void LoadDataDropDownList()
{
drpProductCategory.DataSource = _product.GetList();
drpProductCategory.DataValueField = "ProID";
drpProductCategory.DataTextField = "vName";
drpProductCategory.DataBind();
}
void LoadData()
{
rbtProductCategories.DataSource = _product.GetList();
rbtProductCategories.DataBind();
}