private void xoaToolStripMenuItem_Click(object sender, EventArgs e)
{
MonHoc mh = new MonHoc();
string mamh = dataGridView1.CurrentRow.Cells[0].Value.ToString();
mh = db.MonHocs.Where(t => t.MaMonHoc == mamh).FirstOrDefault();
db.MonHocs.DeleteOnSubmit(mh);
db.SubmitChanges();
var monhocss = from mh1 in db.MonHocs select mh1;
dataGridView1.DataSource = monhocss;
}
private void themToolStripMenuItem_Click(object sender, EventArgs e)
{
if (txtMaMonHoc.Text == "" || txtTenMonHoc.Text == "")
{
MessageBox.Show("Bạn chua nhạp đủ");
}
MonHoc mh = new MonHoc();
mh.MaMonHoc = txtMaMonHoc.Text;
mh.TenMonHoc = txtTenMonHoc.Text;
db.MonHocs.InsertOnSubmit(mh);
db.SubmitChanges();
var monhocss = from mh1 in db.MonHocs select mh1;
dataGridView1.DataSource = monhocss;
}
private void suaToolStripMenuItem_Click(object sender, EventArgs e)
{
MonHoc mh = new MonHoc();
string mamh = dataGridView1.CurrentRow.Cells[0].Value.ToString();
mh = db.MonHocs.Where(t => t.MaMonHoc == mamh).FirstOrDefault();
if (mh != null)
{
mh.MaMonHoc = txtMaMonHoc.Text;
mh.TenMonHoc = txtTenMonHoc.Text;
db.SubmitChanges();
}
else
{
MessageBox.Show("Khong ton tai");
}
var monhocss = from mh1 in db.MonHocs select mh1;
dataGridView1.DataSource = monhocss;
}
partial void DeleteMonHoc(MonHoc instance);
partial void UpdateMonHoc(MonHoc instance);
partial void InsertMonHoc(MonHoc instance);