You are developing a Universal Windows Platform (UWP) app. The app must allow the user to select only one file at a time.
You need to ensure that the app displays the appropriate dialog window.
Which method should you use? this.textBlock.Text = “Picked photo: ” + file.Name;

A.
FileOpenPicker.PickSingleFileAsync()

B.
FileOpenPicker.PickMultipleFilesAsync()

C.
StorageItem.OpenSequentialReadAsync()

D.
StorageItem.GetFileFromPathAsync()

E.
StorageItem.OpenReadAsync()

Explanation:
To pick a single file.
Windows.Storage.StorageFile file = await picker.PickSingleFileAsync();
if (file != null)

{

// Application now has read/write access to the picked file

}

else

{

this.textBlock.Text = “Operation cancelled.”;

}

https://docs.microsoft.com/en-us/windows/uwp/files/quickstart-using-file-and-folder-pickers#pick-a-
single-file-complete-code-listing