发送给WCF服务的字符串“ 7 \\ aAZEA \\ 0 \\ a \\ rPV”被接收为“ 7 \\ aAZEA \\ 0 \\ a \\ nPV”

Question

When I send the string

"7\\aAZEA\\0\\a\\rPV"

to a WCF service it's received as

"7\\aAZEA\\0\\a\\nPV"

ie the \\r is changed to \\n .

I assume this is due to " /r " being a control character.

This is an encrypted string so I can't manually replace characters.

How can I prevent this?

Thanks

Answer 1

The comments already helped, but hope this will clarify the reasoning behind it.

In a string a backslash is always used for control characters, \\r being carriage return, \\n being a line feed and \\0 being a null character. You are indeed correct, \\r is being interpreted as a carriage return (which it replaces with the \\n line feed). Because \\a does not mean anything, it is sent as two characters ( \\ and a ). To make sure a backslash is interpreted as a backslash in a string (and not possibly as a control character), a double backslash \\\\ is used.

When you require to send other strings, make sure that you use double backslashes everywhere the string actually requires a backslash and the following character to be sent.

In your string \\0 is interpreted as a single NULL character, not the two characters \\ and 0 . This could be what you want, but if not, it's best to write \\\\0 .

To conclude, if you want to send your string literally, this is what you should send:

"7\\aAZEA\\0\\a\\nPV"