Similar Crypto++ Encoder method in C#

[Perplex 16]

Is there similar Crypto++ Encoder method in C# ? This method What does it do?

https://github.com/weidai11/cryptopp/blob/master/integer.cpp#L3169

[Kurapica 553]

What it does : https://www.cryptopp.com/docs/ref/class_integer.html#aa1d9ad6ba9913e14a4cb0b7fa8e4dcf1

C# equivalent : https://msdn.microsoft.com/en-us/library/system.bitconverter%28v=vs.110%29.aspx