Asp.Net-CustomValidator的ErrorMessage-仅在ValidationSummary上显示-不在其他地方

Question

这里是ASPX：

<form id="form1" runat="server">
    <div>
        <fieldset style="width: 160px">

            <legend>Select your skills</legend>

            <asp:ValidationSummary ID="ValidationSummary1" runat="server" />

            <asp:CheckBoxList ID="cblCourses" runat="server" RepeatColumns="2">

                <asp:ListItem>Asp.net</asp:ListItem>

                <asp:ListItem>C#</asp:ListItem>

                <asp:ListItem>VB</asp:ListItem>

                <asp:ListItem>WCF</asp:ListItem>

                <asp:ListItem>Jquery</asp:ListItem>

                <asp:ListItem>JavaScript</asp:ListItem>

            </asp:CheckBoxList>

            <asp:Label ID="lblStatus" runat="server" Text=""></asp:Label>

            <asp:CustomValidator ID="CustomValidator1" runat="server" ErrorMessage="Please select at least one skills." ClientValidationFunction="validateCheckBoxList" Display="Dynamic" ForeColor="Red"></asp:CustomValidator>

            <asp:Button ID="btnSubmit" runat="server" Text="Submit" OnClick="btnSubmit_Click" Style="height: 26px" />

        </fieldset>

    </div>
</form>

这里是javascript：

<script type = "text/javascript">

    function validateCheckBoxList(source, args) {

        var chkListModules = document.getElementById('<%= cblCourses.ClientID %>');

        var chkListinputs = chkListModules.getElementsByTagName("input");

        for (var i = 0; i < chkListinputs.length; i++) {

            if (chkListinputs[i].checked) {

                args.IsValid = true;

                return;

            }

        }

        args.IsValid = false;

    }

</script>

问题是，当我单击btnSubmit按钮时，出现两个错误消息。ValidationSummary中的一个。btnSubmit按钮旁边的另一个。我如何告诉CustomValidator仅在ValidationSummary中显示它的消息，而不在其他地方显示？

Answer 1

您可以使用display：none将CustomValidator包装在div或span中。该错误仍显示在摘要中，但无其他地方：-

            <span style="display:none;">
                <asp:CustomValidator ID="CustomValidator1" runat="server" ErrorMessage="Please select at least one skills." ClientValidationFunction="validateCheckBoxList" Display="Dynamic" ForeColor="Red"></asp:CustomValidator>
            </span>

您应该为div / span创建一个类，而不是内联样式，这只是为了演示它的工作。