"Contact Me" User Control


Lately I’ve been doing some ad-hoc on VWD, creating a few web sites, and there seem to be two pretty common things I put on those web sites, a “Contact Me” page, and a links page.  And seeing that there have been lots of changes to the email API’s between ASP.NET 1.x to 2.0, I thought I’d post my code here for you to see.  There are a few things to keep in mind with this.  First, I did it this way as I didn’t want to put my email address sitting in the open on my site, it makes it too easy for spammers to pick up.  But, I still face potential for people to automate a DOS attack against me.  I haven’t worked something in to fix that yet, but it’s not far out.


First, let’s see it in action: http://www.nocommonground.com/contact.aspx When you click, the send, it’ll send me an email.  Pretty obvious. 😉


Let’s look at the meat of the code. This is where we actually send the mail.


protected void butCancel_Click(object sender, EventArgs e)
{
ClearMessage();
}

private void ClearMessage()
{
tbEmail.Text = “”;
tbMessage.Text = “”;
tbName.Text = “”;
tbSubject.Text = “”;
lblSent.Visible = false;
}

protected void butSend_Click(object sender, EventArgs e)
{
lblSent.Visible = false;
System.Net.Mail.MailAddress maMe = new System.Net.Mail.MailAddress(“EMAIL ADDRESS GOES HERE”, “Pete LePage”);
System.Net.Mail.MailAddress maFrom = new System.Net.Mail.MailAddress(tbEmail.Text, tbName.Text);
System.Net.Mail.MailMessage msg = new System.Net.Mail.MailMessage();
msg.To.Add(maMe);
msg.From = maFrom;
msg.Subject = “[BBPPhoto] ” + tbSubject.Text;
msg.Body = tbMessage.Text + “\r\n\r\nRemote IP Address: ” + Request.UserHostAddress;
System.Net.Mail.SmtpClient smtpClient = new System.Net.Mail.SmtpClient(“SMTP SERVER GOES HERE”);
smtpClient.UseDefaultCredentials = true;
smtpClient.Send(msg);
ClearMessage();
lblSent.Visible = true;
}


Sweet, the .NET Framework uses System.Net.Mail.MailAddress instead of the text, which make things a bit easier, you can set display names, and a few other properties.  It also makes it much easier to send an email to multiple people, as it’s just a collection of addresses.


I’m also tracking their IP address. This allows me to see where they are sending the email from, so if I do start go get major spam or anything like that, I can easily block them.


What about the HTML though?

<table width=”60%”>
<tr>
<td width=”30%”>
Name:<asp:RequiredFieldValidator ID=”rfvName” runat=”server” ControlToValidate=”tbName”
ErrorMessage=”*”></asp:RequiredFieldValidator></td>
<td width=”70%”>
<asp:TextBox Style=”width: 100%” ID=”tbName” runat=”server” /></td>
</tr>
<tr>
<td>
Email:<asp:RegularExpressionValidator ID=”revEmail” runat=”server” ControlToValidate=”tbEmail”
ErrorMessage=”*” ValidationExpression=”\w+([-+.’]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*”></asp:RegularExpressionValidator>
<asp:RequiredFieldValidator ID=”rfvEmail” runat=”server” ControlToValidate=”tbEmail”
ErrorMessage=”*”></asp:RequiredFieldValidator></td>
<td>
<asp:TextBox Style=”width: 100%” ID=”tbEmail” runat=”server” /></td>
</tr>
<tr>
<td>
Subject:<asp:RequiredFieldValidator ID=”rfvSubject” runat=”server” ControlToValidate=”tbSubject”
ErrorMessage=”*”></asp:RequiredFieldValidator></td>
<td>
<asp:TextBox Style=”width: 100%” ID=”tbSubject” runat=”server” /></td>
</tr>
<tr>
<td colspan=”2″>
Message:<asp:RequiredFieldValidator ID=”rfvMessage” runat=”server” ControlToValidate=”tbMessage”
ErrorMessage=”*”></asp:RequiredFieldValidator><br />
<asp:TextBox ID=”tbMessage” runat=”server” TextMode=”MultiLine” Height=”200px” Width=”100%” />
<br />
<asp:Button ID=”butSend” runat=”server” Text=”Send” OnClick=”butSend_Click” />
<asp:Button ID=”butCancel” runat=”server” Text=”Cancel” OnClick=”butCancel_Click”
CausesValidation=”False” />
</td>
</tr>
</table>
<asp:Label ID=”lblSent” runat=”server” Text=”Your message has been sent!” Visible=”false” />

So, it’s just a bunch of text boxes, and some validators. I want to make sure they put in a valid reply-to address, even if it isn’t theirs. I could CC them on the message, but then I’m immediately giving away my address, which is something that I’m trying to protect.


I’ve gone and put all this code in a user control, and can use it all over my site, and then easily copy it to other sites that I have.

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