using System.Windows.Forms;
namespace WinFormsApp1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
List<string> Lines = richTextBox1.Lines.ToList();
int lineToRemove = 1;
Lines.RemoveAt(lineToRemove);
richTextBox1.Lines = Lines.ToArray();
}
}
}
/*
* run:
*
*
*
*/