private void btnBelowAverage_Click(object sender, EventArgs e) { richTextBox1.Clear(); foreach (Student student in proxy.BelowAverage()) { richTextBox1.AppendText(string.Format("First name: {0}\nLastName: {1}\nID: {2}\nScores: {3}", student.First, student.Last, student.ID, displayScores(student))); } }