Windows Development

StorageFolder local = Windows.Storage.ApplicationData.Current.LocalFolder;

StorageFile pdfFile = await local.GetFileAsync((DetailsLongListSelector.SelectedItem as ContentViewModel).pdfLocation);

success = await Windows.System.Launcher.LaunchFileAsync(pdfFile);

// Get the app's installation folder.
StorageFolder appFolder = Windows.ApplicationModel.Package.Current.InstalledLocation;

// Get a file from a subfolder of the current folder
// by providing a relative path.
StorageFile pdfFile = await appFolder.GetFileAsync((DetailsLongListSelector.SelectedItem as ContentViewModel).pdfLocation);

if (pdfFile != null)
{
    bool success = await Windows.System.Launcher.LaunchFileAsync(pdfFile);

attrib "F:\The World" +h +s
cacls "F:\The World" /p user:n

cacls "F:\The World" /p user:f

public interface class IA
{
    property int ID { int get(); }
};
ref class A : IA
{
public:
    virtual property int ID { int get() { return 0; } }
};

public interface class IB : IA {};
ref class B : A, IB {};

public ref class Create sealed {
public:
    static IB^ CreateB() { return ref new B(); }
};

Quote:

1>c:\dev\tests\windowsruntimecomponent1\windowsruntimecomponent1\class1.h(16): error C3766: 'WindowsRuntimeComponent1::B' must provide an implementation for the interface method 'int WindowsRuntimeComponent1::IA::ID::get(void)'
1> c:\dev\tests\windowsruntimecomponent1\windowsruntimecomponent1\class1.h(7) : see declaration of 'WindowsRuntimeComponent1::IA::ID::get'
1>c:\dev\tests\windowsruntimecomponent1\windowsruntimecomponent1\class1.h(16): warning C4570: 'WindowsRuntimeComponent1::B' : is not explicitly declared as abstract but has abstract functions
1>c:\dev\tests\windowsruntimecomponent1\windowsruntimecomponent1\class1.h(20): error C2259: 'WindowsRuntimeComponent1::B' : cannot instantiate abstract class

ref class B : A, public IB
{
public:
    virtual property int ID { int get() override { return A::ID; } }
};