RichTextBox AutoResize 샘플코드

내용에 따라서 자동으로 크기가 변하는 RichTextBox 샘플코드이다.

The key is handling the ContentsResized event on the RichTextBox (doesn't exist on a TextBox).
The ContentsResizedEventArgs has a NewRectangle property which will give you the desired size.


using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace RichTextBoxAutoResizeSample
{
   public partial class Form1 : Form
   {
       public Form1()
       {
           InitializeComponent();
       }
       
       private void richTextBox1_ContentsResized(object sender, ContentsResizedEventArgs e)
       {
           this.richTextBox1.Height = e.NewRectangle.Height + 5;
       }
   }
}