基于RDLC实现POS打印机动态高度静默打印的技术咨询

我需要一种无需预先知晓打印高度即可在POS打印机上打印的方案。目前已实现通过树视图元素动态填充RDLC报表，接下来要实现静默打印，这部分存在难点。当前报表尺寸设为POS默认尺寸（80mm至3276mm），我的思路是先设置初始高度（需测试最优值），再根据报表聚合的项数累加高度，具体实现代码如下：

double paperWidthMm = report_imprime_comanda.LocalReport.GetDefaultPageSettings().PaperSize.Width;
double totalHeight = 30;

foreach (TreeNode parentNode in parentNodes)
{
    if (parentNode.Tag is Comanda comandaMain)
    {
        double itemHeight = GetItemHeight(comandaMain);
        totalHeight += itemHeight;
        filteredComandas.Add(comandaMain);
    }
}

// Dynamically set the page height based on total content height
int paperWidthHundredthsOfInch = (int)(paperWidthMm / 25.4 * 100);
int paperHeightHundredthsOfInch = (int)(totalHeight / 25.4 * 100);

PageSettings pageSettings = new PageSettings
{
    PaperSize = new PaperSize("Custom", paperWidthHundredthsOfInch, paperHeightHundredthsOfInch)
};

MessageBox.Show("Paper Size: " + pageSettings, "Tamaño papel", MessageBoxButtons.OK, MessageBoxIcon.Warning);
report_imprime_comanda.SetPageSettings(pageSettings);

// Bind filtered data to the report
report_imprime_comanda.LocalReport.DataSources.Clear();
report_imprime_comanda.LocalReport.DataSources.Add(new ReportDataSource("Comandas", filteredComandas));

// Refresh the report to apply the changes
report_imprime_comanda.RefreshReport();
PrintPOS printPOS = new PrintPOS();
// Render and print the report
printPOS.PrintReportToPrinter(report_imprime_comanda.LocalReport, printerName);

以下是根据元素计算报表高度的函数：

private double GetItemHeight(Comanda item)
{
    // Base height for each comanda item
    double baseHeight = 30;

    // Additional height for each child note
    double noteHeight = 15;

    // Calculate total height
    double totalHeight = baseHeight;

    // Split the notes by ';' to count them
    if (!string.IsNullOrEmpty(item.NOTAS))
    {
        string[] notes = item.NOTAS.Split(';');
        totalHeight += notes.Length * noteHeight;
    }

    return totalHeight;
}

这是执行实际打印操作的函数：

public void PrintReportToPrinter(LocalReport report, string printerName)
{
    // Configure print settings for the POS printer
    PrinterSettings printerSettings = new PrinterSettings
    {
        PrinterName = printerName,
        Copies = 1,
        PrintToFile = false,
    };

    // Create a PrintDocument object
    PrintDocument printDoc = new PrintDocument
    {
        PrinterSettings = printerSettings
    };

    printDoc.PrintPage += (sender, args) =>
    {
        // Render the report to an image
        Warning[] warnings;
        string[] streamIds;
        string mimeType;
        string encoding;
        string extension;

        byte[] bytes = report.Render(
            "Image", null, out mimeType, out encoding, out extension,
            out streamIds, out warnings);

        using (System.Drawing.Image image = System.Drawing.Image.FromStream(new System.IO.MemoryStream(bytes)))
        {
            args.Graphics.DrawImage(image, args.MarginBounds);
            args.HasMorePages = false;
        }
    };

    // Print the document
    printDoc.Print();
}

请问是否存在更简便的实现方式？我期望能直接将动态数据打印到POS打印机，恳请提供帮助，谢谢！

内容的提问来源于stack exchange，提问作者Juan Manuel Sanchez Cuellar