GHWizard.UserInputForm.browseGrasshopper_Click C# (CSharp) Method

        private void browseGrasshopper_Click(object sender, EventArgs e)
        {
            string start_at = File.Exists(grasshopperPath.Text) ? grasshopperPath.Text :
            Environment.GetFolderPath(Environment.SpecialFolder.ProgramFiles);

              string location;
              if (GetLocation("Grasshopper library", "Grasshopper.dll", start_at, out location))
              {
            grasshopperPath.Text = location;
            grasshopperPath.ForeColor = SystemColors.ControlDark;
            EnableOrDisableContinue();
              }
        }