LocalReport回执打印

Question

我正在使用带有"Walkthrough: Printing a Local Report without Preview“代码的LocalReport打印一张3英寸的收据。

有些打印机要求DeviceInfo PageWidth为8.5英寸才能正常工作，有些打印机则需要3.0英寸。报告似乎正在被拉伸，以填充错误大小的页面。我已尝试调整报告纸张大小和打印机纸张大小，但似乎无法获得正确的组合。

有没有人经历过这种情况？

Answer 1

我想通了。您需要考虑打印机的dpi。

获取打印机默认页面设置：

        PrinterSettings ps = new PrinterSettings();
        ps.PrinterName = printerName;
        this.defaultPageSettings = ps.DefaultPageSettings;

使用该信息构建DeviceInfo Xml：

    private string BuildDeviceInfo()
    {
        StringBuilder returnValue;
        System.Xml.XmlWriter writer;

        returnValue = new StringBuilder(1024);
        writer = System.Xml.XmlWriter.Create(returnValue);

        writer.WriteStartElement("DeviceInfo");
        writer.WriteElementString("OutputFormat", "EMF");

        if (defaultPageSettings != null)
        {
            // DPI will keep the output from scaling in weird ways
            writer.WriteElementString("PrintDpiX", defaultPageSettings.PrinterResolution.X.ToString());
            writer.WriteElementString("PrintDpiY", defaultPageSettings.PrinterResolution.Y.ToString());

            writer.WriteElementString("PageWidth", (defaultPageSettings.PaperSize.Width / 100m).ToString("F2") + "in");
            writer.WriteElementString("PageHeight", (defaultPageSettings.PaperSize.Height / 100m).ToString("F2") + "in");
       }
        writer.Close();

        return returnValue.ToString();
    }

Answer 2

这对我很有效。我正在从WPF应用程序打印到STAR TSP100收据打印机。当我自己设置页边距和页面大小时，结果很大，但当我计算最小页边距和页面大小，并从默认打印机设置中设置dpi时，收据打印正确。

我用这个来计算出最小边距：(H/T http://www.dreamincode.net/forums/topic/135864-printing-with-minimum-margins-specified-by-the-printer/)

Dim minimumMarginLeft, minimumMarginRight, minimumMarginTop,
 minimumMarginBottom As Single

minimumMarginLeft = PrintDialog1.PrinterSettings.DefaultPageSettings.PrintableArea.Left

minimumMarginRight = PrintDialog1.PrinterSettings.DefaultPageSettings.PaperSize.Width - _
                                  PrintDialog1.PrinterSettings.DefaultPageSettings.PrintableArea.Right

minimumMarginTop = PrintDialog1.PrinterSettings.DefaultPageSettings.PrintableArea.Top

minimumMarginBottom =  PrintDialog1.PrinterSettings.DefaultPageSettings.PaperSize.Height - _
                                      PrintDialog1.PrinterSettings.DefaultPageSettings.PrintableArea.Bottom


-I figured this out. You need to account for the printer dpi.

-Get the Printer Default Page Settings:

        PrinterSettings ps = new PrinterSettings();
        ps.PrinterName = printerName;
        this.defaultPageSettings = ps.DefaultPageSettings; The Build the DeviceInfo Xml with that info:

    private string BuildDeviceInfo()
    {
        StringBuilder returnValue;
        System.Xml.XmlWriter writer;

        returnValue = new StringBuilder(1024);
        writer = System.Xml.XmlWriter.Create(returnValue);

        writer.WriteStartElement("DeviceInfo");
        writer.WriteElementString("OutputFormat", "EMF");

        if (defaultPageSettings != null)
        {
            // DPI will keep the output from scaling in weird ways
            writer.WriteElementString("PrintDpiX", defaultPageSettings.PrinterResolution.X.ToString());
            writer.WriteElementString("PrintDpiY", defaultPageSettings.PrinterResolution.Y.ToString());

            writer.WriteElementString("PageWidth", (defaultPageSettings.PaperSize.Width / 100m).ToString("F2") + "in");
            writer.WriteElementString("PageHeight", (defaultPageSettings.PaperSize.Height / 100m).ToString("F2") + "in");
       }
        writer.Close();

        return returnValue.ToString();
    }