private void Reset()//reset the all changes on textboxes
{
TxtName.Text = string.Empty;
TxtSurname.Text = string.Empty;
TxtPhone.Text = string.Empty;
TxtUsername.Text = string.Empty;
TxtPassword.Text = string.Empty;
TxtNewPassword.Text = string.Empty;
CmbPosition.SelectedItem = null;
BtnAdd.Show();
BtnDeactive.Hide();
BtnUpdate.Hide();
BtnCancel.Hide();
TxtNewPassword.Hide();
LblPassword.Text = "password";
TxtPassword.Show();
LblComment.Hide();
}