来个Winform大佬救救孩子吧😭

写之前读一次，读到最大值，+1再存进去

struct Student
{
public string StudentID;
public string Name;
public int Age;
}
List<Student> students = new List<Student>();
string nextStudentID = "";
if (students.Count > 0)
{
string lastStudentID = students[students.Count - 1].StudentID;
int lastID = int.Parse(lastStudentID.Substring(1));
int nextID = lastID + 1;
nextStudentID = "S" + nextID.ToString("D3"); // 使用D3格式化编号，确保编号的固定长度
}
else
{
nextStudentID = "S001"; // 如果没有学生信息，则从初始编号开始
}