private void ptbCategoriesAdd_Click(object sender, EventArgs e)
{
frmAddCategory frm = new frmAddCategory();
frm.ShowDialog();
frmManageCategories_Load(sender, e);
}
private void ptbCategoriesEdit_Click(object sender, EventArgs e)
{
string ctgID = dgvCategories.SelectedCells[0].OwningRow.Cells[0].Value.ToString();
string ctgName = dgvCategories.SelectedCells[0].OwningRow.Cells[1].Value.ToString();
frmAddCategory frm = new frmAddCategory(ctgID, ctgName);
frm.ShowDialog();
frmManageCategories_Load(sender, e);
}