How do I drag n drop files into a ListBox with it

问题:

Currently when I drag n drop files into my ListBox using the Window_Drop event I have this code.

string[] files = (string[]) e.Data.GetData(DataFormats.FileDrop, true);
listBox.Items.Add(files);

Which works fine in WinForm it prints out the path of the file I just dragged and dropped into it as a item to the ListBox.
However when I do the same thing in WPF I get this

String[] Array

as an output instead of the path.

Now I know that code from WinForm doesn't exactly transfer over to WPF but I would guess it's pretty similar?

How do I correctly drag and drop an item to the ListBox with it showing the path of the file?

回答1:

Instead of adding the string[] to the ListBox you will need to add a string from a specified index of the array like this listBox.Items.Add(files[yourIndex]);

EDIT: If you're going to import multiple files at once without adding more from the same array you should do:

foreach(string path in files)
{
    listBox.Items.Add(path);
}

回答2:

You could set the ItemsSource property of the ListBox to your string[]:

string[] files = (string[]) e.Data.GetData(DataFormats.FileDrop, true);
listBox.ItemsSource = files;

In WPF you typically bind the ItemsSource property of an ItemsControl (such as a ListBox) to an IEnumerable<T> and define an ItemTemplate in your XAML markup that defines the appearance of each object of type T:

WPF ListBox using ItemsSource and ItemTemplate

<ListBox x:Name="listBox">
    <ListBox.ItemTemplate>
        <DataTemplate>
            <TextBlock Text="{Binding}" Foreground="Green" FontSize="16" />
        </DataTemplate>
    </ListBox.ItemTemplate>
</ListBox>