How to avoid user control to be transparent the instant when the program is running?

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C#

Good day!

Guys, i have this problem with my user control.
I have here a user control that has a method and oveerides like these:

protected void InvalidateEx()
        {
            if(Parent == null)
                return ;
            Rectangle rc = new Rectangle(this.Location, this.Size);
            Parent.Invalidate(rc, true);
        }


protected override void OnPaintBackground(PaintEventArgs e){ }

protected override CreateParams CreateParams
{
    get
    {
        CreateParams cp = base.CreateParams;
        cp.ExStyle |= 0x00000020; //WS_EX_TRANSPARENT
        InvalidateEx();
        return cp;
    }
}

My problem is that whenever I run my program, the initial display is transparent but whenever a certain event(e.g. Form_Move event with a specific codes encoded in this event) will happen, the usercontrol will appear with a transparent background. What should I do then? I've tried doing the same code lines with respect to the events that allow the usercontrol to appear in the formload but it still didnt work. Please help.
If you need my whole user control program / my form code, please comment it here. Thanks! :)