Sure, I would be happy to. Here's the C# implementation:
```c#
static bool IsPalindrome(string s) {
    if (s.Length == 0) {
        return true;
    }
    
    ulong left = 0;
    ulong right = s.Length - 1;

    while (left < right) {
        if (s[left] != s[right]) {
            return false;
        }
        left++;
        right--;
    }

    return true;
}
```
And here it is in C++:
```cpp
#include <string>
#include <cstdint>

bool isPalindrome(const std::string& s) {
    if (s.length() == 0) {
        return true;
    }
    
    std::size_t left = 0;
    std::size_t right = s.length() - 1;

    while (left < right) {
        if (s[left] != s[right]) {
            return false;
        }
        left++;
        right--;
    }

    return true;
}
```
In both implementations, we define two variables, `left` and `right`, that begin at the start and end of the string respectively. We work our way inwards, ensuring as we go that the characters at `left` and `right` are equivalent. When `left >= right`, we know that the string must be composed of two equal reversed parts, one after the other. In this case, we return `true`.

Note that for the datatypes of `left` and `right`, I have used `std::size_t` in C++, and `ulong` in C#. This is to avoid integer overflow. For example, `int` in C++ is a 32-bit datatype on nearly all modern systems. If I had used `int` in place of `std::size_t`, the code would likely have been unable to handle strings with `length() > 2147483647`.

I have also inserted a length check at the beginning of each function; this serves to avoid unsigned integer underflow.
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