private void btnAdd_Click(object sender, EventArgs e)
{
frmDemo02_Edit frm = new frmDemo02_Edit();
frm.CategoryID = -1;
frm.ShowDialog();
LoadData();
}
private void btnEdit_Click(object sender, EventArgs e)
{
if (dataGridView1.SelectedRows.Count > 0)
{
frmDemo02_Edit frm = new frmDemo02_Edit();
frm.CategoryID = (dataGridView1.SelectedRows[0].DataBoundItem as Category).CategoryID;
frm.ShowDialog();
LoadData();
}
}