Iterating through file

[Jerry S]

Hi

I've got a text file which is a list of names (one name per line). I
don't know in advance how many names (lines) there are in the file.

What's the easiest way to iterate through the file, doing something
with each name?

Is there a "while file not ended" type command? (I understand about
stream readers, etc., I'm just not sure about what kind of loop to
use!).

Thanks!

Jerry

 

[Franz]

Hi

I've got a text file which is a list of names (one name per line). I
don't know in advance how many names (lines) there are in the file.

What's the easiest way to iterate through the file, doing something
with each name?

Is there a "while file not ended" type command? (I understand about
stream readers, etc., I'm just not sure about what kind of loop to
use!).

string strLine = reader.ReadLine();
while (strLine != null) {
if (strLine.Length > 0) {
// Do your task for each file name
}
strLine = reader.ReadLine();
}

 

[Vanessa]

Wouldn't you make things easier by using a binary file?
That way you won't have problems updating your data.

If your data file is very big, you could then create a second index
file with the names and the record numbers of the data file.
You read through the index file sequentially and then go directly
(randomly) to the data file.

 

[Vanessa]

Wouldn't you make things easier by using a binary file?
That way you won't have problems updating your data.

If your data file is very big, you could then create a second index
file with the names and the record numbers of the data file.
You read through the index file sequentially and then go directly
(randomly) to the data file.

 

[Jerry S]

Many thanks guys!

Jerry