if (this.listBox1.SelectedIndex != -1)
            {
                this.webBrowser1.Document.InvokeScript("SetText", new object[1]
                {
          (object) System.IO.File.ReadAllText("scripts\\" + this.listBox1.SelectedItem.ToString())
                });
            }
            else
            {
                int num = (int)MessageBox.Show("Please select a script from the list before trying to loading it in tab.", "Name");
            }