> 
> **Possible Duplicate:**  
> 
> [Comparing Arrays in C#](https://stackoverflow.com/questions/713341/comparing-arrays-in-c-sharp) 
> 
> 
> 

I have a two string arrays:

```
string[] a;
string[] b;

```

How can I identify how many (and what) items of `a` are not present in `b`? As I am using .NET 2.0 so I can't use linq.