using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; namespace test { public partial class Form1 : Form { public Form1() { InitializeComponent(); } public void WriteLine(string str) { textBox1.Text += str + "\r\n"; } public void Write(string str) { textBox1.Text += str; } } }