Append ******s in httpwebrequest

[C# Programming]

Hi,

When I do request from web browser my ******s look like this:

******s/Login:
CLIENT_WIDTH_DIR=1276
CLIENT_WIDTH_DIR=250
CLIENT_WIDTH=250
MAIN_WIDTH_DIR=1066
MAIN_WIDTH_DIR=60
MAIN_WIDTH=60
PHPSESSID=cb49a7c6928e0cdd1892f2bdc0322173


But when I use the following code:

myHttpWebRequest.Headers.Add(HttpRequestHeader.******, "CLIENT_WIDTH_DIR=1276");
myHttpWebRequest.Headers.Add(HttpRequestHeader.******, "CLIENT_WIDTH_DIR=250");
myHttpWebRequest.Headers.Add(HttpRequestHeader.******, "CLIENT_WIDTH=250");
myHttpWebRequest.Headers.Add(HttpRequestHeader.******, "MAIN_WIDTH_DIR=1066");
myHttpWebRequest.Headers.Add(HttpRequestHeader.******, "MAIN_WIDTH_DIR=60");
myHttpWebRequest.Headers.Add(HttpRequestHeader.******, "MAIN_WIDTH=60");
myHttpWebRequest.Headers.Add(HttpRequestHeader.******, "PHPSESSID=cb49a7c6928e0cdd1892f2bdc0322173");


the ******s look like:

CLIENT_WIDTH_DIR
1276,CLIENT_WIDTH_DIR=250,CLIENT_WIDTH=250,MAIN_WIDTH_DIR=1066,MAIN_WIDTH_DIR=60,MAIN_WIDTH=60,PHPSE SSID=cb49a7c6928e0cdd1892f2bdc0322173

2 lines, broken, instead of 7 and, of course, session id is wrong and nothing works.
How I can set the ******s right?

Thanks.