File IO speed problem

[Cyrus]

I always find that when there is a write operation immediately after the
read operation, it throws this exception

An unhandled exception of type 'System.IO.IOException' occurred in
mscorlib.dll
Additional information: The process cannot access the file
"D:\Projects\pro.dat" because it is being used by another process.

how to solve this problem

 

[Jon Skeet [C# MVP]]

I always find that when there is a write operation immediately after the
read operation, it throws this exception

An unhandled exception of type 'System.IO.IOException' occurred in
mscorlib.dll
Additional information: The process cannot access the file
"D:\Projects\pro.dat" because it is being used by another process.

how to solve this problem

Have you closed the reading stream before you start writing again?

 

[Herfried K. Wagner [MVP]]

I always find that when there is a write operation immediately after the
read operation, it throws this exception

An unhandled exception of type 'System.IO.IOException' occurred in
mscorlib.dll
Additional information: The process cannot access the file
"D:\Projects\pro.dat" because it is being used by another process.

how to solve this problem

Post your code.

--
Herfried K. Wagner
MVP · VB Classic, VB.NET
<http://www.mvps.org/dotnet>

<http://www.plig.net/nnq/nquote.html>

 

[~cch~]

i use streamreader and streamwriter
i did close them.

 

[Herfried K. Wagner [MVP]]

i use streamreader and streamwriter
i did close them.

Post the code snippet you use to perform the operation.

--
Herfried K. Wagner
MVP · VB Classic, VB.NET
<http://www.mvps.org/dotnet>

<http://www.plig.net/nnq/nquote.html>

 

[Cyrus]

StreamReader sr = new
StreamReader(File.OpenRead(Environment.CurrentDirectory + "\\Inipro.dat"));
// StreamReader sr = new StreamReader(keyFile.OpenRead());

if (sr.ReadLine() != null)
{
prodCode = this.Decode(sr.ReadLine());
actCode = this.Decode(sr.ReadLine());
pass = VerifyActCode();
}
sr.Close();

UnicodeEncoding byteConverter = new UnicodeEncoding();
// StreamWriter sw = new StreamWriter(keyFile.OpenWrite());
StreamWriter sw = new
StreamWriter(File.OpenWrite(Environment.CurrentDirectory + "\\Inipro.dat"));

sw.WriteLine(byteConverter.GetString(this.GetRandomBytes()));
sw.WriteLine(this.Encode(prodCode));
sw.WriteLine(this.Encode(actCode));
sw.Flush();
sw.Close();

 

[Cyrus]

even i close the filestream after closing the streamwriter
the error still happen....

 

[Cyrus]

sorry i solved...

StreamReader sr = new
StreamReader(File.OpenRead(Environment.CurrentDirectory + "\\Inipro.dat"));
// StreamReader sr = new StreamReader(keyFile.OpenRead());

if (sr.ReadLine() != null)
{
prodCode = this.Decode(sr.ReadLine());
actCode = this.Decode(sr.ReadLine());
pass = VerifyActCode();
}
sr.Close();

UnicodeEncoding byteConverter = new UnicodeEncoding();
// StreamWriter sw = new StreamWriter(keyFile.OpenWrite());
StreamWriter sw = new
StreamWriter(File.OpenWrite(Environment.CurrentDirectory + "\\Inipro.dat"));

sw.WriteLine(byteConverter.GetString(this.GetRandomBytes()));
sw.WriteLine(this.Encode(prodCode));
sw.WriteLine(this.Encode(actCode));
sw.Flush();
sw.Close();

 

[Jon Skeet [C# MVP]]

sorry i solved...

And what was the solution? If you don't tell us, no-one else can learn
from your experience

 

[cyrus]

just silly mistake

And what was the solution? If you don't tell us, no-one else can learn
from your experience

 

[Eric Newton]

....and the solution WAS?


--
Eric Newton
C#/ASP Application Developer
(e-mail address removed)-software.com [remove the first "CC."]

just silly mistake