStatus", a);
    command.Parameters.AddWithValue("@Date", theFilteredDate);
    command.ExecuteNonQuery();
}