private void btnAssociateNow_Click(object sender, EventArgs e)
        {
            if (FileAssociation.IsApplicationProgramAlreadyAssociatedWith())
            {
                DialogResult dr1 = MessageBox.Show("The application program extenseions were already associated with! " +
                                                   "Do you want to replace or refresh the file association again?", "File Association", MessageBoxButtons.YesNo, MessageBoxIcon.Exclamation);
                if (dr1 == DialogResult.No)
                {
                    return;
                }
            }

            DialogResult dr = MessageBox.Show("Proceed association on the system?", "Confirmation", MessageBoxButtons.YesNo, MessageBoxIcon.Exclamation);

            if (dr == DialogResult.Yes)
            {
                FileAssociation.EnsureAssociationsSet();
                MessageBox.Show("File association done!", "File Association", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
            }
        }