Read a file into array for C++/C#

C++

fstream fin;
fin.open(filename, ios::in);

if (!fin.good())
{
    cerr<<"Failed to open "<<filename<<endl;
    return -1;
}

fin.seekg(0, ios::end);
size_t len = fin.tellg();

char * raw = new char[len+1];
raw[0] = 0;

fin.read(raw, len);
fin.close();

printf("%s\n", raw);
delete raw;

C#