private void HandleDrops(System.Windows.Controls.TextBox source, System.Windows.DragEventArgs e)
{
// Note that you can have more than one file.
string[] files = (string[])e.Data.GetData(System.Windows.DataFormats.FileDrop);
string directory = files[0];
if (File.Exists(files[0]))
{
directory = Path.GetDirectoryName(files[0]);
}
if (directory != files[0])
{
txtOutput.Text = $"That was a file that you dropped. I can't use that so I selected the path: {directory}";
}
source.Content(directory);
}