Can a Pakistani citizen transit through Netherlands or Switzerland if traveling with an official passport?

As stated in Timatic, the database used by Airlines:

For the Netherlands:

Visa required, except for Nationals of Pakistan, holding onward tickets transiting by the same or first connecting aircraft AND meeting one of the following conditions:

[...]

• holding a visa issued by Bulgaria, Canada, Croatia, Cyprus, Ireland (Rep.), Japan, Romania, USA or United Kingdom, traveling to any non-Schengen Member State;
• returning from Bulgaria, Canada, Croatia, Cyprus, Ireland (Rep.), Japan, Romania, USA or United Kingdom after having used the visa;

For Switzerland

Visa required, except for Holders of confirmed onward tickets in transit only through Geneva (GVA) or Zurich (ZRH)

So yes, you can transit in the Netherlands or Switzerland if the trip is in a single booking.

The other answer references Timatic, I will, however, try to answer your question with direct references to official governmental sites.

Question 1:

Can I transit through Netherlands without airport transit visa?

Answer:

You only need an airport transit visa if your nationality appears on the list of countries whose nationals require a visa (Pakistan is in this list). However, an airport transit visa is not required if you:

• have a visa or residence permit for a country in the Schengen Area, the EU (UK is here) or the EEA.

So yes, you can transit through Netherlands without airport transit visa. (Source).

Question 2:

Can I transit through Switzerland without airport transit visa?

Answer:

Citizens of the following states are required to hold an airport visa:

• ...
• Pakistan

However, holders of a valid visa issued by one of the following states are exempted from the requirement to hold an airport transit visa:

• ...
• Great Britain (They mean UK)

So yes, you can transit through Switzerland without airport transit visa. (Source).