You are designing a Windows Presentation Foundation (WPF) application by using Microsoft .NET Framework 4 and Microsoft Visual Studio 2010.
The application accesses a Windows Communication Service (WCF) service on a middle-tier server to retrieve sales invoice information.
The information consists of a master record and severs detail records that are displayed by the application.
The source data frequently changes.
You need to ensure that the design meets the following requirements:
- Memorizes the amount of network traffic.
- Ensures that UI responsiveness is not impacted by WCF calls.
- Ensures that data is always up-to-date.
What should you do?
A. Use multi-thread in the application.
B. Use data caching the client placation.
C. Use the Dispatcher. Invoke method when making WCF calls.
D. Use the Dispatcher. Begin invoke method when making WCF calls.
