Help me in writing to first line of existing file

sara_1981 · September 5th, 2004, 09:26 AM

hi there,
anybody here know how we could write to first line of existing file, my file is aspx format and it is full, everytime I write with streamwriter, it just write to last line of file but I need to write in to first line. could anyone help me please.
(asp.net)
regards
sara

Regards
Sara

mehdi62b · September 6th, 2004, 06:09 AM

Hello Sara,
can you explain about your scenario more,
where do you want to save the file,in client or server
why a ASPX file?
because you want to write the line at the begining,you should do some steps!
1-make a new file
2-write your new lines to it
3-open your ASPX file
4-read from ASPX file and write them to new file while you havnt reached the end of ASPX file
5-delete ASPX file
6-rename the new file to exact name of your ASPX file.
if you have some problems in every step ask me I Will explain it in detail ...
HtH.

--------------------------------------------
Mehdi.:)

sara_1981 · September 6th, 2004, 10:48 PM

Hi,
thanks very much for your reply, yeah this way is possible but it is not good when we have more than 5000 files which every file is full of data, is there any other way that without needing to copying that file to another, just open current file and write in first line of it?
thanks in advance.

Regards
Sara

mehdi62b · September 7th, 2004, 11:40 AM

Hi,
for working only on one file the method I told you would be fast enough,but for working on 5000 files,you should consider other ways,I dont know them exactly(but I will thinking off them)
maybe we should use Asynchronous Delegates or Asynchronous Programming
could someone help us what we should do here?

--------------------------------------------
Mehdi.:)

mehdi62b · September 19th, 2004, 08:59 AM

I was looking for a solution could make this process faster,but I didnt find anything?
a simple way is,

Code:

for(int i=1;i<=5000;i++)
{
 string Filename="File"+i.ToString();  
 ChangeFile(FileName);//this method changes one file 
}

but this method works very slowly for 5000 files,
can anybody give me an idea about this problem?
Thanks in advance.

--------------------------------------------
Mehdi.:)