类指针覆盖

是否有任何方法可以强制c#中的class或struct指向特定的内存块，如MemoryStream或byte s数组?如果是这样，是否还有一种方法可以在强制转换后调用其构造函数?我意识到这几乎没有实用性，而且可能不安全;我只是想了解语言的各个方面。

下面是我所描述的一些演示c++代码:

#include <stdio.h>
#include <conio.h>
// Don't worry about the class definition... as the name implies, it's junk
class JunkClass
{
private:
    int a;
    int b;
public:
    JunkClass(int aVal, int bVal) : a(aVal), b(bVal) { }
    ~JunkClass() { }
    static void *operator new(size_t size, void *placement){ return placement; }
};

//. .

// Assuming 32-bit integer and no padding
// This will be the memory where the class pointer is cast from
unsigned char pBytes[] = { 0, 0, 0, 0, 0, 0, 0, 0 };

//. .

int main(void)
{
    // The next two lines are what I want to do in C#
    JunkClass *pClass = (JunkClass *)pBytes; // Class pointer pointing to pBytes
    pClass = new(pBytes) JunkClass(0x44332211, 0x88776655); // Call its constructor using placement new operator
    // Verify bytes were set appropriately by the class
    // This should print 11 22 33 44 55 66 77 88 to the console
    unsigned char *p = pBytes;
    for (int i = 0; i < 8; i++)
        printf("%02X ", *(p++));
    // Call destructor
    pClass->~JunkClass();
    while (!_kbhit());
    return 0;
}