"is"-reference or gettype()
===

I'm searching inside some `controls` in my WinFoms Form, with the help of `foreach` statements.
I'm comparing the object i find through a "is"-reference (`a is DataGridView`). With "a" being an object in a control collecion.
That works fine so far, because the compared objects on my form are all sufficiantly different from one another.

In a new form i created i'm using a derived version of a `DataGridView` called `my_datagridview`. So when a `my_datagridview` is compared to a `DataGridView` through a "is"-reference no exception is thrown, which is "wrong" cause i want to handle the two seperately.

Is there a way to compare `my_datagridview` and `DataGridView` properly?