Add data to dataGridView

Hi!

There is a problem: He created the following event handler:

private void bOk_Click(object sender, EventArgs e)
        {
            DebitEnter me = new DebitEnter();

            float income;
            float.TryParse(tbSumm.Text, out income);

            me.Debit = income;
            me.DateEnter = dateTimePicker_Debit.Value;
            me.Category = tbCategory.Text;
            me.Description = textBox_Description.Text;

            //add debit in table
            fdebit.AddDebit(me);
        }

Created a method:

//add debit in table
public void AddDebit(DebitEnter me)
        {
            dataGridView_Debit.Rows.Add(me.Category, me.Description, me.Debit, me.DateEnter);

        }

But when I press the button in datagridviev nothing is added. Why can not understand? Please, help!