单单前端校验是不安全的，所以后端的校验同样必不可少。

后端正则检验表单

public void GetValidate()
{
    string email = Request["email"];
    if (!Regex.IsMatch(email, @"^[\w-] (\.[\w-] )*@[\w-] (\.[\w-] ) $"))
    {
        Page.RegisterStartupScript("test", "<script>alert('邮箱格式不正确！');window.history.go(-1);</script>");
        return;
    }
    string phone = Request["phone"];
    if (!Regex.IsMatch(phone, @"^[1][3-8]\d{9}$"))
    {
        Page.RegisterStartupScript("test", "<script>alert('手机号码格式不正确！');window.history.go(-1);</script>");
        return;
    }
    string phone = Request["phone"];
    if (!Regex.IsMatch(phone, @"\d{3,4}-\d{7,8}") && !Regex.IsMatch(phone, @"^[1]\d{10}"))
    {
        Page.RegisterStartupScript("test", "<script>alert('电话号码格式不正确！');window.history.go(-1);</script>");
        return;
    }
    string shopprice = Request["shopprice"];
    if (!Regex.IsMatch(shopprice, @"^(([0-9]|([1-9][0-9]{0,9}))((\.[0-9]{1,2})?))$"))
    {
        Page.RegisterStartupScript("test", "<script>alert('金额格式不正确！');window.history.go(-1);</script>");
        return;
    }
    string shopstore = Request["shopstore"];
    if (!Regex.IsMatch(shopstore, @"^(0|[1-9]\d*)$"))
    {
        Page.RegisterStartupScript("test", "<script>alert('库存格式不正确！');window.history.go(-1);</script>");
        return;
    }
}