Question

我是C＃的新手并报道。我做错了什么或错过了什么？

我搜索过并搜索过，因为我的生活无法解决这个问题。

我正在使用C＃Windows Forms Application。我有report2.rdlc，一切都在报表查看器中很好用，Tablix中的文本框和数据按预期打印。当我在不使用报告查看器的情况下直接打印到打印机时，会打印文本框，但不会打印Tablix中的数据。下面提供了“报告数据”窗口的屏幕截图以及编码和说明。

Report Data Image

StatusCodes.cs表单：包含具有DialogResult的打印按钮。如果＆＃34;是＆＃34;单击，将打开StatusCodePreview.cs表单。这有报告查看器（这里没有问题）。如果＆＃34;否＆＃34;单击，这将触发PrintWithoutReportViewer.cs并将报告直接打印到默认打印机（问题：只打印文本框和列标题，数据不打印）。

private void btn_CodePrint_Click(object sender, EventArgs e)
    {
        var message = "Do you wish to preview the report before printing?";
        var title = "Preview Report";
        DialogResult dg = MessageBox.Show(message, title, MessageBoxButtons.YesNo);
        if (dg == DialogResult.Yes)
        {
            StatusCodePreview scp = new StatusCodePreview();
            scp.Show();
        }
        else if (dg == DialogResult.No)
        {
            DataTable dt = new StatusCodesPrintDataSet.DataTable1DataTable();
            LocalReport report = new LocalReport {ReportEmbeddedResource = "Toolbar.Report2.rdlc"};
            report.DataSources.Add(new ReportDataSource("StatCodePrintDataSet1", dt));

            report.PrintToPrinter();
        }
    }

PrintWithoutReportViewer.cs的代码

public static class PrintWithoutReportViewer
{
    private static int m_CurrentPageIndex;
    private static IList<Stream> m_Streams;
    private static PageSettings m_PageSettings;

    public static Stream CreateStream(string name, string fileNameExtension, Encoding encoding, string mimeType, bool willSeek)
    {
        Stream stream = new MemoryStream();
        m_Streams.Add(stream);
        return stream;
    }

    public static void Export(LocalReport report, bool print = true)
    {
        PaperSize paperSize = m_PageSettings.PaperSize;
        Margins margins = m_PageSettings.Margins;


        string deviceInfo = string.Format(
            CultureInfo.InvariantCulture,
            "<DeviceInfo>" +
            "<OutputFormat>EMF</OutputFormat>" +
            "<PageWidth>{5}</PageWidth>" +
            "<PageHeight>{4}</PageHeight>" +
            "<MarginTop>{0}</MarginTop>" +
            "<MarginLeft>{1}</MarginLeft>" +
            "<MarginRight>{2}</MarginRight>" +
            "<MarginBottom>{3}</MarginBottom>" +
            "</DeviceInfo>",
            ToInches(margins.Top),
            ToInches(margins.Left),
            ToInches(margins.Right),
            ToInches(margins.Bottom),
            ToInches(paperSize.Height),
            ToInches(paperSize.Width));

        Warning[] warnings;
        m_Streams = new List<Stream>();
        report.Render("Image", deviceInfo, CreateStream,
            out warnings);
        foreach (Stream stream in m_Streams)
            stream.Position = 0;

        if (print)
        {
            Print();
            //PrintDialog startPrint = new PrintDialog();
            //startPrint.ShowDialog();
        }
    }


    public static void PrintPage(object sender, PrintPageEventArgs e)
    {
        Stream pageToPrint = m_Streams[m_CurrentPageIndex];
        pageToPrint.Position = 0;


        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);


            e.Graphics.FillRectangle(Brushes.White, adjustedRect);


            e.Graphics.DrawImage(pageMetaFile, adjustedRect);


            m_CurrentPageIndex++;
            e.HasMorePages = m_CurrentPageIndex < m_Streams.Count;
        }
    }

    public static void Print()
    {
        if (m_Streams == null || m_Streams.Count == 0)
            throw new Exception("Error: no stream to print.");
        PrintDocument printDoc = new PrintDocument();
        if (!printDoc.PrinterSettings.IsValid)
        {
            throw new Exception("Error: cannot find the default printer.");
        }
        else
        {
            printDoc.PrintPage += new PrintPageEventHandler(PrintPage);
            m_CurrentPageIndex = 0;
            printDoc.Print();
        }
    }

    public static void PrintToPrinter(this LocalReport report)
    {
        m_PageSettings = new PageSettings();
        ReportPageSettings reportPageSettings = report.GetDefaultPageSettings();

        m_PageSettings.PaperSize = reportPageSettings.PaperSize;
        m_PageSettings.Margins = reportPageSettings.Margins;

        Export(report);
    }

    public static void DisposePrint()
    {
        if (m_Streams != null)
        {
            foreach (Stream stream in m_Streams)
                stream.Close();
            m_Streams = null;
        }
    }

    private static string ToInches(int hundrethsOfInch)
    {
        double inches = hundrethsOfInch / 100.0;
        return inches.ToString(CultureInfo.InvariantCulture) + "in";
    }
}

我最初尝试使用PrintDialog进行打印（我希望此选项允许用户仍然可以选择打印机），但这根本不起作用，只是让我变得非常沮丧。我现在只是想尝试使用Print（）;

像我刚才所说的那样，我是新手，我迷失了。如果有人能帮助我，我将不胜感激。

C＃WinForms：报表中的数据不打印。

0 个答案: