Can C# extension methods access private variables?

Question

Is it possible to access an object's private variables using an extension method?

Accepted Answer

No. You can do the same in an extension method as in a "normal" static method in some utility class.

So this extension method

```
public static void SomeMethod(this string s)
{
    // do something with 's'
}
```

is equivalent to some static helper method like this (at least regarding what you can access):

```
public static void SomeStringMethod(string s)
{
    // do something with 's'
}
```

(Of course you could use some reflection in either method to access private members. But I guess that's not the point of this question.)

Solution