C#利用PrintDocument定制打印单据的小例子

前言

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：

核心代码

关键代码如下：

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mm

  private int height_p = 70;//单位是mm

  private 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

总结

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