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

namespace RtfSizingTestApp
{
	public class Form1 : Form
	{
		public Form1()
		{
			Size proposedSizeRich = new Size(700, 0);

			InitializeComponent();

			{
				string rtfTextWithLine = "{\\rtf1\\ansi line1\\line line2}";
				rtbWithLine.Rtf = rtfTextWithLine;
				Size preferredSize = rtbWithLine.GetPreferredSize(proposedSizeRich);
				rtbWithLine.Size = preferredSize;
			}

			{
				string rtfTextWithPar = "{\\rtf1\\ansi line1\\par line2}";
				rtbWithPar.Rtf = rtfTextWithPar;
				Size preferredSize = rtbWithPar.GetPreferredSize(proposedSizeRich);
				rtbWithPar.Size = preferredSize;
			}
		}

		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{
			this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
			this.ClientSize = new System.Drawing.Size(800, 450);
			this.Text = "Form1";

			rtbWithLine = new System.Windows.Forms.RichTextBox();
			rtbWithLine.Font = new System.Drawing.Font("Consolas", 9.75F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
			rtbWithLine.Dock = System.Windows.Forms.DockStyle.None;
			rtbWithLine.Location = new System.Drawing.Point(10, 10);
			rtbWithLine.Size = this.ClientSize;

			rtbWithPar = new System.Windows.Forms.RichTextBox();
			rtbWithPar.Font = new System.Drawing.Font("Consolas", 9.75F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
			rtbWithPar.Dock = System.Windows.Forms.DockStyle.None;
			rtbWithPar.Location = new System.Drawing.Point(10, 200);
			rtbWithPar.Size = this.ClientSize;

			this.Controls.Add(rtbWithLine);
			this.Controls.Add(rtbWithPar);
		}

		private System.Windows.Forms.RichTextBox rtbWithLine;
		private System.Windows.Forms.RichTextBox rtbWithPar;
	}
}