create a new file with exclusive owner mode

Hello everyone,


I did some research for File.Create API to find some option which could be used to create a new file, with exclusive owner mode (e.g. other process/thread can not delete/open/modify when current thread keep the file open). But can not find it out.

Could anyone let me know which option should I use or which API should I use?


thanks in advance,
George

Code:

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FileStream newFile = File.Open("newfile.txt", FileMode.CreateNew, FileAccess.ReadWrite, FileShare.None);

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It's the FileShare.None that prohibits any other process (or even other attempts to open it within the same process) from getting access to the file.

Considering the fact that this info is available just one click from the MSDN page about the File class, maybe you should spend more time learning how to look things up instead of learning C/C++ or C#. In the end, it will be a tremendous help learning ANY language.

Thanks Cat,


I have found it out. I think I need to FileStream.Close(), or else other thread/process can not use it?

Quote:

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Originally Posted by Cat

Code:

---

FileStream newFile = File.Open("newfile.txt", FileMode.CreateNew, FileAccess.ReadWrite, FileShare.None);

---

It's the FileShare.None that prohibits any other process (or even other attempts to open it within the same process) from getting access to the file.

---

regards,
George

Yes, you can .Close(), or you could put all access inside a using statement, like:

Code:

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using (FileStream newFile = File.Open("newfile.txt", FileMode.CreateNew, FileAccess.ReadWrite, FileShare.None))
{
// Use the file here
}

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Also you could do nothing and just wait until newFile gets garbage collected, but that only happens when the garbage collector decides to do it (which could be right after the last pointer is destroyed, or it could be much, much later).

Thanks Cat,


Question answered. Cool!!

Quote:

---

Originally Posted by Cat

Yes, you can .Close(), or you could put all access inside a using statement, like:

Code:

---

using (FileStream newFile = File.Open("newfile.txt", FileMode.CreateNew, FileAccess.ReadWrite, FileShare.None))
{
// Use the file here
}

---

Also you could do nothing and just wait until newFile gets garbage collected, but that only happens when the garbage collector decides to do it (which could be right after the last pointer is destroyed, or it could be much, much later).

---

regards,
George