如何检查验证器是否在页面上验证和验证失败

Question

我在页面上有多个验证器，当单击“提交”按钮时它们都可以正常工作

但是，当我通过下拉选择的索引更改事件启动回发时，我需要检查验证器是否失败，以便失败的验证消息正确保留

换句话说，我正在尝试检查某个验证器是否刚刚被触发并失败

我尝试了以下方法

我检查了 isValid 属性，但无论如何它总是正确的
我试图检查 Page.IsValid 方法，但没有前一个方法就失败了 Page.Validate() 调用
我尝试检查失败消息是否可见并存在，但没有验证器的此类选项

因此，有没有办法检查所需的验证器是否刚刚被触发并失败了？

看起来很简单，但我仍然找不到解决方案

非常感谢您

Answer 1

想出了解决办法

HTML

    <asp:UpdatePanel runat="server" id="UpdatePanel1">
    <ContentTemplate>

    <table class="innerTable" border="0">
      <tr>
    <td>
        <asp:DropDownList  CssClass="textboxwidth" runat="server" ID="ddOrg" AutoPostBack="true" OnSelectedIndexChanged="ddOrg_SelectedIndexChanged" setCausesValidation="true"></asp:DropDownList>
        <asp:RequiredFieldValidator SetFocusOnError="true" ID="RequiredFieldValidator3" runat="server" Display="Dynamic" ControlToValidate="ddOrg" InitialValue="" ErrorMessage="* Required"></asp:RequiredFieldValidator>
        <input type="hidden" id="hdFirmValidator" runat="server" />
        <input type="hidden" id="hdPhoneValidator" runat="server" />
        <input type="hidden" id="hdPhoneValidatorRegex" runat="server" />
    </td>
</tr>
<tr>
    <td>
        <asp:TextBox ID="txtOrgOther" Enabled="false" CssClass="textboxwidth" MaxLength="100" runat="server"></asp:TextBox>
        <asp:RequiredFieldValidator SetFocusOnError="true" ID="RequiredFieldValidator12" Enabled="false" runat="server" Display="Dynamic" ControlToValidate="txtOrgOther" ErrorMessage="* Required" ></asp:RequiredFieldValidator>
    </td>
</tr>
<tr>
    <td>
        <asp:TextBox CssClass="textboxwidth" ID="txtOrgAddress" TextMode="MultiLine" runat="server"></asp:TextBox>
        <asp:RequiredFieldValidator SetFocusOnError="true" ID="RequiredFieldValidator14" runat="server" Display="Dynamic" ControlToValidate="txtOrgAddress" ErrorMessage="* Required" ></asp:RequiredFieldValidator>
    </td>
</tr>
<tr>
<td>
<asp:TextBox CssClass="textboxwidth" ID="txtOrgPhone" runat="server" MaxLength="30"></asp:TextBox>
<asp:RequiredFieldValidator SetFocusOnError="true" ID="RequiredFieldValidator15" runat="server" Display="Dynamic" ControlToValidate="txtOrgPhone" ErrorMessage="* Required" ></asp:RequiredFieldValidator>
<asp:RegularExpressionValidator ID="regexPhone1" ValidationExpression="^.{0,30}" ErrorMessage="*Enter upto 30 digit phone number" runat="server" ControlToValidate="txtOrgPhone"></asp:RegularExpressionValidator>
</td>
              </tr>
       </table>
</ContentTemplate>

JavaScript

    window.onload = function () {

    var btnSubmit = document.getElementById("<%=btnSubmit.ClientID%>");
    function SetHiddenFields() {

    var firmValidator = document.getElementById("<%=RequiredFieldValidator14.ClientID%>");
    var hdFirmValidator = document.getElementById("<%=hdFirmValidator.ClientID%>");
    hdFirmValidator.value = firmValidator.style.display;

    var phoneValidator = document.getElementById("<%=RequiredFieldValidator15.ClientID%>");
    var hdPhoneValidator = document.getElementById("<%=hdPhoneValidator.ClientID%>");
    hdPhoneValidator.value = phoneValidator.style.display;

    var phoneValidatorRegEx = document.getElementById("<%=regexPhone1.ClientID%>");
    var hdPhoneValidatorRegex = document.getElementById("<%=hdPhoneValidatorRegex.ClientID%>");
    hdPhoneValidatorRegex.value = phoneValidatorRegEx.style.display;

    return true;

}

btnSubmit.onclick = SetHiddenFields; }

代码隐藏

    protected void ddOrg_SelectedIndexChanged(object sender, EventArgs e)
    {
        //Srver side code

        RequiredFieldValidator3.Validate();

        if (hdFirmValidator.Value != string.Empty)
        {
            RequiredFieldValidator14.Validate();
        }

        if (hdPhoneValidator.Value != string.Empty)
        {
            RequiredFieldValidator15.Validate();
        }

        if (hdPhoneValidatorRegex.Value != string.Empty)
        {
            regexPhone1.Validate();
        }

    }

如何检查验证器是否在页面上验证和验证失败

How to check if the validator validated and failed validation on the page

c#

asp.net

requiredfieldvalidator