我以前遇到过这个问题,但从来没有完全解决过。我有一个包含多个验证器和一个 CustomValidator 的表单。
<asp:Label ID="lblMemberNum" runat="server" Text="Membership #:" CssClass="LabelMedium" ></asp:Label>
<asp:TextBox ID="txtMemberNum" runat="server" CssClass="TextBox" ></asp:TextBox>
<asp:RequiredFieldValidator ID="rfvMemberNum" SetFocusOnError="True" runat="server"
ControlToValidate="txtMemberNum" ErrorMessage="[ Membership # ] is required"
CssClass="ValidationMessage" Display="Dynamic" >*</asp:RequiredFieldValidator>
<asp:RegularExpressionValidator ID="revMemberNum" Display="Dynamic" runat="server"
ControlToValidate="txtMemberNum" CssClass="ValidationMessage"
ErrorMessage="[ Membership # ] can only contain letters"
ValidationExpression="^([a-zA-Z\d]+)$" >*</asp:RegularExpressionValidator>
<asp:CustomValidator ID="cvMemberNum" runat="server"
CssClass="ValidationMessage" Display="Dynamic"
ControlToValidate="txtMemberNum" ValidateEmptyText="false"
OnServerValidate="cvMemberNum_Validate"
ErrorMessage="This membership number is already registered">*</asp:CustomValidator>
<asp:ValidationSummary ID="ValidationSummary1" runat="server"
CssClass="ValidationMessage"
ShowMessageBox="True" ShowSummary="False" />
在服务器端:
protected void cvMemberNum_Validate(object source, ServerValidateEventArgs args)
{
try
{
args.IsValid = (!CampaignRegistration.IsMemberRegistered(args.Value));
}
catch
{
args.IsValid = false;
}
}
我的问题是:ValidationSummary 从不显示来自 CustomValidator 的消息。这个问题在很多地方都被问过,但我还没有看到满意的答案。