Can we make a relation between two Generic Lists?

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C#

C#4.0

Hi every one! Can we eatablish any relation between two lists?I just want to query the list and find the related result from other list.Please suggest some idea

class GeneralClass
    {
        //public List<int> Student_RollNumber = new List<int>();
        //public List<string> Student_Name = new List<string>();
        private List<int> _student_rollnumber = new List<int>();
        private List<string> _student_name = new List<string>();
        public List<int> Student_RollNumber
        {
            get { return _student_rollnumber; }
            set { _student_rollnumber = value; }
        }
        public List<string> Student_Name
        {
            get { return _student_name; }
            set { _student_name = value; }
        }
    }

private void btn_save_Click(object sender, EventArgs e)
        {
            try
            {
                obj.Student_RollNumber.Add(int.Parse(txtbx_rollnum.Text));
                obj.Student_Name.Add(txtbx_SName.Text);
                MessageBox.Show("Data saved");
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "Message from form");
            }
        }
        private void button2_Click(object sender, EventArgs e)
        {
            try
            {
               var result = obj.Student_Name.Contains(txtbx_find.Text).ToString();
              MessageBox.Show(result.ToString());
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }

Here i want the Student name when i search for Rollnumber.Can we have multiple column's in a List.