473,685 Members | 3,008 Online
Bytes | Software Development & Data Engineering Community
+ Post

Home Posts Topics Members FAQ

if System.IO.Strea mWriter write throws an exception, is there anyway to close the System.IO.Strea mWriter object? it seems to stay open when this happens then future attempts to write to that same path fail because it says its in use by another proces

if System.IO.Strea mWriter write throws an exception, is there anyway to
close the System.IO.Strea mWriter object? it seems to stay open when this
happens then future attempts to write to that same path fail because it says
its in use by another process.
Nov 12 '05 #1
2 2940
Daniel wrote:
if System.IO.Strea mWriter write throws an exception, is there anyway to
close the System.IO.Strea mWriter object? it seems to stay open when this
happens then future attempts to write to that same path fail because it says
its in use by another process.


The finally-block has been invented for this (untested):

StreamWriter w;
try {
w = new StreamWriter(nu ll);
// 1. an exception is thrown
}
catch {
Debug.WriteLine ("!");
// 2. you handle it
}
finally {
/* 3. you clean up behind you, no matter if the exception was thrown
or not! */
if( w != null ){
w.Close();
w = null;
}
}
--
Pascal Schmitt
Nov 12 '05 #2
If my System.IO.Strea mWriter Write method throws "The specified network name
is no longer available." and I try to Dispose or Close it in the finaly
clause the close or dispose method just throws "The specified network name
is no longer available." again. how to clean this up? after this the stream
writer is stuck connected until i restart my process.

"Pascal Schmitt" <ne*******@cebr a.nu> wrote in message
news:en******** ********@TK2MSF TNGP12.phx.gbl. ..
Daniel wrote:
if System.IO.Strea mWriter write throws an exception, is there anyway to
close the System.IO.Strea mWriter object? it seems to stay open when this
happens then future attempts to write to that same path fail because it says its in use by another process.


The finally-block has been invented for this (untested):

StreamWriter w;
try {
w = new StreamWriter(nu ll);
// 1. an exception is thrown
}
catch {
Debug.WriteLine ("!");
// 2. you handle it
}
finally {
/* 3. you clean up behind you, no matter if the exception was thrown
or not! */
if( w != null ){
w.Close();
w = null;
}
}
--
Pascal Schmitt

Nov 12 '05 #3

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

13
9618
by: Stumped and Confused | last post by:
Hello, I really, really, need some help here - I've spent hours trying to find a solution. In a nutshell, I'm trying to have a user input a value in form's textfield. The value should then be assigned to a variable and output using document.write. (Note, there is no submit button or other form elements. Basically
3
419
by: Daniel | last post by:
if System.IO.StreamWriter write throws an exception, is there anyway to close the System.IO.StreamWriter object? it seems to stay open when this happens then future attempts to write to that same path fail because it says its in use by another process.
4
4221
by: Bhavya Shah | last post by:
Hello, I am facing a very strange problem in my application. I have a form on which I select a path. I open the FolderBrowserDialog for path selection. Once the path is selected I press a button "Search" for searching documents on that path. This search process runs in a separate thread so that I can search for multiple paths simultaneously. I face problem here. After starting the search for one path (that is starting one thread), when I...
9
4586
by: ShadowOfTheBeast | last post by:
Hi, I have got a major headache understanding streamReader and streamWriter relationship. I know how to use the streamreader and streamwriter independently. but how do you write out using the streamwriter, what you have read into a streamReader? and also can someone explain how they work in simple terms -- The Matrix Insurrection
1
5512
by: Daniel | last post by:
If my System.IO.StreamWriter Write method throws "The specified network name is no longer available." and I try to Dispose or Close it in the finaly clause the close or dispose method just throws "The specified network name is no longer available." again. how to clean this up? after this the stream writer is stuck connected until i restart my process.
6
13288
by: A.M-SG | last post by:
Hi, I have an aspx page at the web server that provides PDF documents for smart client applications. Here is the code in aspx page that defines content type: Response.ContentType = "application/octet-stream"; Response.AppendHeader("Content-Disposition", "attachment;filename=" + fileID.ToString() + ".pdf");
6
10210
by: Don | last post by:
I'm having problems working with a streamwriter object. After closing the streamwriter and setting it to Nothing, I try to delete the file it was writing to, but I always get the following error message: "The process cannot access the file "whatever" because it is being used by another process." I've even tried opening another file using the same streamwriter object before deleting the original file, but it's no use. Something keeps...
7
11087
by: Mark Rae | last post by:
Hi, Has anyone successfully used the FTP stuff in the System.Net namespace against a VMS FTP server? I'm trying to do this at the moment and can't even get a directory listing, although there are no problems using the Chilkat FTP component, or connecting and browsing manually with a variety of FTP clients. The code I'm using is:
3
4011
by: forest demon | last post by:
for example, let's say I do something like, System.Diagnostics.Process.Start("notepad.exe","sample.txt"); if the user does a SaveAs (in notepad), how can i capture the path that the user selects? thanks...
14
2568
by: Jeroen | last post by:
Hi all, I've got a question about writing a library. Let me characterize that library by the following: * there is a class A which is available to the user * there is a class B that is used in severel 'underwater operations' * there is a list which stores objects of class B There are several issues I'm not sure about:
0
8570
marktang
by: marktang | last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look ! Part I. Meaning of...
0
9043
Oralloy
by: Oralloy | last post by:
Hello folks, I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>". The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed. This is as boiled down as I can make it. Here is my compilation command: g++-12 -std=c++20 -Wnarrowing bit_field.cpp Here is the code in...
0
8925
jinu1996
by: jinu1996 | last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth. The Art of Business Website Design Your website is...
1
8758
by: Hystou | last post by:
Overview: Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
0
8773
tracyyun
by: tracyyun | last post by:
Dear forum friends, With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
1
6431
isladogs
by: isladogs | last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM). In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules. He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms. Adolph will...
0
5790
by: conductexam | last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one. At the time of converting from word file to html my equations which are in the word document file was convert into image. Globals.ThisAddIn.Application.ActiveDocument.Select();...
2
2198
muto222
by: muto222 | last post by:
How can i add a mobile payment intergratation into php mysql website.
3
1924
bsmnconsultancy
by: bsmnconsultancy | last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.