如何使用c#, asp.net获得客户端PC打印机设置

本文关键字:客户端 PC 打印机 设置 net 何使用 asp | 更新日期: 2023-09-27 17:49:46

我有SSRS报告在web应用程序上运行。我想直接在客户的打印机上打印SSRS报告数据。应用程序在我的pc上运行良好,但当我在IIS web服务器上发布应用程序时,应用程序不是检索客户端pc的打印机设置,而是试图查找安装在服务器机器上的打印机。

我正在使用System.Drawing。打印,有没有办法在客户端计算机上获得已安装打印机的设置,或者我们可以使用c#从Web打印SSRS报告?

我使用以下代码:

    using System;
    using System.IO;
    using System.Text;
    using System.Globalization;
    using System.Drawing;
    using System.Drawing.Imaging;
    using System.Drawing.Printing;
    using System.Collections.Specialized;
    using System.Collections.Generic;
    using Microsoft.Reporting.WebForms;
    using SeaWorld.Common.Helper;
namespace SeaWorld.BusinessObjects.BAL.Generated
{
    public class ReportPrintDocument : PrintDocument
    {
        private PageSettings m_pageSettings;
        private int m_currentPage;
        private List<Stream> m_pages = new List<Stream>();
        public ReportPrintDocument(ServerReport serverReport): this((Report)serverReport)
        {
            RenderAllServerReportPages(serverReport);
        }
        //public ReportPrintDocument(LocalReport localReport): this((Report)localReport)
        //{
        //    RenderAllLocalReportPages(localReport);
        //}
        private ReportPrintDocument(Report report)
        {
            // Set the page settings to the default defined in the report
            ReportPageSettings reportPageSettings = report.GetDefaultPageSettings();
            // The page settings object will use the default printer unless
            // PageSettings.PrinterSettings is changed.  This assumes there
            // is a default printer.
            m_pageSettings = new PageSettings();
            m_pageSettings.PaperSize = reportPageSettings.PaperSize;
            m_pageSettings.Margins = reportPageSettings.Margins;
        }
        protected override void Dispose(bool disposing)
        {
            base.Dispose(disposing);
            if (disposing)
            {
                foreach (Stream s in m_pages)
                {
                    s.Dispose();
                }
                m_pages.Clear();
            }
        }
        protected override void OnBeginPrint(PrintEventArgs e)
        {
            base.OnBeginPrint(e);
            m_currentPage = 0;
        }
        protected override void OnPrintPage(PrintPageEventArgs e)
        {
            base.OnPrintPage(e);
            Stream pageToPrint = m_pages[m_currentPage];
            pageToPrint.Position = 0;
            // Load each page into a Metafile to draw it.
            using (Metafile pageMetaFile = new Metafile(pageToPrint))
            {
                Rectangle adjustedRect = new Rectangle(
                        e.PageBounds.Left - (int)e.PageSettings.HardMarginX,
                        e.PageBounds.Top - (int)e.PageSettings.HardMarginY,
                        e.PageBounds.Width,
                        e.PageBounds.Height);
                // Draw a white background for the report
                e.Graphics.FillRectangle(Brushes.White, adjustedRect);
                // Draw the report content
                e.Graphics.DrawImage(pageMetaFile, adjustedRect);
                // Prepare for next page.  Make sure we haven't hit the end.
                m_currentPage++;
                e.HasMorePages = m_currentPage < m_pages.Count;
            }
        }
        protected override void OnQueryPageSettings(QueryPageSettingsEventArgs e)
        {
            e.PageSettings = (PageSettings)m_pageSettings.Clone();
        }
        private void RenderAllServerReportPages(ServerReport serverReport)
        {
            string deviceInfo = CreateEMFDeviceInfo();
            // Generating Image renderer pages one at a time can be expensive.  In order
            // to generate page 2, the server would need to recalculate page 1 and throw it
            // away.  Using PersistStreams causes the server to generate all the pages in
            // the background but return as soon as page 1 is complete.
            NameValueCollection firstPageParameters = new NameValueCollection();
            firstPageParameters.Add("rs:PersistStreams", "True");
            // GetNextStream returns the next page in the sequence from the background process
            // started by PersistStreams.
            NameValueCollection nonFirstPageParameters = new NameValueCollection();
            nonFirstPageParameters.Add("rs:GetNextStream", "True");
            string mimeType;
            string fileExtension;
            Stream pageStream = serverReport.Render("IMAGE", deviceInfo, firstPageParameters, out mimeType, out fileExtension);
            // The server returns an empty stream when moving beyond the last page.
            while (pageStream.Length > 0)
            {
                m_pages.Add(pageStream);
                pageStream = serverReport.Render("IMAGE", deviceInfo, nonFirstPageParameters, out mimeType, out fileExtension);
            }
        }
        private void RenderAllLocalReportPages(LocalReport localReport)
        {
            string deviceInfo = CreateEMFDeviceInfo();
            Warning[] warnings;
            localReport.Render("IMAGE", deviceInfo, LocalReportCreateStreamCallback, out warnings);
        }
        private Stream LocalReportCreateStreamCallback(
            string name,
            string extension,
            Encoding encoding,
            string mimeType,
            bool willSeek)
        {
            MemoryStream stream = new MemoryStream();
            m_pages.Add(stream);
            return stream;
        }
        private string CreateEMFDeviceInfo()
        {
            PaperSize paperSize = m_pageSettings.PaperSize;
            Margins margins = m_pageSettings.Margins;
            // The device info string defines the page range to print as well as the size of the page.
            // A start and end page of 0 means generate all pages.
            return string.Format(
                CultureInfo.InvariantCulture,
                "<DeviceInfo><OutputFormat>emf</OutputFormat><StartPage>0</StartPage><EndPage>0</EndPage><MarginTop>{0}</MarginTop><MarginLeft>{1}</MarginLeft><MarginRight>{2}</MarginRight><MarginBottom>{3}</MarginBottom><PageHeight>{4}</PageHeight><PageWidth>{5}</PageWidth></DeviceInfo>",
                ToInches(margins.Top),
                ToInches(margins.Left),
                ToInches(margins.Right),
                ToInches(margins.Bottom),
                ToInches(paperSize.Height),
                ToInches(paperSize.Width));
        }
        private static string ToInches(int hundrethsOfInch)
        {
            double inches = hundrethsOfInch / 100.0;
            return inches.ToString(CultureInfo.InvariantCulture) + "in";
        }
    }
}

On print button click
 void ctrlSettingToolbar_btnPrintPressed(object sender, EventArgs e)
        {
            try
            {
                ReportPrintDocument rp = new ReportPrintDocument(rptBillOfLoadings.ServerReport);
                rp.Print();
            }
            catch (Exception ex) 
            {
                LogHelper.PrintError("Error:", ex);
            }
        }

如何使用c#, asp.net获得客户端PC打印机设置

可以使用javascript函数window.Print()这将列出您的客户端机器打印机和打印您的页面。

希望下面的代码能帮到你,试试

<html>
<head>
<script>
function page()
  {
  window.print()
  }
</script>
</head>
<body>
<input type="button" value="Print page" onclick="page()">
</body>
</html>

但是这将打印整个页面,在你的例子中是打印一个报告

希望这个链接对你有帮助

打印水晶报告到客户端打印机

打印报告到客户端默认打印机