// Open the file on a mouse double click private void FileOutput_DoubleClick(object sender, MouseEventArgs e) { int index = FileOutput.IndexFromPoint(e.Location); if (index != System.Windows.Forms.ListBox.NoMatches) { if (!FileOutput.SelectedItem.ToString().Equals("No search results found")) { System.Diagnostics.Process.Start(FileOutput.SelectedItem.ToString()); } } }