C# Cannot Implicitly Convert type 'System.IO.FileInfo' to string

Question

I have a list of music files in my listbox and I'm trying to play them using the media player when I double click on them. But it keeps coming up with the error. I'm assuming it's because 'files' is not a string, but how do I convert it into a string? I've tried using .ToString but it doesn't work. I'm quite new to this. Any help is appreciated.

The error is in the axWindowsMediaPlayer.URL = files[listBox1.SelectedIndex];

Here is my code:

public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
    }

    string[] extensions = new[] { ".mp3", ".wma", ".wav", ".MP3", ".WMA" };

    FileInfo[] files;

    private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
    {
        axWindowsMediaPlayer1.URL = files[listBox1.SelectedIndex];
    }

    private void Form1_Load(object sender, EventArgs e)
    {
        DirectoryInfo dinfo = new DirectoryInfo(@"C:\Tracks");
        files = dinfo.EnumerateFiles().Where(f => extensions.Contains(f.Extension.ToLower())).ToArray();

        for (int i = 0; i < files.Length; i++)
        {
            listBox1.Items.Add(files[i]);
        }


    }

This is the code that's showing the error:

 private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
{
    axWindowsMediaPlayer1.URL = files[listBox1.SelectedIndex];
}

Answer 1

I don't have an IDE open to try this, but try changing:

private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
{
    axWindowsMediaPlayer1.URL = files[listBox1.SelectedIndex];
}

to:

private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
{
    axWindowsMediaPlayer1.URL = files[listBox1.SelectedIndex].Fullname;
}