datagridview control column row programitically

 Adding datagridview column row programitically And button control .


private void dataGridView1_CellClick(object sender, DataGridViewCellEventArgs e)
        {
            if (e.ColumnIndex == 3)
            {
                MessageBox.Show((e.RowIndex + 1) + "  Row  " + (e.ColumnIndex + 1) + "  Column button clicked ");
            }
        }

        private void button1_Click_1(object sender, EventArgs e)
        {
            dataGridView1.ColumnCount = 3;
            dataGridView1.Columns[0].Name = "Product ID";
            dataGridView1.Columns[1].Name = "Product Name";
            dataGridView1.Columns[2].Name = "Product Price";

            string[] row = new string[] { "1", "Product 1", "1000" };
            dataGridView1.Rows.Add(row);
            row = new string[] { "2", "Product 2", "2000" };
            dataGridView1.Rows.Add(row);
            row = new string[] { "3", "Product 3", "3000" };
            dataGridView1.Rows.Add(row);
            row = new string[] { "4", "Product 4", "4000" };
            dataGridView1.Rows.Add(row);

            DataGridViewButtonColumn btn = new DataGridViewButtonColumn();
            dataGridView1.Columns.Add(btn);
            btn.HeaderText = "Click Data";
            btn.Text = "Click Here";
            btn.Name = "btn";
            btn.UseColumnTextForButtonValue = true;

            DataGridViewButtonColumn btn1 = new DataGridViewButtonColumn();
            dataGridView1.Columns.Add(btn1);
            btn1.HeaderText = "Click Data";
            btn1.Text = "Click Here";
            btn1.Name = "btn";
            btn1.UseColumnTextForButtonValue = true;
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)
        {
            if (e.ColumnIndex == 3)
            {


                string rup = dataGridView1.Rows[e.RowIndex].Cells[e.ColumnIndex].Value.ToString();

                if (rup == "Click Here")
                {
                    MessageBox.Show("this is test");
                }
               
                MessageBox.Show((e.RowIndex + 1) + "  Row  " + (e.ColumnIndex + 1) + "  Column button clicked ");
            }
        }