C# Visual Studio 2015. Give application focus when starting from desktop

Question

When starting my application from the desktop icon the desktop still has focus. How do I give focus to the form that is showing instead of having to click on the form? I give focus to the Serial Number textbox but I still have to click the form to start typing in the textbox. I assume I will need to go to a location other than the Page Load.

 #region Page Load
    public void FBinterface_Load(object sender, EventArgs e)
    {
        ActiveControl = txtSerial;
        //CHECK FOR DB CONNECTION
        try
        {
            connection.Open();
            lbl_connect.Text = "Database Connected";
            connection.Close();
        }
        catch (Exception expe)
        {
            MessageBox.Show(expe.Source);
        }