String replace

[Dirk A]

Hello,

I've got a string that contains about 32kb of data . Throughout the string there are clusters of 'FF' blocks . I want to replace them using the

str.replace

function, but afterwards when the string is written to a file I see that not all 'FF' blocks are replaced . Even though

str.IndexOf("FF")

gives me -1

this is the replace command :

 str = str.Replace("FF","AA")

 

[agraham]

Check your code carefully. I really don't believe that the string contains any "FF" sequences if IndexOf returns -1.

 

[klaus]

What do you mean with "FF" ?
Two times the letter F or do you mean the FormFeed character ?
If FF means FormFeed you should use:
str = str.Replace(Chr(12), "AA")
or replace "AA" by something else depending on what AA means.

Best regards.

 

[Dirk A]

You guys were right , it was in my code
replace function works fine !