namespace WinFormsApp1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
for (int i = 0; i < textBox1.Lines.Length; i++) {
MessageBox.Show(textBox1.Lines[i]);
}
}
}
}
/*
run:
*/