private void textBoxMtDNA_DragDrop(object sender, DragEventArgs e) { if (e.Data.GetDataPresent(DataFormats.FileDrop)) { string[] filePaths = (string[])(e.Data.GetData(DataFormats.FileDrop)); string fasta_file = filePaths[0]; // try { tbFASTA.Text = File.ReadAllText(fasta_file); textBoxMtDNA.Text = GGKUtilLib.getMtDNAMarkers(fasta_file); } catch (Exception) { MessageBox.Show("Unable to extract mtDNA mutations from " + fasta_file); } } }