198 lines
7.4 KiB
C#
198 lines
7.4 KiB
C#
using Microsoft.Reporting.WinForms;
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using System;
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using System.Collections.Generic;
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using System.Data;
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using System.Drawing;
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using System.Drawing.Imaging;
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using System.Drawing.Printing;
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using System.IO;
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using System.Linq;
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using System.Text;
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using ZXing;
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using ZXing.Common;
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namespace HighWay.PrintLable
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{
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public class PrintHelper
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{
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#region 方法 -> 打印列表
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private IList<Stream> m_streams;//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
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private bool isLandSapces = false;
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EncodingOptions options = null;
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BarcodeWriter writer = null;
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int page = 0;
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string RdlcUrl;
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DataTable GoodsTable;
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decimal PageLeft;
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decimal PageRight;
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decimal PageTop;
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decimal PageBottom;
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#region 打印
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/// <summary>
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/// 打印
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/// </summary>
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/// <param name="goodsTable">打印列表</param>
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/// <param name="rdlcUrl">报表路径</param>
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/// <param name="pageLeft">左边距</param>
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/// <param name="pageRight">右边距</param>
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/// <param name="pageTop">上边距</param>
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/// <param name="pageBottom">下边距</param>
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/// <returns></returns>
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public bool Print(DataTable goodsTable, string rdlcUrl, decimal pageLeft = 0, decimal pageRight = 0, decimal pageTop = 0, decimal pageBottom = 0)
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{
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RdlcUrl = rdlcUrl;
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GoodsTable = goodsTable;
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PageLeft = pageLeft;
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PageRight = pageRight;
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PageTop = pageTop;
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PageBottom = pageBottom;
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//获取当前已勾选条码用于生产数据源，如果无则跳出
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if (goodsTable.Rows.Count <= 0)
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{
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return false;
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}
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//判断系统是否有已连接的打印机
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if (PrinterSettings.InstalledPrinters.Count == 0)
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{
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System.Windows.MessageBox.Show("未检测到打印机，请先安装打印机", "系统提示");
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return false;
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}
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//判断是否超过1000条数据(数据过多会出现打印错误)
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if (goodsTable.Rows.Count > 1000)
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{
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//txtMessage.Text = "最多一次只可打印1000条!";
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return false;
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}
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using (PrintDocument printDocument = new PrintDocument())//创建对象
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{
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//打印开始前
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printDocument.BeginPrint += new PrintEventHandler(printDocument_BeginPrint);
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//打印输出（过程）
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printDocument.PrintPage += new PrintPageEventHandler(printDocument_PrintPage);
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//打印结束
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printDocument.EndPrint += new PrintEventHandler(printDocument_EndPrint);
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//跳出打印对话框，提供打印参数可视化设置，如选择哪个打印机打印此文档等
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System.Windows.Forms.PrintDialog pd = new System.Windows.Forms.PrintDialog();
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pd.Document = printDocument;
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if (System.Windows.Forms.DialogResult.OK == pd.ShowDialog()) //如果确认，将会覆盖所有的打印参数设置
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{
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printDocument.Print(); //打印
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}
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}
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return true;
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}
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#endregion
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#region 打印开始前绑定数据源
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#region 条码生成
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public static byte[] Bitmap2Byte(Bitmap bitmap)
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{
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using (MemoryStream stream = new MemoryStream())
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{
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bitmap.Save(stream, ImageFormat.Bmp);
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byte[] data = new byte[stream.Length];
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stream.Seek(0, SeekOrigin.Begin);
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stream.Read(data, 0, Convert.ToInt32(stream.Length));
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return data;
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}
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}
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#endregion
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#region 数据源
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void printDocument_BeginPrint(object sender, PrintEventArgs e)
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{
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#region 重写数据源
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options = new EncodingOptions
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{
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Width = 200,
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Height = 40
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};
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writer = new BarcodeWriter();
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writer.Format = BarcodeFormat.CODE_128;
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writer.Options = options;
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#endregion
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#region 加载报表源
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ReportViewer rvDoc = new ReportViewer();
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rvDoc.LocalReport.ReportEmbeddedResource = RdlcUrl;
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rvDoc.LocalReport.DataSources.Add(new ReportDataSource("DataSet1", GoodsTable));
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PrintStream(rvDoc.LocalReport);
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#endregion
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}
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#endregion
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#endregion
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#region 获取rdlc文件作为打印数据源
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private Stream CreateStream(string name, string fileNameExtension, Encoding encoding, string mimeType, bool willSeek)
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{
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//如果需要将报表输出的数据保存为文件，请使用FileStream对象。
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Stream stream = new MemoryStream();
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m_streams.Add(stream);
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return stream;
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}
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public void PrintStream(LocalReport rvDoc)
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{
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//获取LocalReport中的报表页面方向
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isLandSapces = rvDoc.GetDefaultPageSettings().IsLandscape;
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Export(rvDoc);
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}
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private void Export(LocalReport report)
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{
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//绑定打印边距
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decimal Left = PageLeft / 100;
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decimal Top = PageTop / 100;
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decimal Right = PageRight / 100;
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decimal Bottom = PageBottom / 100;
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string deviceInfo =
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"<DeviceInfo>" +
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" <OutputFormat>EMF</OutputFormat>" +
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" <MarginTop>" + Top + "in</MarginTop>" +
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" <MarginLeft>" + Left + "in</MarginLeft>" +
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" <MarginRight>" + Right + "in</MarginRight>" +
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" <MarginBottom>" + Bottom + "in</MarginBottom>" +
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"</DeviceInfo>";
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Warning[] warnings;
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m_streams = new List<Stream>();
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//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。
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report.Render("Image", deviceInfo, CreateStream, out warnings);
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foreach (Stream stream in m_streams)
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stream.Position = 0;
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}
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void printDocument_PrintPage(object sender, PrintPageEventArgs e)
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{
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//打印啥东东就在这写了
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//Metafile对象用来保存EMF或WMF格式的图形，
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//我们在前面将报表的内容输出为EMF图形格式的数据流。
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Metafile pageImage = new Metafile(m_streams[page]);
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//调整打印机区域的边距
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System.Drawing.Rectangle adjustedRect = new System.Drawing.Rectangle(0, 0, e.PageBounds.Width, e.PageBounds.Height);
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//获取报告内容
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//这里的Graphics对象实际指向了打印机
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e.Graphics.DrawImage(pageImage, e.PageBounds);
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page++;
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//设置是否需要继续打印
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e.HasMorePages = (page < m_streams.Count);
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if (page == m_streams.Count)
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{
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page = 0;
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m_streams = null;
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}
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}
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#endregion
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#region 打印结束后触发
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static void printDocument_EndPrint(object sender, PrintEventArgs e)
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{
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}
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#endregion
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#endregion
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}
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}
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