How to Act on Gridview;s Button Event

See more:

C#

WinForms

DataGridView

 private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)
        {
                       
if (e.RowIndex >= 0 && e.ColumnIndex==4 && ((DataGridView)sender).Columns[e.ColumnIndex].GetType() ==  typeof(DataGridViewButtonColumn))
              {
                  DataGridViewRow row = (DataGridViewRow)dataGridView1.Rows[0].Clone();
                  dataGridView1.Rows.Add(row);
               }
        }

I am using the above code to generate another row in Gridview on button click which is working fine on button click but the problem is when i do Combo box click or do textboxes text change (Comboboxes and Textboxes are also include in Gridview's Row with button) a new row appear automatically without the running of above code. how new row i appearing i didnt do any code