Accessing Array Elements Using a Pointer C# with Example

In C#, an array name and a pointer to a data type same as the array data, are not the same variable type. For 
example, int *p and int[] p, are not same type. You can increment the pointer variable p because it is not fixed in 
memory but an array address is fixed in memory, and you can't increment that. 
Therefore, if you need to access an array data using a pointer variable, as we traditionally do in C, or C++, you need 
to fix the pointer using the fixed keyword. 
The following example demonstrates this: 
using System; 
namespace UnsafeCodeApplication 
{ 
class TestPointer 
{ 
public unsafe static void Main() 
{ 
int[] list = {10, 100, 200}; 
fixed(int *ptr = list) 
/* let us have array address in pointer */ 
for ( int i = 0; i < 3; i++) 
{ 
Console.WriteLine("Address of list[{0}]={1}",i,(int)(ptr + i)); 
Console.WriteLine("Value of list[{0}]={1}", i, *(ptr + i)); 
} 
Console.ReadKey(); 
} 
} 
} 
When the above code was compiled and executed, it produces the following result: 
Address of list[0] = 31627168 
Value of list[0] = 10 
Address of list[1] = 31627172 
Value of list[1] = 100 
Address of list[2] = 31627176 
Value of list[2] = 200