My problem is that My asp.net Button’s onclick behaviour does not work because on code behind btnSendMail_Click show’s 0 reference. I added my code and code behind and my error’s message. Normally I have used this method several times but this time I couldn’t do it.
Some of my html code
<div class="col-lg-8" runat="server">
<div class="contact-form section-top-gap-100" data-aos="fade-up" data-aos-delay="200">
<asp:Label Text="<%$Resources:Lang, ContactUs %>" runat="server" Font-Size="Large" Font-Bold="true"></asp:Label>
<div id="contact-form">
<div class="row">
<div class="col-lg-6">
<div class="default-form-box mb-20">
<asp:Label Text="<%$Resources:Lang, Name %>" runat="server" Font-Bold="true"></asp:Label>
<input name="name" type="text" id="contactName" runat="server" placeholder="<%$Resources:Lang, NamePlaceHolder %>" >
</div>
</div>
<div class="col-lg-6">
<div class="default-form-box mb-20">
<asp:Label Text="<%$Resources:Lang, mail %>" runat="server" Font-Bold="true"></asp:Label>
<input name="email" type="email" id="contactEmail" runat="server" placeholder="<%$Resources:Lang, mailPlaceHolder %>" >
</div>
</div>
<div class="col-lg-12">
<div class="default-form-box mb-20">
<asp:Label Text="<%$Resources:Lang, subject %>" runat="server" Font-Bold="true"></asp:Label>
<input name="subject" type="text" id="contactSubject" runat="server" placeholder="<%$Resources:Lang, SubjectPlaceHolder %>">
</div>
</div>
<div class="col-lg-12">
<div class="default-form-box mb-20">
<asp:Label Text="<%$Resources:Lang, message %>" runat="server" Font-Bold="true"></asp:Label>
<textarea name="message" id="contactMessage" cols="30" rows="10" runat="server" placeholder="<%$Resources:Lang, MessagePlaceHolder %>" ></textarea>
</div>
</div>
<div class="col-lg-12">
<asp:Button runat="server" CssClass="contact-submit-btn" Text="<%$Resources:Lang, sendMessage %>" ID="btnSendMail" OnClick="btnSendMail_Click" UseSubmitBehavior="true"/>
</div>
<p class="form-messege"></p>
</div>
</div>
</div>
</div>
My code behind
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Mail;
using System.Net.Security;
using System.Security.Cryptography.X509Certificates;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace AsjSpray.Web.Pages
{
public partial class Iletisim : BasePage
{
#region Properties
public static readonly log4net.ILog log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
#endregion
protected void Page_Load(object sender, EventArgs e)
{
Page.Title = "AsjSpray " + Resources.Lang.ContactUs;
log.Info("İletişim Sayfasına girildi");
}
private static string GetIp()
{
string VisitorsIPAddress = string.Empty;
try
{
if (HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"] != null)
{
VisitorsIPAddress = HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"].ToString();
}
else if (HttpContext.Current.Request.UserHostAddress.Length != 0)
{
VisitorsIPAddress = HttpContext.Current.Request.UserHostAddress;
}
}
catch (Exception ex)
{
log.Error("Hata [Iletisim.GetIp()]" + ex.Message);
}
return VisitorsIPAddress;
}
bool IsValidEmail(string email)
{
try
{
var addr = new System.Net.Mail.MailAddress(email);
return addr.Address == email;
}
catch
{
return false;
}
}
protected void btnSendMail_Click(object sender, EventArgs e)
{
var senderMessage = contactMessage.Value;
var senderName = contactName.Value;
var senderMail = contactEmail.Value;
var subject = contactSubject.Value;
var ipAddress = GetIp();
SmtpClient smtpClient = new SmtpClient();
NetworkCredential basicCredential = new NetworkCredential("[email protected]", "pass");
MailMessage message = new MailMessage();
MailAddress fromAddress = new MailAddress("[email protected]");
smtpClient.Host = "mail.asjspray.com";
smtpClient.UseDefaultCredentials = false;
smtpClient.Credentials = basicCredential;
smtpClient.Port = 587;
smtpClient.EnableSsl = true;
message.From = fromAddress;
message.Subject = subject;
//Set IsBodyHtml to true means you can send HTML email.
message.IsBodyHtml = true;
message.Body = "Gönderici adı: " + senderName + "<br/> Gönderici maili: " + senderMail + "<br/> Gönderici mesajı: " + senderMessage + "<br/> Gönderici ip adresi: " + ipAddress; ;
message.To.Add("[email protected]");
message.Bcc.Add("");
try
{
ServicePointManager.ServerCertificateValidationCallback = delegate (object s,
X509Certificate certificate,
X509Chain chain,
SslPolicyErrors sslPolicyErrors)
{
return true;
};
if (senderMessage != null && senderName != null &&
senderMail != null)
{
smtpClient.Send(message);
ScriptManager.RegisterStartupScript(this, GetType(), "CallFunction", "successful();", true);
log.Info("Mail gönderme başarılı mail adresi: " + senderMail);
}
else if (IsValidEmail(senderMail) == false)
{
ScriptManager.RegisterStartupScript(this, GetType(), "CallFunction", "emptyMail();", true);
log.Warn("Mail gönderilmedi mail geçersiz " + senderMail);
}
else
{
ScriptManager.RegisterStartupScript(this, GetType(), "CallFunction", "hata();", true);
log.Error("Mail gönderilmedi");
}
}
catch (Exception ex)
{
log.Error("Hata, Mail gönderilemedi " + ex.Message);
Response.Write(ex.Message);
Page.Response.Write("<script>console.log('" + ex.Message + "');</script>");
}
}
}
}
My Error Image
As you can see button_click’s reference is 0.
2
Answers
I solved the problem. It is because I have "required" property in MasterPage search bar. It prevented click to button.
You could double check the click event.
What most don’t realize? Well, if you nest a button in a gridview, repeater, etc?
Well, now you can’t just click on the button and jump right to the event stub (and it automatic – always nice).
but, you CAN get VS to generate the event stub for you. (erase your existing onclick in the button markup, and try this.
Type in onclick=
When you hit "=", then intel-sense should pop up this:
So, click on create new event. It LOOKS like nothing occured, but if you now flip to code behind, then you see the code stub.
Give above a try – you should not even need that UseSubmit behavour.