Как это на C# будет

[Jekon]

class Ring
{
private:
int inf;
Ring *next, *prev;
public:
Ring()
{
inf = 0;
next = NULL;
prev = NULL;
}
void Outp();
void Add(const int &r);
unsigned int Solve();
};

Ring *ph;

void Ring::Add(const int &r)
{Ring *k;
k = new (Ring);
k->inf=r;
k->prev=this;
k->next=next;
if (next!=NULL)
next->prev=k;
else
{
k->next=this;
this->prev=k;
}
next=k;
}

unsigned int Ring::Solve()
{Ring *k;
unsigned int C;
k = this;
C=0;
do
{
k=k->next;
if (k->prev->inf == k->next->inf) C++;
}
while (k!=this);
return C;
}