private void btn_chooseWorld_Click(object sender, EventArgs e) { var ofd = new OpenFileDialog(); ofd.DefaultExt = ".sav"; ofd.Filter = "Gnomoria Save Games (.sav)|*.sav"; ofd.InitialDirectory = dir; if (ofd.ShowDialog(this) == System.Windows.Forms.DialogResult.OK) { FileSelected.TryRaise(this, ofd.FileName, TreatAll, AprilFool); } }