using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Drawing.Printing;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Windows.Forms;namespace pdPrint{ public partial class Form1 : Form { private int lineSize; //每行打印字数 private List<string> textList; //打印内容行 private int lineHeight; //打印行高 private int fontSize; //字大小 public Form1() { lineSize = 20; //设置每行打印字数 lineHeight = 22; //行高 1/100 英寸 fontSize = 12; //字体大小 1/英寸 InitializeComponent(); } private void btn_Print_Click(object sender, EventArgs e) { if (string.IsNullOrWhiteSpace(this.txt_PrintText.Text)) { return; } //原文字行或者段落内容 var sourceTexts = this.txt_PrintText.Text.Split(new string[] { Environment.NewLine }, StringSplitOptions.RemoveEmptyEntries); //重新把文字进行分行树立 textList = new List<string>(); foreach (var item in sourceTexts) { if (!string.IsNullOrWhiteSpace(item)) { if (item.Length > lineSize) { textList.AddRange(GetArr(lineSize, item)); } else { textList.Add(item); } } } PrintDocument pd = new PrintDocument(); pd.PrintPage += new PrintPageEventHandler(Print_Content); //纸张设置默认 PaperSize pageSize = new PaperSize("自定义纸张", fontSize * lineSize, (textList.Count * lineHeight)); pd.DefaultPageSettings.PaperSize = pageSize; try { pd.Print(); } catch (Exception ex) { MessageBox.Show("打印失败." + ex.Message); } } /// <summary> /// 打印内容事件 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void Print_Content(object sender, PrintPageEventArgs e) { var mark = 0; foreach (var item in textList) { e.Graphics.DrawString(item, new Font(new FontFamily("宋体"), fontSize), System.Drawing.Brushes.Black, 0, mark * lineSize); mark++; } } /// <summary> /// 根据内容进行分行 /// </summary> /// <param name="linelen">每行字数</param> /// <param name="text">原文字行（段落）文字</param> /// <returns></returns> private List<string> GetArr(int linelen, string text) { var list = new List<string>(); int listcount = text.Length % linelen == 0 ? text.Length / linelen : (text.Length / linelen) + 1; for (int j = 0; j < listcount; j++) { try { list.Add(text.Substring(j * linelen, linelen)); } catch (Exception) { list.Add(text.Substring(j * linelen)); } } return list; } }}原文：http://www.cnblogs.com/jiangyuxuan/p/5149850.html