In this exercise, you
            will specify the target framework that should be used when the project
            is built.
         
         To set the target framework
               for the “MyFirstProject”
            
            
               - In Microsoft Visual Studio, click View
                  menu  Solution Explorer to
                  display the Solution Explorer if it is not already displayed. Solution Explorer to
                  display the Solution Explorer if it is not already displayed.
- In the Solution Explorer, on the toolbar
                  along the top, click Show All Files.
               
- Right-click the MyFirstProject project
                  node and click Properties.
               
- In the Project Designer, click the Applications
                  tab.
               
- Do one of the following:
                     - VB.NET - On
                        the Compile tab, Advanced Compile Options, Target Framework drop-down
                        list, select .NET Framework 4.0.
                     
- C# - On the
                        Applications tab, Target Framework drop-down list, select .NET Framework
                        4.0.