Asp.net 无法获得焦点损失

我目前正在处理 asp.net 表单，这是我的第一个网页，所以我试图让 OnBlur 事件工作，但我无法做到。

这是我的代码：-

联系方式.aspx

<%@ Page Language="C#" MasterPageFile="MasterPage.master" AutoEventWireup="true" CodeFile="contact.aspx.cs" Inherits="contact" Title="Contact Us" %>
<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">
<title>Sugarsnooper | Contact Us</title>
<meta name="keyword" content=""/>
<meta name="Description" content=""/>
<meta name="key-phrases" content=""/>
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
<section class="content-page"><div class="container"><div class="row">
<div class="col-md-12"><h1>Contact Us</h1></div>
<div class="col-md-8">
<h4>Enquiry Form</h4>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Always" ChildrenAsTriggers="true">
<ContentTemplate>
<div class="col-lg-12 form-group">
<div class="row">
<input name="name" runat="server" type="text" id="name2" class="form-control" placeholder="Enter Your Name">
<asp:Label ID="invalidname" runat="server" Text=""/>
</div>
</div>
<div class="col-lg-12 form-group">
<div class="row">
<input name="website" runat="server" type="text" id="cont2" class="form-control" placeholder="Enter Mobile Number">
<asp:Label ID="invalidmobile" runat="server" Text=""/>    
</div>
</div>
<div class="col-lg-12 form-group">
<div class="row">
<input onblur="validate()" name="email" runat="server" type="text" id="email3" class="form-control" placeholder="Enter Your Email ID">
<asp:Label ID="invalidemail" runat="server" Text=""/>
</div>
</div>
<div class="col-lg-12 form-group">
<div class="row">
<textarea name="message" runat="server" id="msg2" class="form-control" placeholder="Enter Your Message.." rows="6"></textarea>
<asp:Label ID="invalidmessage" runat="server" Text=""/>
</div>
</div>
<div class="col-lg-12 form-group">
<div class="row">
<input type="submit" class="btn btn-primary" id="enquiry_post" value="Send"             
runat="server" onserverclick="enquiry_post_click"/>
<asp:Label style="margin: 60" ID="message" runat="server" Text=""/>
</div>

</div>
</ContentTemplate>
</asp:UpdatePanel>
</form>
</div>
<div class="col-md-4"><h4>Contact Info</h4>
<table class="table">
<tr>
<td>Email</td>
<td><a href="mailto:support@SugarSnooper.com">support@SugarSnooper.com</a></td>
</tr>
<tr style="display:none;">
<td>Helpline No.</td>
<td>xxx xxx xxxx</td>
</tr>
</table>
</div>
</div></div></section>
</asp:Content>

联系方式.aspx.cs

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Text.RegularExpressions;
using System.Drawing;
public partial class contact : System.Web.UI.Page
{

//private Regex regex = new Regex(@"^([w.-]+)@([w-]+)((.(w){2,3})+)$");

int i = 0;
private static Regex EmailValidation()
{
const string pattern = @"^((([a-z]|d|[!#$%&'*+-/=?^_`{|}~]|[u00A0-uD7FFuF900-uFDCFuFDF0-uFFEF])+(.([a-z]|d|[!#$%&'*+-/=?^_`{|}~]|[u00A0-uD7FFuF900-uFDCFuFDF0-uFFEF])+)*)|((x22)((((x20|x09)*(x0dx0a))?(x20|x09)+)?(([x01-x08x0bx0cx0e-x1fx7f]|x21|[x23-x5b]|[x5d-x7e]|[u00A0-uD7FFuF900-uFDCFuFDF0-uFFEF])|(\([x01-x09x0bx0cx0d-x7f]|[u00A0-uD7FFuF900-uFDCFuFDF0-uFFEF]))))*(((x20|x09)*(x0dx0a))?(x20|x09)+)?(x22)))@((([a-z]|d|[u00A0-uD7FFuF900-uFDCFuFDF0-uFFEF])|(([a-z]|d|[u00A0-uD7FFuF900-uFDCFuFDF0-uFFEF])([a-z]|d|-|.|_|~|[u00A0-uD7FFuF900-uFDCFuFDF0-uFFEF])*([a-z]|d|[u00A0-uD7FFuF900-uFDCFuFDF0-uFFEF]))).)+(([a-z]|[u00A0-uD7FFuF900-uFDCFuFDF0-uFFEF])|(([a-z]|[u00A0-uD7FFuF900-uFDCFuFDF0-uFFEF])([a-z]|d|-|.|_|~|[u00A0-uD7FFuF900-uFDCFuFDF0-uFFEF])*([a-z]|[u00A0-uD7FFuF900-uFDCFuFDF0-uFFEF]))).?$";
const RegexOptions options = RegexOptions.Compiled | RegexOptions.IgnoreCase | RegexOptions.ExplicitCapture;
// Set explicit regex match timeout, sufficient enough for email parsing
// Unless the global REGEX_DEFAULT_MATCH_TIMEOUT is already set
TimeSpan matchTimeout = TimeSpan.FromSeconds(2);
try
{
if (AppDomain.CurrentDomain.GetData("REGEX_DEFAULT_MATCH_TIMEOUT") == null)
{
return new Regex(pattern, options, matchTimeout);
}
}
catch
{
// Fallback on error
}
// Legacy fallback (without explicit match timeout)
return new Regex(pattern, options);
}

