使用 Interop 打印 Excel

Question

有人知道如何使用 C# 和 Excel Interop 以编程方式打印 excel 文件吗？ 如果是这样，你能提供代码吗？

Answer 1

为了打印，您可以使用Worksheet.PrintOut()方法。 您可以通过传入Type.Missing来省略任何或所有可选参数。 如果您省略所有这些，它将默认从您的活动打印机打印一份副本。 但是您可以使用参数来设置要打印的份数、整理等。有关更多信息，请参阅Worksheet.PrintOut()方法的帮助。

他们在帮助文件中显示的示例是：

private void PrintToFile()
{
    // Make sure the worksheet has some data before printing.
    this.Range["A1", missing].Value2 = "123";
    this.PrintOut(1, 2, 1, false, missing, true, false, missing);
}

但是除非您需要更改默认设置，否则您可以简单地为所有参数传入Type.Missing 。 以下是使用自动化打开 Excel 工作簿、打印第一页然后关闭的示例：

void PrintMyExcelFile()
{
    Excel.Application excelApp = new Excel.Application();

    // Open the Workbook:
    Excel.Workbook wb = excelApp.Workbooks.Open(
        @"C:\My Documents\Book1.xls",
        Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, 
        Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, 
        Type.Missing, Type.Missing,Type.Missing,Type.Missing);

    // Get the first worksheet.
    // (Excel uses base 1 indexing, not base 0.)
    Excel.Worksheet ws = (Excel.Worksheet)wb.Worksheets[1];

    // Print out 1 copy to the default printer:
    ws.PrintOut(
        Type.Missing, Type.Missing, Type.Missing, Type.Missing, 
        Type.Missing, Type.Missing, Type.Missing, Type.Missing);

    // Cleanup:
    GC.Collect();
    GC.WaitForPendingFinalizers();

    Marshal.FinalReleaseComObject(ws);

    wb.Close(false, Type.Missing, Type.Missing);
    Marshal.FinalReleaseComObject(wb);

    excelApp.Quit();
    Marshal.FinalReleaseComObject(excelApp);
}

希望这可以帮助！

麦克风

Answer 2

重要的改进是选择打印机的代码，例如：

var printers = System.Drawing.Printing.PrinterSettings.InstalledPrinters;

int printerIndex = 0;

foreach(String s in printers)
{
    if (s.Equals("Name of Printer"))
    {
        break;
    }
    printerIndex++;
}

xlWorkBook.PrintOut(Type.Missing, Type.Missing, Type.Missing, Type.Missing,printers[printerIndex], Type.Missing, Type.Missing, Type.Missing);

Answer 3

已经给出的所有答案都很好，但我只是想我让它更简单，有更多选项来显示对话框和定义打印页面的方向。

private void PrintExcel()
{
    string filePath = "C:\file\location\here\";
            Excel.Application excelApp = new Excel.Application();

    // Open Workbook:
    Excel.Workbook wb = excelApp.Workbooks.Open(filePath);

    // Define the orientation for the page
    ((Excel._Worksheet)wb.ActiveSheet).PageSetup.Orientation = Excel.XlPageOrientation.xlLandscape;

    //Decide which worksheet to print
    Excel.Worksheet ws = (Excel.Worksheet)wb.Worksheets[1];

    // Option to print with or to show dialogue box
    bool userDidntCancel = excelApp.Dialogs[Excel.XlBuiltInDialog.xlDialogPrint].Show();

    // Option to print out wihtout the dialogue box. 
    // WARNING: Do not use Dialogue option and this at the same time. 
    // It will print the page even if you cancel the dialogue print option.
    ws.PrintOut();

    // Cleanup your code
    GC.Collect();
    GC.WaitForPendingFinalizers();

    Marshal.FinalReleaseComObject(ws);

    wb.Close(false, Type.Missing, Type.Missing);
    Marshal.FinalReleaseComObject(wb);

    // Close/Exit File
    excelApp.Quit();
    Marshal.FinalReleaseComObject(excelApp);

}

我希望这对某人有所帮助。 :D