private void loadListingToolStripMenuItem_Click(object sender, EventArgs e)
{
// Load organic listing
var ofd = new OpenFileDialog();
ofd.Filter = "Listing files (*.lst)|*.lst|Text files (*.txt)|*.txt|All files (*.*)|*.*";
ofd.FileName = "";
if (ofd.ShowDialog() != DialogResult.OK)
return;
LoadOrganicListing(ofd.FileName);
Program.lastlistingFilepath = ofd.FileName;
ResetLayout();
}