（打印机Printer）小票打印

源码路径为
E:\WGY\C#学习\一套开源的企业业务系统框架Winform\586570 31天学会CRM项目开发pdf+源代码\31天学会CRM项目开发-源代码\003 实例及拓展练习\PrintDemo

设计的WMI操作参考https://blog.csdn.net/u011854789/article/details/52792083

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Management;namespace PrintDemo
{public partial class Form1 : Form{// 引用系统API的SetDefaultPrinter()方法，设置默认打印机[DllImport("winspool.drv")]public static extern bool SetDefaultPrinter(string Name);public Form1(){InitializeComponent();}private void Form1_Load(object sender, EventArgs e){//设置初始值barEditItem3.EditValue = "无";//使用其上一层级的控件EditValue方法//指定打印文档this.printDialog1.Document = this.printDocument1;this.pageSetupDialog1.Document = printDocument1;this.printPreviewDialog1.Document = this.printDocument1;}/// <summary>/// 执行打印/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void btnPrint_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e){//设置选定的默认打印机SetDefaultPrinter(barEditItem3.EditValue.ToString());//执行打印this.printDocument1.Print();}/// <summary>/// 页面设置的单击事件处理/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void btnPageSet_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e){//页面设置//页边距设置this.pageSetupDialog1.PageSettings.Margins.Left = 1;this.pageSetupDialog1.PageSettings.Margins.Top = 1;this.pageSetupDialog1.PageSettings.Margins.Bottom = 1;this.pageSetupDialog1.PageSettings.Margins.Right = 1;//确定后直接打印if (this.pageSetupDialog1.ShowDialog() == System.Windows.Forms.DialogResult.OK)this.printDocument1.Print();}/// <summary>///  打印机设置的单击事件处理/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void btnPrinterSet_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e){//打印机设置//确定后直接打印if (this.printDialog1.ShowDialog() == System.Windows.Forms.DialogResult.OK)this.printDocument1.Print();}/// <summary>/// 打印预览的单击事件处理/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void btnPrintPreview_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e){this.printDocument1.Print();}/// <summary>/// 打印文字/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e){//当有多页需要打印时，需要该事件加入e.HasMorePages = true来告诉打印机还有更多页//需继续打印。//e.HasMorePages = true;//设置打印机质量e.Graphics.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;e.Graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;e.Graphics.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;Font drawFont = new Font("Arial",14);SolidBrush drawBrush = new SolidBrush(Color.Black);float x = 3;float y = 3;StringBuilder sb = new StringBuilder();sb.Append("青岛**有限公司江山路店\r\n");sb.Append("--------------------------\r\n");sb.Append("品名    \t单价\t数量\t金额\r\n");sb.Append("打火机  \t2.00\t1.00\t2.00\r\n");sb.Append("青岛啤酒\t10.00\t30.00\t300.00\r\n");sb.Append("瓜子    \t9.00\t2.00\t18.00\r\n");sb.Append("橙汁    \t12.00\t1.00\t12.00\r\n");sb.Append("合计    \t \t \t332.00\r\n");sb.Append("--------------------------\r\n");sb.Append(string.Format("打印日期: {0}\r\n 操作员:{1}\r\n\r\n",DateTime.Now.ToString("yyyy-MM-dd HH:mm"),"001"));#if false//打印文字e.Graphics.DrawString(sb.ToString(), drawFont, drawBrush, x, y);
#else//打印图片this.pictureBox1.SizeMode = PictureBoxSizeMode.AutoSize;//创建一个空白图像Bitmap b = new Bitmap(400,600);//设置pictureBox1的图像this.pictureBox1.Image = b;Graphics gra = Graphics.FromImage(this.pictureBox1.Image);gra.DrawString(sb.ToString(),drawFont,drawBrush,x,y);//设置pictureBox1的图像this.pictureBox1.Refresh();e.Graphics.DrawImage(this.pictureBox1.Image, new Point(3, 3));
#endif}/// <summary>/// 设置默认打印机/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void barButtonItem2_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e){          //需要引用System.Management命名空间//首先遍历全部打印机，使用ManagementObjectSearcher对象ManagementScope ms = new ManagementScope(ManagementPath.DefaultPath);ms.Connect();SelectQuery sq = new SelectQuery();sq.QueryString = @"SELECT Name FROM WIN32_Printer";ManagementObjectSearcher mos = new ManagementObjectSearcher(ms,sq);foreach (ManagementObject mo in mos.Get())repositoryItemComboBox1.Items.Add(mo["Name"].ToString());}}
}

工具条使用了DevExpress16.2

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