what does format {0:x} mean? [closed]

Question

I came across this C# literal and was wondering what does it mean?

Especially, in the following case:

string.Format("{0:x}", byteArray[i]);

Thanks

Answer 1

It means format the first argument (index 0) as hexadecimal: http://msdn.microsoft.com/en-us/library/s8s7t687(v=vs.80).aspx