Question

I have this function that needs to be converted to a lambda statement:

public int someFunction()
{
    int pCount = 0;
    foreach (Top top in Tops)
    {
        foreach (P p in top.TopPs)
        {
            pCount++;
        }
    }
    return pCount;
}

Added more clarity:

Tops and top.TopPs extends ObservableCollection

How do i do it?

Answer 1

Here’s an alternative method:

    int pCount = (from t in Tops
                  from p in t.TopPs
                  select p).Count();