Refresh Form in Windows Application

Dear4 Programmer, I have try this code but i have still the same problem

How to Refresh reload Windows form in windows application using c#

private void btnReset_Click(object sender, EventArgs e)
{
    this.ParentForm.Refresh();
}

private void btnReset_Click(object sender, EventArgs e)
{
    CID_Create_Part2 FrnCidPart2 = new CID_Create_Part2();
    FrnCidPart2.Refresh();
}