private void btnSellerLogin_Click(object sender, EventArgs e)
{
Seller seller = LoginValidator.ValidateSeller(tbxSellerLoginId.Text, tbxSellerLoginPassword.Text);
ParentForm mainForm = (ParentForm)MdiParent;
if (seller != null)
{
mainForm.SellerLogin(seller);
this.Hide();
}
else
{
MessageBox.Show("Login Failed!\nWrong Id or Password");
}
}