Conditional Search and Replace?

[Mike Hildner]

I'd like to search a string for x0A and replace it with x0D0A, but only if x0A is not directly following x0D.

Reason is, I'm receiving bytes through a socket and displaying the results in a text box.

I thought this might be a good opportunity to use regular expressions, but not sure what the character sequence should be. Should I study regex more for this task or is there a better way to do it?

TIA,
Mike

[Pirate]

IndexOf can do this. It return the index of the string being searched . Returns -1 if no matches . Search the forum for previous posts about IndexOf method .

[Mike Hildner]

IndexOf I understand, but I don't get how I would use in this context. Maybe I wasn't clear in my original post.

I can receive any number of bytes over the socket, sometimes several thousand (in 1024 blocks). In this response, there are many x0A characters, which I would like to replace with x0D0A. However, there are also already x0D0A sequences also, so I don't want those to end up being X0D0D0A.

Right now I'm searching for x0D0A, replacing with x0A, then search for x0A and replacing with x0D0A. This method just doesn't seem effecient.

[Pirate]

Are you doing something like this ?

Dim s As String = "Firstx0D0ASecondx0D0AThirdx0D0A"
MessageBox.Show(s.Replace("x0D0A", "x0A"))

forget about IndexOf now .

[Mike Hildner]

Exactly.