PKHeX.SAV_Wondercard.tabMain_DragDrop C# (CSharp) Method

        private void tabMain_DragDrop(object sender, DragEventArgs e)
        {
            string[] files = (string[])e.Data.GetData(DataFormats.FileDrop);

            // Check for multiple wondercards
            if (LB_WCs.SelectedIndex < 0) LB_WCs.SelectedIndex = 0;
            int ctr = LB_WCs.SelectedIndex;

            if (files.Length == 1)
            {
                string path = files[0]; // open first D&D
                if (new FileInfo(path).Length != 0x108)
                {
                    Util.Error("File is not a Wondercard:", path);
                    return;
                }
                byte[] newwc6 = File.ReadAllBytes(path);
                Array.Copy(newwc6, wondercard_data, newwc6.Length);
                loadwcdata();
            }
            else if (DialogResult.Yes == Util.Prompt(MessageBoxButtons.YesNo, String.Format("Try to load {0} Wondercards starting at Card {1}?", files.Length, ctr + 1)))
            {
                int i = 0;
                while (i < files.Length && ctr < 24)
                {
                    string path = files[i++]; // open first D&D
                    if (new FileInfo(path).Length != 0x108)
                    { Util.Error("File is not a Wondercard:", path); continue; }

                    ctr++; // Load in WC
                    byte[] newwc6 = File.ReadAllBytes(path);
                    Array.Copy(newwc6, wondercard_data, newwc6.Length);
                    loadwcdata();

                    // Set in WC
                    B_DisplaytoWCSlot.PerformClick();

                    // Advance to next WC
                    if (ctr != 24) LB_WCs.SelectedIndex = ctr;
                }
            }
        }