Question

我有以下非常简单的形式：

<asp:UpdatePanel ID="ClaimRewardsForm" runat="server">
    <ContentTemplate>
        <span class="largeBold">Select jacket weight:</span><br />
        <asp:RadioButtonList runat="server" ID="JacketWeight">
            <asp:ListItem Value="Lightweight" Text="Lightweight (fleece)" />
            <asp:ListItem value="Heavyweight" Text="Heavyweight (cotton)" />                                
        </asp:RadioButtonList>
        <br />
        <span class="largeBold">Select size:</span><br />
        (Men's sizes only)<br />
        <asp:DropDownList ID="JacketSize" runat="server">
            <asp:ListItem Value="Small" Text="Small" />
            <asp:ListItem Value="Medium" Text="Medium" />
            <asp:ListItem Value="Large" Text="Large" />
        </asp:DropDownList><br />
        <br />
        <asp:ImageButton ID="SubmitButton" runat="server" ImageUrl = "~/Content/Images/submitButton.png" onclick="SubmitButton_Click" />
    </ContentTemplate>
</asp:UpdatePanel>

在我的按钮的点击处理程序中，我有：

protected void SubmitButton_Click(object sender, EventArgs e)
{
    if (IsValid)
    {
        using (var work = UnitOfWorkFactory.Create())
        {
            var id = new Guid(Session["id"].ToString());
            var account = UserAccounts.Get(id);

            if (account == null)
                throw new Exception("Invalid user account id.");

            account.RewardInfo.Clear();
            account.RewardInfo.Add(new RewardInfo()
            {
                UserAccount = account,
                JacketWeight = JacketWeight.SelectedValue,
                JacketSize = JacketSize.SelectedValue
            });

            work.Commit();
        }

        //ClaimRewardsForm.Update();
        //ScriptManager.RegisterStartupScript(this, GetType(),
        //    "confirmation", "ClaimRewards.showConfirmation();", true);
    }
}

我没有以任何方式修改表单字段，但我仍然收到以下错误：

505|error|500|Invalid postback or callback argument.  Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page.  For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them.  If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation.|

由于我在回帖期间根本没有修改控件，所以我不能为我的生活弄清楚为什么它的表现就像我一样。有什么想法吗？

Answer 1

这个人here是你的罪魁祸首。如果您了解安全风险，则必须确定要发布的内容以阻止请求或禁用EventValidation。

我发布的代码中没有显示任何内容，但＆lt;＆gt;选项值肯定会与它混淆。

Answer 2

愚蠢的我。我正在使用DropDownList适配器来允许列表中的optiongroup元素，但这导致了无效的回发，因为它修改了幕后列表中的元素，而没有注册事件验证的修改值。我修改了适配器来执行注册，现在工作正常。

ASP.NET updatepanel +无效的回发

2 个答案: