public bool updatebm(string ma, string ten)
{
tlb_bomon bm = timbm(ma);
bm.ten_bn = ten;
try
{
db.SubmitChanges();
}
catch
{
return(false);
}
return(true);
}
public bool deletebm(string ma, string ten)
{
tlb_bomon bm = timbm(ma);
db.tlb_bomons.DeleteOnSubmit(bm);
try
{
db.SubmitChanges();
}
catch
{
return(false);
}
return(true);
}
public bool thembm(string mabm, string ten)
{
tlb_bomon tb = new tlb_bomon();
tb.ma_bm = mabm;
tb.ten_bn = ten;
db.tlb_bomons.InsertOnSubmit(tb);
try
{
db.SubmitChanges();
}
catch
{
return(false);
}
return(true);
}
