C#中的Office应用程序word

Question

我试着从几个word文档中创建很多PDF文档。不幸的是，我无法关闭/清理(垃圾收集)。因此内存消耗大量，最终程序转储。

这是我的密码。我希望你们聪明的人能引导我找到解决方案。

//**************************************************************
// Please notice:
//
// this.Files is an array with filepath and filenames e.g.:
// {"x:\doc\doc1.doc", "x:\doc\doc2.doc",...,"x:\doc\docn.doc"}.
//
// Please notice:
//**************************************************************


public void wordToPDF() {

    string LS_fileName = "";
    string LS_fileExtension = "";
    string LS_PDF = ".pdf";

    try
    {
        foreach (string Filename in this.Files)
        {
            LS_fileName = Path.GetFileName( Filename );
            if (Path.GetExtension( Filename ) == ".doc" || Path.GetExtension( Filename ) == ".docx")
            { 
                // Convert to PDF:
                Microsoft.Office.Interop.Word.Application appWord = new Microsoft.Office.Interop.Word.Application();
                wordDocument = appWord.Documents.Open(GlobalVar.TempFiles + LS_fileName);
                LS_fileExtension = Path.GetExtension(Filename);

                LS_fileName = LS_fileName.Replace( LS_fileExtension, LS_PDF );                  int i = 0;
                foreach (string value in this.Files)
                {
                    if (value == Filename)
                    {
                         this.Files[i] = this.Files[i].Replace(LS_fileExtension, LS_PDF);
                         break;
                    }
                    i++;
                }
                wordDocument.ExportAsFixedFormat(GlobalVar.TempFiles + LS_fileName, MSWORD.WdExportFormat.wdExportFormatPDF);
                System.Runtime.InteropServices.Marshal.ReleaseComObject(appWord);
            }
        }
    }
    catch (Exception ex)
    {
        Console.WriteLine("getFiles Hello I must be going.");
    }
}
}

//更新1：

public void wordToPDF() {

    string LS_fileName = "";
    string LS_fileExtension = "";
    string LS_PDF = ".pdf";
    int i = 0;

    MSWORD.Application appWord = new MSWORD.Application();

    try
    {
        foreach (string Filename in this.Files)
            {
                LS_fileName = Path.GetFileName( Filename );
                    if (Path.GetExtension( Filename ) == ".doc" || Path.GetExtension( Filename ) == ".docx")
                    { 
                        // Convert to PDF:
                        wordDocument = appWord.Documents.Open(GlobalVar.TempFiles + LS_fileName);
                        LS_fileExtension = Path.GetExtension(Filename);

                        LS_fileName = LS_fileName.Replace( LS_fileExtension, LS_PDF );
                        i = 0;
                        foreach (string value in this.Files)
                        {
                            if (value == Filename)
                            {
                               this.Files[i] = this.Files[i].Replace(LS_fileExtension, LS_PDF);
                                break;
                            }
                            i++;
                            }
                            wordDocument.ExportAsFixedFormat(GlobalVar.TempFiles + LS_fileName, MSWORD.WdExportFormat.wdExportFormatPDF);
                    }
    }
}
    catch (Exception ex)
    {
        Console.WriteLine("getFiles Hello I must be going.");
        System.Runtime.InteropServices.Marshal.ReleaseComObject(appWord);
    wordDocument.Close();
    if (appWord != null)
    {
        appWord.Quit();
        appWord = null;
        GC.Collect();
        GC.WaitForPendingFinalizers();
        GC.Collect();
        GC.WaitForPendingFinalizers();
    }
}
    System.Runtime.InteropServices.Marshal.ReleaseComObject(appWord);
wordDocument.Close();
    if (appWord != null)
    {
        appWord.Quit();
        appWord = null;
        GC.Collect();
        GC.WaitForPendingFinalizers();
        GC.Collect();
        GC.WaitForPendingFinalizers();
    }
}

//更新2：

public void wordToPDF() 
{

    string LS_fileName = "";
    string LS_fileExtension = "";
    string LS_PDF = ".pdf";
    object missingType = Type.Missing;
    object SaveChanges = Type.Missing;
    object OriginalFormat = Type.Missing;
    object RouteDocument = Type.Missing;

    MSWORD.Application appWord = new MSWORD.Application();

    try
    {
        foreach (string Filename in this.Files)
            {
                LS_fileName = Path.GetFileName( Filename );
                    if (Path.GetExtension( Filename ) == ".doc" || Path.GetExtension( Filename ) == ".docx")
                    { 
                            // Convert to PDF:
            wordDocument = appWord.Documents.Open(GlobalVar.TempFiles + LS_fileName);
                            LS_fileExtension = Path.GetExtension(Filename);

                            LS_fileName = LS_fileName.Replace( LS_fileExtension, LS_PDF );
                            int i = 0;
                            foreach (string value in this.Files)
                            {
                                if (value == Filename)
                                {
                                    this.Files[i] = this.Files[i].Replace(LS_fileExtension, LS_PDF);
                                    break;
                                }
                                i++;
                            }
                            wordDocument.ExportAsFixedFormat(GlobalVar.TempFiles + LS_fileName, MSWORD.WdExportFormat.wdExportFormatPDF);

                            wordDocument.Close();
                    }
                }
    }
            catch (Exception ex)
            {
                Console.WriteLine("getFiles Hello I must be going.");
                System.Runtime.InteropServices.Marshal.ReleaseComObject(appWord);

                if (appWord != null)
                {
                    appWord.Quit();
                    appWord = null;
                    GC.Collect();
                    GC.WaitForPendingFinalizers();
                    GC.Collect();
                    GC.WaitForPendingFinalizers();
                }
            }
            System.Runtime.InteropServices.Marshal.ReleaseComObject(appWord);

            appWord.Quit(ref object SaveChanges = Type.Missing, ref object OriginalFormat);
            if (appWord != null)
            {
                appWord = null;
                GC.Collect();
                GC.WaitForPendingFinalizers();
                GC.Collect();
                GC.WaitForPendingFinalizers();
        }
    }
}

Answer 1

显然，退出winword应用程序不起作用。Hense应用了一种更基本的解决方案：

Process[] processes = Process.GetProcessesByName("winword");
foreach (var process in processes)
{
    try
    {
        process.Kill();
    }
    catch (Exception)
    {
    // handle the exception...                    
    }

}
// That solved the problem.
// Thanks for your help :-).

Answer 2

1)试着把这条线移出你的回路。(foreach (string Filename in this.Files))

 Microsoft.Office.Interop.Word.Application appWord = new Microsoft.Office.Interop.Word.Application();

2)在循环结束时关闭所有Documents (foreach (string Filename in this.Files))，这将关闭所有Word窗口，或者您可以保存保存文档的链接并关闭它。

编辑：

foreach (string Filename in this.Files)
        {
            LS_fileName = Path.GetFileName( Filename );
                if (Path.GetExtension( Filename ) == ".doc" || Path.GetExtension( Filename ) == ".docx")
                { 
                    // Convert to PDF:
                    wordDocument = appWord.Documents.Open(GlobalVar.TempFiles + LS_fileName);
                    LS_fileExtension = Path.GetExtension(Filename);

                    LS_fileName = LS_fileName.Replace( LS_fileExtension, LS_PDF );
                    i = 0;
                    foreach (string value in this.Files)
                    {
                        if (value == Filename)
                        {
                           this.Files[i] = this.Files[i].Replace(LS_fileExtension, LS_PDF);
                            break;
                        }
                        i++;
                        }
                        wordDocument.ExportAsFixedFormat(GlobalVar.TempFiles + LS_fileName, MSWORD.WdExportFormat.wdExportFormatPDF);
                       wordDocument.Close(missing, missing, missing);
                }
}

描述:由于word模型，word是一个只有一个主体Microsoft.Office.Interop.Word.Application的应用程序--它包含所有在运行时打开的文档，这些文档看起来像一个独立的应用程序(windows)，但它们不是。

Answer 3

确保在释放COM对象之前关闭文档和应用程序，然后释放并可能强制使用GC.Collect()。

编辑:如果您多次使用word，只要启动word一次并打开文件进行pdf导出，然后逐个关闭即可。最后关闭wordApp。

Edit2:每次启动内环时，都应该将i重置为0。