private void FI_Timer_Tick(object sender, EventArgs e)
        {
            this.Opacity = this.Opacity + .1;

            if (this.Opacity == 1)
            {
                FI_Timer.Stop();
            }
        }
 private void Main_Load(object sender, EventArgs e)
 {
     FI_Timer.Start();
 }
 private void Converter_Load(object sender, EventArgs e)
 {
     Conversion();
     FI_Timer.Start();
 }