private void button3_Click(object sender, EventArgs e)
{
string mamh, tenmh, sotinchi, sotiet, manganh;
mamh = txtmamh.Text.Trim();
tenmh = txttenmh.Text.Trim();
sotinchi = txtsotinchi.Text.Trim();
sotiet = txtsotiet.Text.Trim();
manganh = txtmn.Text.Trim();
MonHoc MH = new MonHoc(mamh, tenmh, sotinchi, sotiet, manganh);
try
{
int i = new MonHocBus().SuaMH(MH);
if (i == -2)
{
throw new Exception();
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
dgvMH.DataSource = GetMH();
}
public List <MonHoc> GetMH()
{
try
{
string sql = "select * from MonHoc";
MonHocBus mh = new MonHocBus();
return(mh.GetMH(sql));
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
return(null);
}
}
private void button2_Click(object sender, EventArgs e)
{
string mamh;
mamh = txtmamh.Text.Trim();
try
{
int i = new MonHocBus().XoaMH(mamh);
if (i == -2)
{
throw new Exception();
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
dgvMH.DataSource = GetMH();
}
