I want to get the filename and last 23 characters when I drag into a textbox.

I have it working, but I would like to just have one line. Currently, I think I am doing a bit of a workaround. As I must use a string array, and I only want one string, so I don't really need an array.

private void First_DragDrop(object sender, DragEventArgs e)
    string[] fileList = e.Data.GetData(DataFormats.FileDrop) as string[];
    string filename = Path.GetFileNameWithoutExtension(fileList[0]);
    First.Text = filename.Substring(filename.Length - 23, 23);

As you can see, I must do it in 3 steps. First, get the string array. Then, get one string from that array and turn it into a filename. FInally, I need to get the last 23 characters of that string.

I think I should be able to just get everything immediately. Though maybe it's not possible? It just seems weird that I must use an array that contains one thing.

  • \$\begingroup\$ Thanks as always Jamal, much appreciated for the corrections:) \$\endgroup\$
    – Zerowalker
    Aug 29, 2013 at 23:30
  • \$\begingroup\$ You're welcome. :-) Just want to help others help you. \$\endgroup\$
    – Jamal
    Aug 29, 2013 at 23:31

1 Answer 1


Yes, you can write everything in one line, but you will not be happy with the result. And no, .Net creators did not think of implementing a single call which would return exactly 23 characters of dropped file name. :) Silly them. :)

Meanwhile, your code makes sense. I see only two possible issues:

  1. You do not handle multiple files being dropped (that is why there is an array)
  2. You do not handle fileList being null.
  • \$\begingroup\$ Hehe, well to bad;P But the problem is, as you say, i have an array for multiple (i never drop multiple files), and which is why i want to only get the file dropped (if i drop more files, just ignore them or something), cause i am only interested in 1 file, it doesn´t make sense to get that info from many files at the same time. \$\endgroup\$
    – Zerowalker
    Aug 30, 2013 at 8:58
  • 1
    \$\begingroup\$ @Zerowalker, if you develop application for yourself - then its fine, i guess. If not, then you should not assume that user will only drop single file. You should not even assume that he will drop files, and not something else. \$\endgroup\$
    – Nikita B
    Aug 30, 2013 at 9:33
  • \$\begingroup\$ it´s for myself, so it shouldn´t be a problem:) \$\endgroup\$
    – Zerowalker
    Aug 30, 2013 at 10:31
  • \$\begingroup\$ But is there a way to simple put it into a single string? or am i forced to use an array? \$\endgroup\$
    – Zerowalker
    Aug 31, 2013 at 7:57
  • \$\begingroup\$ @Zerowalker, you have to use an array \$\endgroup\$
    – Nikita B
    Sep 2, 2013 at 5:21

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