private void dataGridView1_CellContentClick_1(object sender, DataGridViewCellEventArgs e)
        {
            foreach (dataGridViewRow row in dataGridView1.Rows)
            {

                string RowType = row.Cells[1].Value.ToString();

                if (RowType == "toptanci")
                {

                    e.Row.Cells[1].BackColor = System.Drawing.Color.Green;

                }

                else if (RowType == "perakendeci")
                {

                    e.Row.Cells[1].BackColor = System.Drawing.Color.Red;


                }