private void deleteBtn_Click(object sender, EventArgs e)
{
int rowIndex = dataGridViewTest.CurrentCell.RowIndex;
var row = dataGridViewTest.Rows[rowIndex];
var changedValue = (string)row.Cells[rowIndex].Value;
Console.WriteLine("$$$$$$$$$$$$$$$$$ values:{0}", (string)row.Cells[rowIndex].Value);
// dataGridViewTest.Rows.RemoveAt(rowIndex);
Category categoryRef1 = new Category();
categoryRef1.categoryName = Convert.ToString(row.Cells["categoryName"].Value);
categoryRef1.categoryDesc = changedValue;
CategoryDAO categoryDAORef = new CategoryDAOImpl();
categoryDAORef.deleteCategory(categoryRef1);
dataGridViewTest.Update();
dataGridViewTest.Refresh();
}