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Question

I writing app for Windows Phone 10

I try to make phone call by pressing a button like this

Windows.ApplicationModel.Calls.PhoneCallManager.ShowPhoneCallUI("phone number", "display name");

But have this error:

Error CS1069 The type name 'PhoneCallManager' could not be found in the namespace 'Windows.ApplicationModel.Calls'. This type has been forwarded to assembly 'Windows.Foundation.UniversalApiContract, Version=2.0.0.0, Culture=neutral, PublicKeyToken=null, ContentType=WindowsRuntime' Consider adding a reference to that assembly.

How I can solve this problem?

Answer 1

The error states that you are using a different namespace ( Windows.ApplicationModel.Calls ). The answer is in the error. It is recommending you to include a different assembly, meaning Windows.Foundation.UniversalApiContract

Edit: As stated here , I would recommend checking the requirements, there might be something you have missed.

Answer 2

I also had that error and found the solution here :

You have to include Windows Mobile Extensions for the UWP. Just add a new reference and go into Univerval Windows/Extensions.