Hi!
I need to edit a text file.
I need to replace a given text in the file with a new one.
This text can exist anywhere in the file, so i first need to locate the text
position and then edit it.
How do i acheive this.
Abhishek
4  10153 
Hi Abhishek,
Read the entire file into a string, edit the string, and write it all back
to the file.
--
Happy Coding!
Morten Wennevik [C# MVP]
hi,
depending of the size of the file you can do two things:
1- if the file is small read it completely in a string and use
String.Replace , write the file back
2- if file is big , read it line by line, replace string and write to a temp
file, at the end overwrite the original file
cheers,
--
Ignacio Machin,
ignacio.machin AT dot.state.fl.us
Florida Department Of Transportation
"Abhishek" <ab******@alway shelpful.com> wrote in message
news:ui******** ******@TK2MSFTN GP14.phx.gbl... Hi!
I need to edit a text file.
I need to replace a given text in the file with a new one.
This text can exist anywhere in the file, so i first need to locate the
text
position and then edit it.
How do i acheive this.
Abhishek
I> 2- if file is big , read it line by line, replace string and write to
I> a temp
I> file, at the end overwrite the original file
If the file is big, you cannot read it line by line, just because there may
be only one line of text, all that big file, and you'll either gain an OutOfMemoryExce ption
or degrade the performance dramatically. Should do processing in a streaming
fashion with a lookahead of at least the search term in size if you expect
large sizes.
--
Serge
Hi Serge,
You are 100% right, my mistake.
cheers,
--
Ignacio Machin,
ignacio.machin AT dot.state.fl.us
Florida Department Of Transportation
"Serge Baltic" <ns*@hypersw.ne t> wrote in message
news:c8******** *************** ***@news.micros oft.com... I> 2- if file is big , read it line by line, replace string and write to
I> a temp
I> file, at the end overwrite the original file
If the file is big, you cannot read it line by line, just because there
may be only one line of text, all that big file, and you'll either gain an
OutOfMemoryExce ption or degrade the performance dramatically. Should do
processing in a streaming fashion with a lookahead of at least the search
term in size if you expect large sizes.
--
Serge
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