Hi All,
I was curious if an exception is generated with the .ReadLine() function (found in the StreamReader class), will the current line be consumed? Thus the next .ReadLine() will start at the next line.
I ask this, because if it an exception is generated i would like to retry the .ReadLine() from the same line without advancing to the next one. If the line is consumed, is there anyway to specify a line number to start reading at?
Thanks for all your help,
Kunk
2  1490 
Kunk,
I would take the approach that if ReadLine threw an exception then the
entire stream is bad!
In other words I do not see that the StreamReader could possible ensure you
could continue using it, once it threw any exception...
Just out of curiosity, what kind of exception do you see that ReadLine would
throw that would leave the StreamReader and underlying Stream in a
"guaranteed " usable state?
Hope this helps
Jay
"Kunk" <da*******@hotm ail.com> wrote in message
news:F9******** *************** ***********@mic rosoft.com... Hi All,
I was curious if an exception is generated with the .ReadLine() function
(found in the StreamReader class), will the current line be consumed? Thus
the next .ReadLine() will start at the next line.
I ask this, because if it an exception is generated i would like to retry
the .ReadLine() from the same line without advancing to the next one. If the
line is consumed, is there anyway to specify a line number to start reading
at?
Thanks for all your help,
Kunk
Hi Jay,
First of all, thankyou for the response!
Secondly, I do not have very much experience accessing text files with the stream reader, so i was not sure what type of errors to expect (if any) from the readline() after succesfully executing
try
srStreamReader = File.OpenText(s trFilePath)
catch ex as Exception
end try
normally i would not be so overly obessed with this type of problem when a person is running the program and can attempt to manually fix the error. But, i am writting a program that is run automatically from the network at night. it must access 3 different text files, pull data from each one and save it to a database. in short, there will be no human intervention and i would like to program to attempt to self recover before sending an autmated error e-mail to the man in charge.
so, i was wondering if ReadLine() threw an exception, will it consume the line or is there anyway to specify a line number to start reading at?
Thanks,
Kunk
This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
by: Geoffrey |
last post by:
Hope someone can help.
I am trying to read data from a file binary file and then unpack the
data into python variables. Some of the data is store like this;
xbuffer: '\x00\x00\xb9\x02\x13EXCLUDE_CREDIT_CARD'
# the above was printed using repr(xbuffer).
# Note that int(0x13) = 19 which is exactly the length of the visible
text
#
|
by: les_ander |
last post by:
Hi,
suppose I am reading lines from a file or stdin.
I want to just "peek" in to the next line, and if it starts
with a special character I want to break out of a for loop,
other wise I want to do readline().
Is there a way to do this?
for example:
while 1:
line=stdin.peek_nextline()
|
by: Paul Klanderud |
last post by:
I'm encountering a strange situation with a .config file
for a simple windows form test harness I built to test
some components normally invoked by a windows service.
My config file, "testharness.exe.config," has some
<system.diagnostics> settings (trace listeners).
When my file is read only, things are fine. However, when
I toggle the read-only attribute off (so I can edit it),
and then run my test harness, as soon as I get to the...
|
by: Andreas Suurkuusk |
last post by:
Hi,
I just noticed your post in the "C# memory problem: no end for our problem?"
thread.
In the post you implied that I do not how the garbage collector works and
that I mislead people. Since the thread is over a month old, I decided to
start a new one with my response.
Please see my comments inline.
|
by: Martin Robins |
last post by:
I am trying to parse a string that is similar in form to an OLEDB connection string using regular expressions; in principle it is working, but certain character combinations in the string being parsed can completely wreck it.
The string I am trying to parse is as follows:
commandText=insert into (Text) values (@message + N': ' + @category);commandType=StoredProcedure; message=@message; category=@category
I am looking to retrive name value...
| | |
by: JKop |
last post by:
When you want to store an integer in C++, you use an integral type, eg.
int main()
{
unsigned char amount_legs_dog = 4;
}
In writing portable C++ code, there should be only two factors that
influence which integral type you choose:
|
by: Kevin Goodsell |
last post by:
The return value of sscanf should be "the number of input items
assigned" (unless an input failure occurs before any conversion). Are
items assigned due to a "%n" directive included in the returned count?
Thanks.
-Kevin
--
My email address is valid, but changes periodically.
To contact me please use the address from a recent posting.
|
by: kj |
last post by:
My book (Flanagan's JavaScript: The Definitive Guide, 5th ed.)
implies on page 111 that the following two constructs are equivalent:
( x.constructor == Foo )
and
( x instanceof Foo )
The author states that the instanceof operator computes its result
|
by: clyfish |
last post by:
In cmd, I can use find like this.
C:\>netstat -an | find "445"
TCP 0.0.0.0:445 0.0.0.0:0 LISTENING
UDP 0.0.0.0:445 *:*
C:\>
And os.system is OK.
TCP 0.0.0.0:445 0.0.0.0:0 LISTENING
|
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...
|
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...
| | |
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...
|
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...
|
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();...
|
by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
|
by: 6302768590 |
last post by:
Hai team
i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
|
by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
| | |
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...
| |
