Can I call this variable of foreach in C#?

[meomap0z1]

I have this code

class QuanLySinhVien
{
public static List<SinhVien> DanhSachSinhVien = new List<SinhVien>(50);
        public List<SinhVien> GetDanhSachSinhVien
        {
            get => DanhSachSinhVien;
        }
public void FindStudent()
        {
            Console.Write("Enter ID's student that you need to find: ");
            string msSV = Console.ReadLine().ToUpper();
            SinhVien sv = CheckExist(msSV);
            if (sv == null)
            {
                Console.Write("Can not find this student with {0}'s ID\n", msSV);
            }
            else
            {
                foreach (SinhVien s in QuanLySinhVien.DanhSachSinhVien)
                {
                    Console.WriteLine("ID: " + sv.MMaSV);
                    Console.WriteLine("Name: " + sv.HoTen1);
                    Console.WriteLine("Birthdate: ");
                    sv.NgaySinh1.ShowBirthdate();
                    Console.WriteLine("Address: " + sv.DiaChi1);
                    Console.WriteLine("Number: " + sv.DienThoai1);
                    Console.WriteLine("------*****------");
                    break;
                }
 
            }
        } 
}   
 

My question that I wanna use this " SinhVien sv " in forEach

 foreach (SinhVien s in QuanLySinhVien.DanhSachSinhVien) }
 

instead of using SinhVien s.
I do not use "SinhVien s" for printing the student on the list that I need to find.
Thanks for reading and helping me, have a nice day!!

[dbrewerton]

If you use sv instead of s, exactly what happens? Does it error out?

[meomap0z1]

Actually I do not have any problem for using sv instead of s

[Frinavale]

Do you need the foreach at all if you just want to print the details for a single, known/found object?

[vikramjk]

try using this

    foreach (SinhVien s in QuanLySinhVien.DanhSachSinhVien)
                {
                    Console.WriteLine("ID: " + s.MMaSV);
                    Console.WriteLine("Name: " + s.HoTen1);
                    Console.WriteLine("Birthdate: ");
                    s.NgaySinh1.ShowBirthdate();
                    Console.WriteLine("Address: " + s.DiaChi1);
                    Console.WriteLine("Number: " + s.DienThoai1);
                    Console.WriteLine("------*****------");
                    break;
                }
 

This should not create any error, you are just changing variable name as I understand.

if "SinhVien " has all the properties which you are looping inside foreach, then it should be fine.

Check, Variable "sv" is coming from this line of code.

 SinhVien sv = CheckExist(msSV);