473,651 Members | 2,533 Online
Bytes | Software Development & Data Engineering Community
+ Post

Home Posts Topics Members FAQ

How to append string to string builder in C#

7 New Member
Hi,

I have used stream reader to read text file using Readline method, and i tried to append all string to string builder, but i'm not able to get all string value, i'm only getting last line of file, i have used the following coding

StreamReader reader = new StreamReader(@" d:\web_extract. txt",Encoding.D efault);
StringBuilder strbuild = null;
StreamWriter writer = null;
while(reader.Pe ek() >= 0)
{
string str = null;
str = reader.ReadLine ().ToString();
str = str.Replace("Ú" ," ");
strbuild = new StringBuilder() ;
// str = strbuild.Replac e("Ú"," ").ToString ();
strbuild.Append (str);

}
string str1 = strbuild.ToStri ng();
reader.Close();
writer = new StreamWriter(@" d:\web_extract1 .txt",true);
writer.Write(st r1);
writer.Close();

Please anybody help to solve this problem, advanced thanks for any reply.

Thanks.
Mar 17 '07 #1
2 1656
mohithmohith
1 New Member
Hi,

I think you have to put the following line outside the while loop.

strbuild = new StringBuilder() ;


Regards
Mohith


Hi,

I have used stream reader to read text file using Readline method, and i tried to append all string to string builder, but i'm not able to get all string value, i'm only getting last line of file, i have used the following coding

StreamReader reader = new StreamReader(@" d:\web_extract. txt",Encoding.D efault);
StringBuilder strbuild = null;
StreamWriter writer = null;
while(reader.Pe ek() >= 0)
{
string str = null;
str = reader.ReadLine ().ToString();
str = str.Replace("Ú" ," ");
strbuild = new StringBuilder() ;
// str = strbuild.Replac e("Ú"," ").ToString ();
strbuild.Append (str);

}
string str1 = strbuild.ToStri ng();
reader.Close();
writer = new StreamWriter(@" d:\web_extract1 .txt",true);
writer.Write(st r1);
writer.Close();

Please anybody help to solve this problem, advanced thanks for any reply.

Thanks.
Mar 17 '07 #2
kenobewan
4,871 Recognized Expert Specialist
For every line your string is being reset to null except the last line where it exits the loop. HTH.
Mar 17 '07 #3

Sign in to post your reply or Sign up for a free account.

Similar topics

9
1828
by: cody | last post by:
Why isn't there an StringBuilder.Append() overload with a StringBuilder as argument? Is there a reason that I missed?
1
3068
by: PMB | last post by:
Thank you in advance for any and all assistance. I'm trying to use a make table query to pull the last transactionID, so I can use an append query to reset the transactionID to the next sequential number. My problem is, the make table query is taking all the TransactionID's and putting them in the new table. Is there a way to take the last transactionID only and put it in the new table? So this way, when I clear the old Transactions,...
18
7940
by: Marcio Kleemann | last post by:
I need to force the first letter of each word in a line of text to uppercase. The text comes from a TextBox control in a Web Form. I'm new to ..NET and am having a problem. Since I can't modify the string directly, I convert the string to a char using .ToCharArray() and set the first letter of each word to uppercase. The problem then is I can't figure out how to convert the char array back to a string. Whether I use .ToString() from the...
8
4355
by: Two Beards | last post by:
Hi, I'm new to VB and .net so I may be mising something. I am trying to dynamically build some SQL by appending to a string. Part of the SQL comes from an mp3 id tag I have extracted from a file and stored in a string. I can do all the normal stuff with the string like msgbox and I can append it to another string but I cannot append to the end of it. I have tried things like trim and using a string builder but it still won't work. Any...
33
1784
by: sklett | last post by:
I need to take a string, make the first character lowercase and prepend an underscore character to it. Something like this: "California" "_california" Here is the (ugly) solution I cam up with: public static string MakeNetSuiteStateName(string normalStateName) { string firstChar = normalStateName.Substring(0, 1);
9
1712
by: Mosquito Man | last post by:
string s("0101"); I can't change it into s=1101 by s='1'; because string.this is read-only, no assignment is allowed :-( thank you for your help
5
1937
by: TazaTek | last post by:
Hello, I've seen some vague references on how to do this a factory, but not in enough detail to create one, or even know if it's what I need. Essentially, I'll have one of about 5 classes that could be referenced as a string (from a file). I'm not 100% sure of the relationship between the classes, but I suspect that they will not be derived from a base class, but in this
10
18625
by: Lonifasiko | last post by:
Hi, Just want to replace character at index 1 of a string with another character. Just want to replace character at that position. I thought Replace method would be overloaded with an index parameter with which you can write wanted character at that position. But no, Replace method only allows replacing one known character with another. The problem is I don't know the character to replace, just must replace the character at a known...
7
1867
by: wade.wall | last post by:
Hi all, I am having a problem appending data to an existing table. I have two tables with identical fields and I want to append the data from one table (T2) to the first (T1). T1 has 136 records and T2 has 209, for a difference of 73 records. When I run the append query, only 72 records are selected from T2, and there doesn't seem to be a pattern as to why the records selected were selected. They aren't the last 72 records or the...
0
8349
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
8275
by: Hystou | last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it. First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
0
8795
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
8695
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
8460
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
7296
agi2029
by: agi2029 | last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own.... Now, this would greatly impact the work of software developers. The idea...
1
6157
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
4281
by: adsilva | last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
1
1906
muto222
by: muto222 | last post by:
How can i add a mobile payment intergratation into php mysql website.

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.