Question

Id想知道如何在更改下拉列表值后禁用验证器，而不必按提交：

<asp:DropDownList ID="ddlAttendance" DataTextField="name" DataValueField="Id" runat="server"
                                        DataSourceID="sdsAppointmentStatuses" CssClass="form-control"  
                                        >
                                    </asp:DropDownList>
                                    <asp:TextBox CssClass="form-control" ID="txtAttendanceNotes" runat="server" Rows="2" TextMode="MultiLine"></asp:TextBox>
                                    <asp:RequiredFieldValidator ID="rfvNotes" runat="server" ErrorMessage="A Note is required with this status" 
                                        Display="Dynamic" CssClass="text-error" ControlToValidate="txtAttendanceNotes" Enabled="false"></asp:RequiredFieldValidator>

JavaScript

<script type="text/javascript">
function validate(vcontol, dropDownList) {
    var returnStr = '<%=NotesData() %>';
    var bb = JSON.parse(returnStr);

    for (var i = 0; i < bb.length; i++)
    {
        if (dropDownList.value == bb[i]) {
            vcontol.enabled = true;
        }
    }
}
</script>

Answer 1

这里是解决相同问题的链接。将复选框替换为您的下拉值。 asp:RequiredFieldValidator validation based on conditions

如何在下拉列表更改ASP.Net之后立即禁用/启用验证器

1 个答案: