C# 以只读模式使用OpenXML打开锁定的文件

当我尝试打开锁定的文件时，如下所示：

using DocumentFormat.OpenXml;
using DocumentFormat.OpenXml.Packaging;
using DocumentFormat.OpenXml.Spreadsheet;

... code stripped for clarity ...
// false stands for read only mode
spreadsheetDocument_ = SpreadsheetDocument.Open(fileName_, false);

我得到一个例外：

System.IO.IOException: 'The process cannot access the file 'file.xlsx' because it is being used by another process.'

完整堆栈跟踪：

System.IO.IOException
  HResult=0x80070020
  Message=The process cannot access the file 'file.xlsx' because it is being used by another process.
  Source=mscorlib
  StackTrace:
   at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
   at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy, Boolean useLongPath, Boolean checkHost)
   at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, FileOptions options, String msgPath, Boolean bFromProxy)
   at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, Boolean useAsync)
   at MS.Internal.IO.Zip.ZipArchive.OpenOnFile(String path, FileMode mode, FileAccess access, FileShare share, Boolean streaming)
   at System.IO.Packaging.ZipPackage..ctor(String path, FileMode mode, FileAccess access, FileShare share, Boolean streaming)
   at System.IO.Packaging.Package.Open(String path, FileMode packageMode, FileAccess packageAccess, FileShare packageShare, Boolean streaming)
   at DocumentFormat.OpenXml.Packaging.OpenXmlPackage.OpenCore(String path, Boolean readWriteMode)
   at DocumentFormat.OpenXml.Packaging.SpreadsheetDocument.Open(String path, Boolean isEditable, OpenSettings openSettings)
   at DocumentFormat.OpenXml.Packaging.SpreadsheetDocument.Open(String path, Boolean isEditable)

---

如何以只读模式打开文件并忽略锁定标志？如果文件未在其他程序中打开，我还希望避免创建锁定标志，以便可以进一步编辑该文件。

尝试传递流而不是字符串（文件路径）。还可以使用文件流类打开Excel文件

控制台应用程序代码段：

  static void Main(string[] args)
    {
        using (var fileStream = new FileStream(@"path", FileMode.Open,FileAccess.Read, FileShare.ReadWrite))
        {
            using (var spreadSheetDocument = SpreadsheetDocument.Open(fileStream, false))
            {
                //Implementation
            }
        }
    }

---

源：

尝试传递流而不是字符串（文件路径）。还可以使用文件流类打开Excel文件

控制台应用程序代码段：

  static void Main(string[] args)
    {
        using (var fileStream = new FileStream(@"path", FileMode.Open,FileAccess.Read, FileShare.ReadWrite))
        {
            using (var spreadSheetDocument = SpreadsheetDocument.Open(fileStream, false))
            {
                //Implementation
            }
        }
    }

---

来源：

您不能忽略锁，但可以尝试以与锁兼容的模式打开文件。虽然并非所有锁都与读取兼容，但如果这样的锁已到位，您就无能为力。您不能忽略该锁，但可以尝试以与锁定兼容的模式打开文件。虽然并不是所有的锁都与读取兼容，但如果这样的锁已经到位，您就无能为力了。