private bool IsValidPhoneNumber(string num)
{
var phoneNumber = num.Trim()
.Replace(" ", "")
.Replace("-", "")
.Replace("(", "")
.Replace(")", "");
return Regex.Match(phoneNumber, @"^+d{5,15}$").Success || Regex.Match(phoneNumber, @"^d{5,15}$").Success;
}
private bool validateemailandupdate(){
string emailid = email3.Value;
if(emailid.Length > 0){
Match match = EmailValidation().Match(emailid);
if(!match.Success){
invalidemail.ForeColor = Color.Red;
invalidemail.Font.Bold = true;
invalidemail.Text = "Email is Invalid";
return false;
}
invalidemail.Text = "";
return true;
}
else{
invalidemail.ForeColor = Color.Red;
invalidemail.Font.Bold = true;
invalidemail.Text = "This Field is Required";
return false;
}
}

private bool validatemobileandupdate(){
string mobile = cont2.Value;
if(mobile.Length > 0){
bool isalldigits = IsValidPhoneNumber(mobile);
bool islengthenough = mobile.Length > 5;
bool islengthless = mobile.Length < 16;
bool isnumbervalid = isalldigits && islengthenough && islengthless;
if(isnumbervalid){
invalidmobile.Text = "";
return true;
}
invalidmobile.ForeColor = Color.Red;
invalidmobile.Font.Bold = true;
invalidmobile.Text = "Please enter a Valid Phone Number";
return false;
}
else{
invalidmobile.ForeColor = Color.Red;
invalidmobile.Font.Bold = true;
invalidmobile.Text = "This Field is Required";
return false;
}
}

private bool validatenameandupdate(){
string name = name2.Value;
if(name.Length > 50){
invalidname.ForeColor = Color.Red;
invalidname.Font.Bold = true;
invalidname.Text = "Name Too Long";
return false;
}
if(name.Length < 1){
invalidname.ForeColor = Color.Red;
invalidname.Font.Bold = true;
invalidname.Text = "This Field is Requred";
return false;
}
invalidname.Text = "";
return true;
}

private bool validatemsgandupdate(){
string msg = msg2.Value;
if(msg.Length > 0){
invalidmessage.Text = "";
return true;
}
else{
invalidmessage.ForeColor = Color.Red;
invalidmessage.Font.Bold = true;
invalidmessage.Text = "This Field is Requred";
return false;
}
}

protected void Page_Load(object sender, EventArgs e)
{
//msg2.Attributes.Add("OnBlur", "return validate()");
}

public void validate(){
i++;
//bool isemailvalid = validateemailandupdate();
//bool ismobilevalid = validatemobileandupdate();
//bool isnamevalid = validatenameandupdate();
//bool ismsgvalid = validatemsgandupdate();
//UpdatePanel1.Update();
}

protected void enquiry_post_click(object sender, EventArgs e){
bool isemailvalid = validateemailandupdate();
bool ismobilevalid = validatemobileandupdate();
bool isnamevalid = validatenameandupdate();
bool ismsgvalid = validatemsgandupdate();
bool result = isemailvalid && ismobilevalid && isnamevalid && ismsgvalid;
message.Text = i.ToString();
if (result){
cont2.Value = "";
email3.Value = "";
name2.Value = "";
msg2.Value = "";
}
}
}

我尝试使用onfocusout，但也没有用。我还尝试使用onblur="validate();"和onblur="return validate();"和 2 或 3 个变体，但没有一个有效请帮忙提前谢谢。

首先，使用像asp:TextBox这样的控件，而不是input-control。

<asp:TextBox ID="email3" CssClass="form-control" AutoPostBack="true" runat="server"/>

如果要对服务器端的更改做出反应，请添加AutoPostBack并使用 changed 事件 - 因此在代码隐藏中：

protected void Page_Init(object sender, EventArgs e)
{
email3.TextChanged += Email3_TextChanged;
}
private void Email3_TextChanged(object sender, EventArgs e)
{
validate();
}

如果要添加一些验证，可以向页面添加验证器，如下所示

<asp:RegularExpressionValidator ID="regexEmailValid" runat="server" ValidationExpression="w+([-+.]w+)*@w+([-.]w+)*.w+([-.]w+)*" ControlToValidate="email3" ErrorMessage="Invalid Email Format"></asp:RegularExpressionValidator>

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