How to send data from c# client to java server via socket?

Hi,

I have a socket sever is written by java, it always listens on specific port. I wrote a client in Java and it could connect to the server but when I created a client in C#, I could not connect to Server. 

I guess the problem come from the endianess (little-endian, big-endian) and I have several days to research but can not solve this issue.  

Any helping will be appreciate,

Dan