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IO from a mapped file vs IO using filestreams


IO from a mapped file vs IO using filestreams

By : Renée Fortier
Date : November 21 2020, 09:01 AM
this one helps. (Disclaimer: I am the author of proposed Boost.AFIO)
code :


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Using C++ filestreams (fstream), how can you determine the size of a file?

Using C++ filestreams (fstream), how can you determine the size of a file?


By : maro
Date : March 29 2020, 07:55 AM
this will help You can open the file using the ios::ate flag (and ios::binary flag), so the tellg() function will give you directly the file size:
code :
ifstream file( "example.txt", ios::binary | ios::ate);
return file.tellg();
how to close all FileStreams related to specific file?

how to close all FileStreams related to specific file?


By : Tanu Gupta
Date : March 29 2020, 07:55 AM
Proper disposal of filestreams and binary streams and disposing of filestreams

Proper disposal of filestreams and binary streams and disposing of filestreams


By : fajolena
Date : March 29 2020, 07:55 AM
Any of those help How about making use of the using keyword? this wraps your use of an IDisposable in a try - finally block;
code :
bool success = true;

using(var fs = new FileStream(fileName, FileMode.Create)))
using(var br = new BinaryReader(fs))
{
  // do something
  success = result;
}

return success;
Having some trouble to delete a file using FileStreams in C#

Having some trouble to delete a file using FileStreams in C#


By : user3526977
Date : March 29 2020, 07:55 AM
around this issue Your File.Delete(m_path); will never be called, because you get an exception here:
code :
private void closeStreams() {
    if (m_streamOpen) {
        m_fs.Close();
        m_reader.Close();
        m_writer.Close(); // throws an exception here

        m_streamOpen = false;
    }
}
m_writer.Close();
m_reader.Close();
m_fs.Close();
using (FileStream fs = new FileStream(m_path, FileMode.OpenOrCreate, FileAccess.ReadWrite, FileShare.None))
using (StreamReader reader = new StreamReader(fs))
using (StreamWriter writer = new StreamWriter(fs))
{
  // so some work here

}

File.Delete(m_path);
Can't create a file in the server with Filestreams .NET

Can't create a file in the server with Filestreams .NET


By : H.Sedan
Date : March 29 2020, 07:55 AM
Any of those help You should give write Permission to your IIS application pool, so your application can write file on directory. On local, application has this permission by default but on server you should give this permission manually.
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