插入C#后如何获取主键

Question

I want to insert into 2 tables using c# and wpf, after getting the information that i need from wpf i try to insert. First I insert in the main table and it works, but when i try to get the primary key from that insertion in debug is 0 but in SSMS appear normal (ex 1200 or something), so i cannot insert in the second table which has a foreign key with the first one. Any suggestion?

var newsalariat = new Salariati
                {
                  
                    Nume = nume,
                    Prenume = prenume,
                    Data_angajare = data_angajare,
                    ID_birou = id_birou
                };

                context.Salariati.Add(newsalariat);
                context.SaveChanges(); //it works and i can see it in ssms

        int id_salariat_salariu = newsalariat.ID_angajat;  //here i try to get the key for the second table
        Console.WriteLine(id_salariat_salariu);
                var newsalariu = new Salarii
                {
                 
                    ID_angajat = id_salariat_salariu,
                    Salariu_brut = salariu_brut,
                    Impozit = impozit,
                    Sporuri = sporuri
                };

        context.Salarii.Add(newsalariu);
        context.SaveChanges(); //here i get the error

Answer 1

I want to insert into 2 tables using c# and wpf, after getting the information that i need from wpf i try to insert. First I insert in the main table and it works, but when i try to get the primary key from that insertion in debug is 0 but in SSMS appear normal (ex 1200 or something), so i cannot insert in the second table which has a foreign key with the first one. Any suggestion?

var newsalariat = new Salariati
                {
                  
                    Nume = nume,
                    Prenume = prenume,
                    Data_angajare = data_angajare,
                    ID_birou = id_birou
                };

                context.Salariati.Add(newsalariat);
                context.SaveChanges(); //it works and i can see it in ssms

        int id_salariat_salariu = newsalariat.ID_angajat;  //here i try to get the key for the second table
        Console.WriteLine(id_salariat_salariu);
                var newsalariu = new Salarii
                {
                 
                    ID_angajat = id_salariat_salariu,
                    Salariu_brut = salariu_brut,
                    Impozit = impozit,
                    Sporuri = sporuri
                };

        context.Salarii.Add(newsalariu);
        context.SaveChanges(); //here i get the error