如何检查文件是否在C＃中使用？ [英] How to check if file is in use in c#?

问题描述

如何检查我正在使用的excel文件（操作其数据，删除它或覆盖它）是否被另一个程序使用？如何从相同的版本发布？

请指导我使用C＃。

解决方案试图打开与标志写作。如果失败，文件被其他进程占用。

  FileStream fileStream = null; 
 $ b $ try 
 {
 fileStream = 
 FileStream（@c：\file.txt，FileMode.Open，FileAccess.Write）; 
 
 catch（UnauthorizedAccessException e）
 {
 //所请求的访问不被操作系统
 //允许用于指定的路径，比如访问时是Write或ReadWrite 
 //并将文件或目录设置为只读访问。 
} 
 finally 
 {
 if（fileStream！= null）
 fileStream.Close（）; 
} 
  

刚刚发现一个非常类似的问题，基本上是一样的答案：

How can I check if the excel file on which I am working (manipulating its data, deleting it or overwriting it) is in use by another program? And how to release it from the same?

Please guide me using C#.

解决方案

Attempt to open in with flags "for writing". If it fails, the file is "taken" by some other process.

FileStream fileStream = null;

try
{
    fileStream =
        new FileStream(@"c:\file.txt", FileMode.Open, FileAccess.Write);
}
catch (UnauthorizedAccessException e)
{
    // The access requested is not permitted by the operating system
    // for the specified path, such as when access is Write or ReadWrite
    // and the file or directory is set for read-only access. 
}
finally
{
    if (fileStream != null)
        fileStream.Close ();
}

P.S. Just found a very similar question with basically the same answer:

C#: Is there a way to check if a file is in use?

这篇关于如何检查文件是否在C＃中使用？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！