.NET CustomValidator：阻止提交按钮

Question

我正在尝试将自定义字段验证器添加到一些遗留代码。如果电子邮件不属于某个域，它应该阻止表单触发。这是我的标记。<asp:Textbox id="tbEmail" autocomplete="off" CssClass="txt260" runat="server" TabIndex="1"></asp:Textbox>          <asp:RequiredFieldValidator id="rfvEmail" runat="server" Display="Dynamic" ForeColor="" ControlToValidate="tbEmail" ErrorMessage="Required" CssClass="ValidatorError">Required</asp:RequiredFieldValidator><asp:CustomValidator id="cfvEmail" runat="server" Display="Dynamic" ControlToValidate="tbEmail" ErrorMessage="Invalid Email" CssClass="ValidatorError" OnServerValidate="tbEmail_CustomValidate"></asp:CustomValidator><asp:RegularExpressionValidator id="regExpEmail" runat="server" Display="Dynamic" ForeColor="" ControlToValidate="tbEmail" ErrorMessage="Invalid" CssClass="ValidatorError"></asp:RegularExpressionValidator>...<asp:Button ID="bSubmit" Text=" CREATE ACCOUNT " CssClass="NewButton" runat="server" OnClientClick="DisabledUpdateButton()" OnClick="bSubmit_Click" />这是 C# 代码：protected void tbEmail_CustomValidate(object source, ServerValidateEventArgs args){    List<string> approvedEmailDomains = new List<string>()    {        "domainnameihid.com"    };    if (!approvedEmailDomains.Any(x => tbEmail.Text.EndsWith(x)))    {        args.IsValid = false;    }}当我写一个无效的域名时，代码落入args.IsValid = false。一旦 args.IsValid 为假，它仍然会继续触发提交按钮。必需和常规字段验证器没有。如何获取 CustomValidator 以防止按钮的 OnClick 触发或继续？

Answer 1

您还需要创建客户端验证。您可以使用ClientValidationFunctionValidator 来执行此操作。

<asp:CustomValidator ID="CustomValidator1" runat="server" ControlToValidate="tbEmail"

   ClientValidationFunction="allowedDomains" ErrorMessage="Not Valid"></asp:CustomValidator>

<script type="text/javascript">

    function allowedDomains(sender, element) {

        var approvedDomains = ['<%= string.Join("', '", approvedEmailDomains) %>'];

        element.IsValid = $.inArray(element.Value, approvedDomains) > -1;

    }

</script>

为此，您需要一个public列表

public List<string> approvedEmailDomains;

protected void Page_Load(object sender, EventArgs e)

{

    approvedEmailDomains = new List<string>()

    {

        "domainnameihid.com",

        "stackoverflow.com"

    };

}