C# RSA signature with my keys

[Rinat]

Hi

c# : I woyld like to make RSA SHA256 sign to my data, with my own private and modulus keys.
the RSAParameters give me it's keys , and when tryinh to set my keys it not success since too many fields on this structure.
how to i do RSA sign data with my private/modulus ?
can i get am example ?

Thanks
Rinat