student-repo.cs

public class StudentRepository : GenericRepository<Student>
{
    public List<Student> Search(string name)
    {
        if (string.isNullOrEmpty(name)) return null;
        
        var students = this.SelectAll().ToList();

        var search = students.Where(s => s.Name.ToLower().Contains(name.ToLower())).ToList();

        return search;
    }
}