Sort C # binary, decimal, and hexadecimal interchange and appending (bcc exclusive or verification method)

Code
// Convert decimal to binary
Console. writeline (convert. tostring (69, 2 ));
// Convert decimal to octal
Console. writeline (convert. tostring (69, 8 ));
// Convert decimal to hexadecimal
Console. writeline (convert. tostring (69, 16 ));

// Convert binary to decimal
Console. writeline (convert. toint32 ("100111101", 2 ));
// Octal to decimal
Console. writeline (convert. toint32 ("76", 8 ));
// Convert hexadecimal to decimal
Console. writeline (convert. toint32 ("FF", 16 ));

I recently got a parsing job to receive data packets sent from GPRS. I need to use it and transfer it from someone else. I hope it will be useful to everyone !!

Code
Public byte get_checkxor (byte [] temp, int Len)
{
Byte a = 0;
For (INT I = 1; I <Len; I ++)
{
A ^ = temp [I];
}
Return;
}