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Jan 11, 2019 · Use a bool value and set it to false if an exception is thrown when trying to open the file. Example: string path = "Your Path"; bool available = true; try { using (FileStream fs = File.Open(path, FileMode.Open)) { } } catch(Exception ex) { available = false; }

06.06.2010 · If you mean that you want to check if a file is open before you try to open it, then no. (At least not without going low level and examine every file handle that is open in the system.) Besides, the information would be old when you get it.

C#. Copy Code. try { using(FileStream fs = File.OpenWrite(strFileName) { if(fs == null) return; } } catch(UnauthorizedAccessException e) ...

If you want to know whether your application already had the file open, you should just save the FileStream in a field, and reset the field ...

The other main task will be to check whether the file is an existing file or not before going to open it . This is the classical way of opening an existing ...

Open a text file for input. ifstream input_file_object( "filename.txt" ) ; Open a ... ios::app ) ; Check if file opened successfully if ( file_object.fail() ) ...

18.07.2013 · There is no such function for a file in general. It really depends upon what you are trying to do. If, for example, you want to open a file just once then you'll be using a stream. The existence of the stream instance (meaning not null) is generally indicative that it is open because of how you will scope it.

There is no such function for a file in general. It really depends upon what you are trying to do. If, for example, you want to open a file just ...

Jul 18, 2013 · Hi, As the user replied, it requires file stream to check file it is opened or not. If you need a function and if you want to use that function many places, create some static function with filestream and check file is opened or not. Please find the below link for your reference, http://stackoverflow.com/questions/2987559/check-if-a-file-is-open. Balaji -Please click mark as answer if my reply solves your problem.

01.07.2010 · This is not especially nice - we'll try and open the file and examine the exception if it fails. I'm not sure you have any other choices in C#. However, it is important to only handle the correct exception: Basically we try open the file with no sharing allowed.

File is a static class that provides different functionalities like copy, create, move, delete, open for reading or /writing, encrypt or decrypt, check if a ...

12.11.2012 · c# checking if a file is already open. Please Sign up or sign in to vote. 0.00/5 (No votes) See more: C#. Can someone help me and show me a way of checking if a file is open such that i don't open the same file that is open...may be display a notification that the file is already open. Am ...

This is the mode in which the file is opened by default when using the ifstream class. ... How can we check if opening of the file succeeded or failed?

02.04.2013 · c# check if file is open. Ask Question Asked 8 years, 9 months ago. Active 8 years, 9 months ago. Viewed 9k times 3 I need to verify if specific file is open to prevent the copy of that file. I try lot of examples but any doesn't work! I try, for example, this: ...

You can use the ftell() function for this. ... is open. It returns a negative if stream is closed. FILE *stream; stream = fopen("somefile", "r") ...

1 8 0 ) BESREBUERR1111101010 If you don't check your invoices ; if you use ... the larger completed orders ; an " open " active file it up once and see if ...

Jun 07, 2010 · public bool IsFileInUse (string path) { if (string.IsNullOrEmpty (path)) throw new ArgumentException ("'path' cannot be null or empty.", "path"); try { using (var stream = new FileStream (path, FileMode.Open, FileAccess.Read)) { } } catch (IOException) { return true; } return false; } Show activity on this post.

Nov 13, 2012 · protected virtual bool IsFileinUse(FileInfo file) { FileStream stream = null; try { stream = file.Open(FileMode.Open, FileAccess.ReadWrite, FileShare.None); } catch (IOException) { // the file is unavailable because it is: // still being written to // or being processed by another thread // or does not exist (has already been processed) return true; } finally { if (stream != null) stream.Close(); } return false; }

Apr 02, 2013 · If you want to know whether your application already had the file open, you should just save the FileStream in a field, and reset the field to null when you close the stream. Then you can simply test and get the FileStream of the file.