Nowadays, with the rapid development of Internet, many enterprises have built their own websites, which can be used to carry out e-commerce activities, such as releasing and managing the enterprise's own supply and demand information, and developing and managing the members of the enterprise. In addition to these, there is also a point is very important, is to all enterprises registered members to send e-mail, timely notify users of the company's latest news.
Microsoft has been introducing Visual Studio.NET for some time, and some users who used to use ASP to develop Web applications now slowly have an ASP to turn to the ASP.net platform. In order to be able to help some users who want to use asp.net to develop mail delivery system to successfully complete this function, we will discuss this issue together.
I. ASPX operating environment
Because the BETA1 and Beta2 two versions of Microsoft's published. NET Framework SDK are very different, this is an example of a Beta2 version.
Introduction of SMTP protocol
SMTP protocol, which is the abbreviation for Simple Mail Transfer Protocol (plain mail Transfer Protocol). General letter of the software, such as Outlook Express, Foxmail, etc. are used to send and relay mail.
Iii. name Space (NameSpace)
Describes the objects, properties, and methods used in the program in this article to use the namespace (NameSpace)-system.web.mail (referred to in the. NET Framework SDK Beta1 version, called System.Web.Util), to send messages.
1, objects (object)
The System.Web.Mail namespace is used to send messages with three objects, such as SmtpMail, MailMessage, and MailAttachment, as described below.
2, Attributes (propertiy)
The primary property of the System.Web.Mail namespace is the property of the MailMessage object, and the following table lists the names of the MailMessage object properties and their meanings:
Attribute names represent meaning
From sender address (source address)
To recipient address (destination system)
Subject message Headers
Priority message priority (High,low,normal)
Attachment Mail Attachment
BCC Dark Send Address
CC CC Address
Body message bodies
BodyFormat message Format (HTML format, text format)
Bodyencoding Encoding (Base64,uuencode)
3. Methods (method)
Send method, the message is sent through the Send method. There are two ways to call this method:
1 Smtpmail.send ("Source Address", "Destination Address", "subject", "content")
2) smtpmail.send (MailMessage)
Note: This is the second method of invocation.
Iv. Program source code (programming script language for vb.net)
<%@ Page language= "VB" runat= "Server"%>
<script runat= "Server" >
Sub Button1_Click (sender as Object, E as EventArgs)
Dim Strfrom,strto,strbcc,strcc,title,conttext
Strfrom =textbox1.text
Strto =textbox2.text
STRBCC =textbox3.text
STRCC =textbox4.text
Title =textbox5.text
Conttext =textbox6.text
Dim objmail as New MailMessage
Dim SMTP as New smtpmail
Smtp.smtpserver= "Smtp.163.com" defines the name of the server
Select Case Objmail
. From= Strfrom
. To= Strto
. Bcc= STRBCC
. Cc= STRCC
. subject= Title
. body= Conttext
. bodyformat= mailformat.html
. priority= Mailpriorty.high
End Select
Smtp.send (objmail)
End Sub
</script>
<body>
<form runat= "Server" >
<p>
Receiver: <asp:textbox id= "TextBox1" runat= "Server" >
</asp:TextBox>
</p>
<p>
Sender: <asp:textbox id= "TextBox2" runat= "Server" ></asp:TextBox>
</p>
<p>
Dark Send: <asp:textbox id= "TextBox3" runat= "Server" ></asp:TextBox>
</p>
<p>
CC: <asp:textbox id= "TextBox4" runat= "Server" ></asp:TextBox>
</p>
<p>
Topic: <asp:textbox id= "TEXTBOX5" runat= "Server" ></asp:TextBox>
</p>
<p>
Content: <asp:textbox id= "TextBox6" runat= "Server" ></asp:TextBox>
</p>
<p>
<asp:button id= "Button1" runat= "Server"
text= "Send" >
</asp:Button>
</p>
</form>
</body>
V. Summary
In the past, when Microsoft did not launch the ASP.net, we used ASP to do a mail delivery system is very complicated, is a very difficult thing, now good, Microsoft has recently launched the. NET Framework SDK Beta2 version, The use of System.Web.Mail namespaces is a powerful class library, making it easier for us to do this work.
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