适用于 Office 2007 的 Microsoft.Office.Interop.Excel

Question

我想尝试将办公文件（Excel、Word、Powerpoint）转换为 PDF 文件的 Windows 表单应用程序。 我客户的 PC 不会安装 Visual Studio，Office 版本是 2007。 我的应用程序使用Microsoft.Office.Iterop.Excel.dll 转换为 PDF 格式。 在我的客户电脑上找不到这个dll文件，出现如下错误。

System.AugumentException: Value does not fall within the expected range.
at Microsoft.Office.Interop.Excel._Workbook.ExportAsFixedFromat(.......)

我该如何解决这个问题？

我的代码如下

public bool ExportWorkbookToPdf(string workbookPath, string outputPath)
        {
            // If either required string is null or empty, stop and bail out
            if (string.IsNullOrEmpty(workbookPath) || string.IsNullOrEmpty(outputPath))
            {
                return false;
            }

            // Create COM Objects
            Microsoft.Office.Interop.Excel.Application excelApplication;
            Microsoft.Office.Interop.Excel.Workbook excelWorkbook;

            // Create new instance of Excel
            excelApplication = new Microsoft.Office.Interop.Excel.Application();

            // Make the process invisible to the user
            excelApplication.ScreenUpdating = false;

            // Make the process silent
            excelApplication.DisplayAlerts = false;

            // Open the workbook that you wish to export to PDF
            excelWorkbook = excelApplication.Workbooks.Open(workbookPath);

            MessageBox.Show(workbookPath);
            // If the workbook failed to open, stop, clean up, and bail out
            if (excelWorkbook == null)
            {
                excelApplication.Quit();

                excelApplication = null;
                excelWorkbook = null;
                MessageBox.Show("in null");
                return false;
            }

            var exportSuccessful = true;
            try
            {
                // Call Excel's native export function (valid in Office 2007 and Office 2010, AFAIK)
                excelWorkbook.ExportAsFixedFormat(Microsoft.Office.Interop.Excel.XlFixedFormatType.xlTypePDF, outputPath);
            }
            catch (System.Exception ex)
            {
                MessageBox.Show(ex.Message);
                // Mark the export as failed for the return value...
                exportSuccessful = false;

                // Do something with any exceptions here, if you wish...
                // MessageBox.Show...        
            }
            finally
            {
                // Close the workbook, quit the Excel, and clean up regardless of the results...
                excelWorkbook.Close();
                excelApplication.Quit();

                excelApplication = null;
                excelWorkbook = null;
            }

            // You can use the following method to automatically open the PDF after export if you wish
            // Make sure that the file actually exists first...
            if (System.IO.File.Exists(outputPath))
            {
                MessageBox.Show(outputPath);
                System.Diagnostics.Process.Start(outputPath);
            }

            return exportSuccessful;
        }

Answer 1

正如cmets中已经说过的，每个客户端都需要安装2007 Microsoft Office Add-in: Microsoft Save as PDF。无论您使用的是 Windows 8.1 还是安装了任何 PDF 阅读器都没有关系。您需要该插件才能使用 Office 2007 编写 PDF。（Office 2010 或 2013 不需要任何插件。）