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   源码介绍

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using Microsoft.Reporting.WinForms;
using Microsoft.ReportingServices.Interfaces;
using Microsoft.ReportingServices.ReportProcessing.ReportObjectModel;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Drawing.Imaging;
using System.Drawing.Printing;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Xml.Linq;

namespace PrintHelper
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            Microsoft.Reporting.WinForms.ReportViewer reportViewer = new ReportViewer();
            reportViewer.LocalReport.ReportPath = "D:\\技术积累\\1技术实例\\PrintHelper\\PrintHelper\\PrintHelper\\test.rdl";
            reportViewer.LocalReport.ReportPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "test.rdl");
            reportViewer.LocalReport.DataSources.Clear();//清除reportviewer原来绑定的数据
            ReportDataSource rds1 = new ReportDataSource("DataSet1", new DataTable());//注意此处数据集名字
            reportViewer.LocalReport.DataSources.Add(rds1);//将数据传给reportviewer
            //List<ReportParameter> parameters = new List<ReportParameter>();
            //parameters.Add(new ReportParameter("companyEn", "YingWenMC"));
            //parameters.Add(new ReportParameter("companyCn", "重工第三公司"));
            //parameters.Add(new ReportParameter("addressCn", "重庆市第三街道"));
            //parameters.Add(new ReportParameter("addressEn", "AJIDJI SJIDSJI DJISJDIS"));
            //parameters.Add(new ReportParameter("mobile1", "135555445777"));
            //parameters.Add(new ReportParameter("mobile2", "145515448245"));
            //parameters.Add(new ReportParameter("mail", "5855445222@qq.com"));
            //parameters.Add(new ReportParameter("date", "2023-07-07"));
            //parameters.Add(new ReportParameter("orderNo", "0522555"));
            //parameters.Add(new ReportParameter("customerName", "张三"));
            //parameters.Add(new ReportParameter("customerPhone", "25252552255"));
            //parameters.Add(new ReportParameter("stallContent", "集装箱"));
            //parameters.Add(new ReportParameter("stallPhone", "1355558555"));
            //parameters.Add(new ReportParameter("cargoName", "一大批货物"));
            //parameters.Add(new ReportParameter("printUserName", "李四"));
            //parameters.Add(new ReportParameter("packageNum", "50"));
            //parameters.Add(new ReportParameter("cargoTotal", "20"));
            //parameters.Add(new ReportParameter("remark", "这里写备注"));
            //reportViewer.LocalReport.SetParameters(parameters);
           
            reportViewer.Refresh();

            Export(reportViewer.LocalReport);
            Print();
        }


        private void Export(LocalReport report)
        {
            string deviceInfo = "<DeviceInfo>"  
                "<OutputFormat>EMF</OutputFormat>"  
                "<PageWidth>23cm</PageWidth>"  
                "<PageHeight>10cm</PageHeight>"  
                "<MarginTop>0cm</MarginTop>"  
                "<MarginLeft>0cm</MarginLeft>"  
                "<MarginRight>0cm</MarginRight>"  
                "<MarginBottom>0cm</MarginBottom>"  
                "</DeviceInfo>";
            Warning[] warnings;
            m_streams.Clear();
            //将报表的内容按照deviceInfo指定的格式输出到CreateStream函数提供的Stream中。
            report.Render("Image", deviceInfo, CreateStream, out warnings);
        }
        //声明一个Stream对象的列表用来保存报表的输出数据
        //LocalReport对象的Render方法会将报表按页输出为多个Stream对象。
        private List<Stream> m_streams = new List<Stream>();
        //用来提供Stream对象的函数，用于LocalReport对象的Render方法的第三个参数。
        private Stream CreateStream(string name, string fileNameExtension,
           Encoding encoding, string mimeType, bool willSeek)
        {
            //如果需要将报表输出的数据保存为文件，请使用FileStream对象。
            Stream stream = new MemoryStream();
            m_streams.Add(stream);
            return stream;
        }
        private int m_currentPageIndex;
        private void Print()
        {
            m_currentPageIndex = 0;
            if (m_streams == null || m_streams.Count == 0)
                return;
            //声明PrintDocument对象用于数据的打印
            PrintDocument printDoc = new PrintDocument();
            //指定需要使用的打印机的名称
            printDoc.PrinterSettings.PrinterName = (new System.Drawing.Printing.PrintDocument()).PrinterSettings.PrinterName;
            
            //判断指定的打印机是否可用
            if (!printDoc.PrinterSettings.IsValid)
            {
                MessageBox.Show("找不到打印机");
                return;
            }
            //声明PrintDocument对象的PrintPage事件，具体的打印操作需要在这个事件中处理。
            printDoc.PrintPage  = new PrintPageEventHandler(PrintPage);
            //执行打印操作，Print方法将触发PrintPage事件。
            printDoc.Print();
        }
        private void PrintPage(object sender, PrintPageEventArgs ev)
        {
            try
            {
                //Metafile对象用来保存EMF或WMF格式的图形，
                //我们在前面将报表的内容输出为EMF图形格式的数据流。
                m_streams[m_currentPageIndex].Position = 0;
                Metafile pageImage = new Metafile(m_streams[m_currentPageIndex]);
                //调整打印机区域的边距
                System.Drawing.Rectangle adjustedRect = new System.Drawing.Rectangle(
                   ev.PageBounds.Left - (int)ev.PageSettings.HardMarginX,
                   ev.PageBounds.Top - (int)ev.PageSettings.HardMarginY,
                   ev.PageBounds.Width,
                   ev.PageBounds.Height);

                //指定是否横向打印
                ev.PageSettings.Landscape = true;
                //ev.Graphics.TranslateTransform(0, 1000);
                //ev.Graphics.RotateTransform(-90.0F);

                //这里的Graphics对象实际指向了打印机
                ev.Graphics.DrawImage(pageImage, adjustedRect);  //防止字体变大 

                m_streams[m_currentPageIndex].Close();
                m_currentPageIndex  ;
                //设置是否需要继续打印
                ev.HasMorePages = (m_currentPageIndex < m_streams.Count);
            }
            catch 
            { 
            
            }
           
        }
    }
}