本文是利用PrintDocument定制打印单据的小例子，仅供学习分享使用，如果不足之处，还请指正。
涉及知识点：
- PrintDocument :从 Windows 窗体应用程序打印时，定义一种可重用的可发送到打印机上的对象。
- PrintPreviewControl :表示 Windows 窗体应用程序打印预览的原始预览部分，没有任何对话框或按钮。
- Graphics ：GDI+绘图对象
- PrinterSettings：设置打印机属性，如：设置属性Copies，可以设置打印份数，默认为1，
- PageSettings：指定应用于单页打印的设置
- DefaultPageSettings：PrintDocument的属性
- PrintPage事件：PrintDocument的事件，通过此事件来绘制需要打印的内容
- PaperSize：指定纸张大小
- 毫米和英寸的换算：打印机是以英寸为单位的，单据设置是以毫米为单位的，所以需要转换
效果图如下：
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 DemoPrint
{public partial class MainForm : Form{private int width_p = 200;//单位是mmprivate int height_p = 70;//单位是mmprivate int margin_lr = 2;//左右边距private int margin_tb = 2;//上下边距/// <summary>/// 需要打印的内容/// </summary>public List<PrintInfo> PrintInfos { get; set; }private PrintHelper printHelper = new PrintHelper();public MainForm(){InitializeComponent();}private void MainForm_Load(object sender, EventArgs e){InitInfo();InitDocument();}private void InitInfo() {PrinterSettings printSetting = new PrinterSettings();printSetting.PrintRange = PrintRange.AllPages;int width_in = MM2Inch(width_p);int height_in = MM2Inch(height_p);PageSettings pageSetting = new PageSettings(printSetting);pageSetting.PaperSize = new PaperSize("customer",width_in, height_in);int margin_lr_in = MM2Inch(margin_lr);int margin_tb_in = MM2Inch(margin_tb);pageSetting.Margins = new Margins(margin_lr_in, margin_lr_in, margin_tb_in, margin_tb_in);this.pdControl.DefaultPageSettings = pageSetting;}private void InitDocument() {List<PrintInfo> lstPrintInfos = new List<PrintInfo>();PrintInfo p0 = new PrintInfo(){PrtType = PrintType.Table,PrtColor = Color.Brown,Row = int.Parse(this.txtRow.Text.Trim()),Column = int.Parse(this.txtColumn.Text.Trim()),Start = new Point(int.Parse(this.txtStart.Text.Trim(new char[] { '(', ')' }).Split(',')[0]), int.Parse(this.txtStart.Text.Trim(new char[] { '(', ')' }).Split(',')[1])),End = new Point(int.Parse(this.txtEnd.Text.Trim(new char[] { '(', ')' }).Split(',')[0]), int.Parse(this.txtEnd.Text.Trim(new char[] { '(', ')' }).Split(',')[1]))};lstPrintInfos.Add(p0);printHelper.PrintInfos = lstPrintInfos;}/// <summary>/// 转换毫米到百分之一英寸/// </summary>/// <param name="mm"></param>/// <returns></returns>private int MM2Inch(int mm) {return (int)(mm * 100.0f / 25.4f);}/// <summary>/// 打印开始事件/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void pdControl_BeginPrint(object sender, PrintEventArgs e){}/// <summary>/// 打印事件/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void pdControl_PrintPage(object sender, PrintPageEventArgs e){Font font = new Font("Arial", 14f, FontStyle.Regular);Graphics g = e.Graphics;g.PageScale = 1;g.PageUnit = GraphicsUnit.Millimeter;//先画一个矩形Pen lineColor = new Pen(Color.Black, 0.2f);g.FillRectangle(Brushes.Linen,0,0,width_p,height_p);printHelper.Print(g);}/// <summary>/// 打印结束事件/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void pdControl_EndPrint(object sender, PrintEventArgs e){}/// <summary>/// 打印/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void btnPrint_Click(object sender, EventArgs e){//打印对话框if (this.ptDControl.ShowDialog() == DialogResult.OK){this.pdControl.Print();}}private void lblColor_Click(object sender, EventArgs e){ColorDialog f = new ColorDialog();if (f.ShowDialog() == DialogResult.OK){this.lblColor.BackColor = f.Color;}}/// <summary>/// 刷新/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void btnRefresh_Click(object sender, EventArgs e){List<PrintInfo> lstPrintInfos = new List<PrintInfo>();//表格配置PrintInfo p0 = new PrintInfo(){PrtType = PrintType.Table,PrtColor = Color.Brown,Row = int.Parse(this.txtRow.Text.Trim()),Column = int.Parse(this.txtColumn.Text.Trim()),Start = new Point(int.Parse(this.txtStart.Text.Trim(new char[] { '(', ')' }).Split(',')[0]), int.Parse(this.txtStart.Text.Trim(new char[] { '(', ')' }).Split(',')[1])),End = new Point(int.Parse(this.txtEnd.Text.Trim(new char[] { '(', ')' }).Split(',')[0]), int.Parse(this.txtEnd.Text.Trim(new char[] { '(', ')' }).Split(',')[1]))};lstPrintInfos.Add(p0);//标题配置PrintInfo p1 = new PrintInfo(){PrtType = PrintType.Text,PrtColor = this.lblColor.BackColor,Content = this.txtTitle.Text.Trim(),Size = int.Parse(this.txtSize.Text.Trim()),FontStyle = chkBold.Checked ? FontStyle.Bold : FontStyle.Regular,Start = new Point(int.Parse(this.txtLocation.Text.Trim(new char[] { '(', ')' }).Split(',')[0]), int.Parse(this.txtLocation.Text.Trim(new char[] { '(', ')' }).Split(',')[1]))};lstPrintInfos.Add(p1);//内容TextBox[] T = new TextBox[12] { T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12 };TextBox[] L = new TextBox[12] { L1, L2, L3, L4, L5, L6, L7, L8, L9, L10, L11, L12 };for (int i = 0; i < 12; i++){PrintInfo p = new PrintInfo(){PrtType = PrintType.Text,PrtColor = Color.Black,Content = T[i].Text.Trim(),Size = 12,FontStyle = FontStyle.Regular,Start = new Point(int.Parse(L[i].Text.Trim(new char[] { '(', ')' }).Split(',')[0]), int.Parse(L[i].Text.Trim(new char[] { '(', ')' }).Split(',')[1]))};lstPrintInfos.Add(p);}//打印时间PrintInfo p2 = new PrintInfo(){PrtType = PrintType.Text,PrtColor = this.lblColor.BackColor,Content = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"),Size =11,FontStyle =FontStyle.Regular,Start = new Point(145,63)};lstPrintInfos.Add(p2);printHelper.PrintInfos = lstPrintInfos;this.ppVControl.InvalidatePreview();//刷新文档的预览，重新调用PrintDocument的Print方法}}
}源码链接
