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以下是我的代码的测试场景。1) 一旦用户选择了 Webpage.aspx 上的一个单选按钮，就会出现一个模态弹出扩展器。2) 在模式弹出窗口中定义了一个用户控件 (SSL_Ticket.ascx)。3) 为包含在用户控件内的下拉列表定义了一个RequiredFieldValidator。4) 如果用户从下拉列表中选择“0”值，则不会显示验证错误消息。

代码

网页.aspx

                     <asp:RadioButtonList ID="RadioButtonListForTicket" runat="server"  AutoPostBack="true"
                         OnSelectedIndexChanged="radioButtonListForTicket_OnSelectedIndexChanged">
                            <asp:ListItem Selected="True">No</asp:ListItem>
                            <asp:ListItem>Yes</asp:ListItem>
                      </asp:RadioButtonList>
                      <ajaxToolkit:ModalPopupExtender ID="ModalPopupExtenderForTicket" runat="server" BackgroundCssClass="popUpStyle"
                          DropShadow="true" PopupControlID="divTicketPreview" PopupDragHandleControlID="panelDragHandle"
                          TargetControlID="btnForPopupAppear"   CancelControlID="btnForPopupDisappear"/>

…………
_

网页.aspx.cs

protected void radioButtonListForTicket_OnSelectedIndexChanged(object sender, System.EventArgs e)
{
    if (RadioButtonListForTicket.SelectedItem.Text.ToString().Equals("Yes"))
    {

        // Check if the sites are selected
        updateSelectionCount();
        updateListOfSites();

        if (selectionCount == 0)
        {
            lblSSLTicketSelection.Text = "Please select a site.";
            RadioButtonListForTicket.SelectedValue = "No";
            return;
        }
        else
        {
            lblSSLTicketSelection.Text = "";
        }

        ....

        ModalPopupExtenderForTicket.Show();
    }
}

...

SSL_Ticket.ascx

           <asp:DropDownList ID="cmbRootCause" runat="server" Width="255px" OnSelectedIndexChanged="cmbRootCause_SelectedIndexChanged" AutoPostBack="true"
                CausesValidation="true">
                <asp:ListItem Value="0">Select</asp:ListItem>
                <asp:ListItem Value="1">Item1</asp:ListItem>
           </asp:DropDownList>
           <asp:RequiredFieldValidator ID="reqdFieldForRootCause" runat="server" ControlToValidate="cmbRootCause" InitialValue="Select" 
               ErrorMessage="Please select root cause" ValidationGroup="validateRootCause"  Visible="false" Display="Dynamic" EnableClientScript="true">
           </asp:RequiredFieldValidator>

...

SSL_Ticket.ascx.cs

    protected void cmbRootCause_SelectedIndexChanged(object sender, EventArgs e)
    {
        if (cmbRootCause.SelectedItem.ToString().Equals("Other"))
        {
            lblcmbRootCause.Text = "";
            lblcmbRootCause.Visible = false;
            txtRootCauseOther.Visible = true;
        }
        else if (cmbRootCause.SelectedItem.ToString().Equals("Select"))
        {
            lblcmbRootCause.Visible = true;
            lblcmbRootCause.Text = "Please select root cause";
        }
        else
        {
            lblcmbRootCause.Text = "";
            lblcmbRootCause.Visible = false;
            txtRootCauseOther.Visible = false;
        }
    }

我确实浏览了几个解决方案（ValidateProperty、客户端验证、RangeValidation 等），但它没有触发验证文本。

这没有帮助 -在用户控件中处理 RequiredFieldValidator

非常感谢您的帮助。

谢谢！！！

4

2 回答 2

0

从必填字段验证器中删除visible = false属性，默认情况下它们不会在开头显示。

<asp:RequiredFieldValidator ID="reqdFieldForRootCause" runat="server" ControlToValidate="cmbRootCause" InitialValue="Select" 
               ErrorMessage="Please select root cause" ValidationGroup="validateRootCause"  **Visible="false"** Display="Dynamic" EnableClientScript="true">
           </asp:RequiredFieldValidator>
于 2013-03-05T18:22:26.137 回答
0

那么在您的“RequiredFieldValidator”中，您DropDownList需要删除它：

InitialValue="Select"
于 2013-03-05T18:22:44.540 回答