如何发邮件，asp.net附件 [英] How to send mail with attachment in asp.net
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问题描述
这是我的尝试，我正在一个错误：
我SendMail.aspx
＆LT;！DOCTYPE HTML PUBLIC - // W3C // DTD XHTML 1.0过渡// ENhttp://www.w3.org/TR/xhtml1/DTD/ XHTML1-transitional.dtd＆GT;
＆LT; HTML的xmlns =http://www.w3.org/1999/xhtml＆GT;
＆LT;头=服务器＆GT;
＆LT;标题＆GT;＆LT; /标题＆GT;
＆LT; /头＆GT;
＆LT;身体GT;
＆LT;表ID =form1的=服务器＆GT;
＆LT; DIV＆GT;
＆LT;表样式=边界：1px的固体ALIGN =中心＆GT;
＆所述; TR＆GT;
＆所述; TD列跨度=2ALIGN =中心＆GT;
＆LT; B＆GT;发送邮件使用asp.net＆LT附件; / B＆GT;
＆LT; / TD＆GT;
＆LT; / TR＆GT;
＆所述; TR＆GT;
＆所述; TD＆GT;
从：
＆LT; / TD＆GT;
＆所述; TD＆GT;
＆LT; ASP：文本框ID =txtFrom=服务器＆GT;＆LT; / ASP：文本框＆GT;
＆LT; / TD＆GT;
＆LT; / TR＆GT;
＆所述; TR＆GT;
＆所述; TD＆GT;
至：
＆LT; / TD＆GT;
＆所述; TD＆GT;
＆LT; ASP：文本框ID =txtTo=服务器＆GT;＆LT; / ASP：文本框＆GT;
＆LT; / TD＆GT;
＆LT; / TR＆GT;
＆所述; TR＆GT;
＆所述; TD＆GT;
学科：
＆LT; / TD＆GT;
＆所述; TD＆GT;
＆LT; ASP：文本框ID =txtSubject=服务器＆GT;＆LT; / ASP：文本框＆GT;
＆LT; / TD＆GT;
＆LT; / TR＆GT;
＆所述; TR＆GT;
＆所述; TD＆GT;
附加文件：
＆LT; / TD＆GT;
＆所述; TD＆GT;
＆LT; ASP：文件上传ID =fileUpload1=服务器/＆GT;
＆LT; / TD＆GT;
＆LT; / TR＆GT;
＆所述; TR＆GT;
＆LT; TD VALIGN =顶＆GT;
身体：
＆LT; / TD＆GT;
＆所述; TD＆GT;
＆LT; ASP：文本框ID =txtBody=服务器的TextMode =多行栏目=30行=10＆GT;＆LT; / ASP：文本框＆GT;
＆LT; / TD＆GT;
＆LT; / TR＆GT;
＆所述; TR＆GT;
＆所述; TD＆GT;
＆LT; / TD＆GT;
＆所述; TD＆GT;
＆LT; ASP：按钮的ID =btnSubmit按钮的文本=发送=服务器的OnClick =btnSubmit_Click/＆GT;
＆LT; / TD＆GT;
＆LT; / TR＆GT;
＆LT; /表＆gt;
＆LT; / DIV＆GT;
＆LT; /表及GT;
＆LT; /身体GT;
＆LT; / HTML＆GT;
我SendMail.aspx.cs
使用System.Net.Mail;
使用System.Net;保护无效btnSubmit_Click（对象发件人，EventArgs的发送）
{
邮件MAILMESSAGE新= MAILMESSAGE（）;
mail.To.Add（txtTo.Text）;
//mail.To.Add(\"amit_jain_online@yahoo.com）;
mail.From =新的MailAddress（txtFrom.Text）;
mail.Subject = txtSubject.Text;
mail.Body = txtBody.Text;
mail.IsBodyHtml = TRUE; //采用FileUpload控件安装文件，并在文件中内存流
如果（fileUpload1.HasFile）
{
mail.Attachments.Add（新附件（fileUpload1.PostedFile.InputStream，fileUpload1.FileName））;
}
SmtpClient SMTP =新SmtpClient（）;
//或者您的SMTP服务器地址 的NetworkCredential NC =新的NetworkCredential（）;
nc.UserName =myusername@gmail.com;
nc.Password =输入mypassword;
smtp.Credentials = NC;
smtp.Port = 587;
smtp.Host =smtp.gmail.com;
smtp.UseDefaultCredentials = FALSE;
//或者你的SMTP电子邮件ID和密码
smtp.EnableSsl = TRUE;
smtp.Send（邮件）;
}
我得到这个错误不知道该怎么做：
SMTP服务器要求安全连接或客户端未通过身份验证。该>服务器响应为：5.5.1需要验证。
了解更多解决方案尝试端口465，而不是587，请。
如果我没有记错，Gmail使用587 TLS和465用于SSL。THIS IS MY ATTEMPT I AM GETTING AN ERROR:
My SendMail.aspx
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <title></title> </head> <body> <form id="form1" runat="server"> <div> <table style="border: 1px solid" align="center"> <tr> <td colspan="2" align="center"> <b>Send Mail with Attachment using asp.net</b> </td> </tr> <tr> <td> From: </td> <td> <asp:TextBox ID="txtFrom" runat="server"></asp:TextBox> </td> </tr> <tr> <td> To: </td> <td> <asp:TextBox ID="txtTo" runat="server"></asp:TextBox> </td> </tr> <tr> <td> Subject: </td> <td> <asp:TextBox ID="txtSubject" runat="server"></asp:TextBox> </td> </tr> <tr> <td> Attach a file: </td> <td> <asp:FileUpload ID="fileUpload1" runat="server" /> </td> </tr> <tr> <td valign="top"> Body: </td> <td> <asp:TextBox ID="txtBody" runat="server" TextMode="MultiLine" Columns="30" Rows="10"></asp:TextBox> </td> </tr> <tr> <td> </td> <td> <asp:Button ID="btnSubmit" Text="Send" runat="server" OnClick="btnSubmit_Click" /> </td> </tr> </table> </div> </form> </body> </html>
My SendMail.aspx.cs
using System.Net.Mail; using System.Net; protected void btnSubmit_Click(object sender, EventArgs e) { MailMessage mail = new MailMessage(); mail.To.Add(txtTo.Text); //mail.To.Add("amit_jain_online@yahoo.com"); mail.From = new MailAddress(txtFrom.Text); mail.Subject = txtSubject.Text; mail.Body = txtBody.Text; mail.IsBodyHtml = true; //Attach file using FileUpload Control and put the file in memory stream if (fileUpload1.HasFile) { mail.Attachments.Add(new Attachment(fileUpload1.PostedFile.InputStream, fileUpload1.FileName)); } SmtpClient smtp = new SmtpClient(); //Or Your SMTP Server Address NetworkCredential nc = new NetworkCredential(); nc.UserName="myusername@gmail.com"; nc.Password="mypassword"; smtp.Credentials = nc; smtp.Port = 587; smtp.Host = "smtp.gmail.com"; smtp.UseDefaultCredentials = false; //Or your Smtp Email ID and Password smtp.EnableSsl = true; smtp.Send(mail); }
I am getting this Error dont know what to do:
The SMTP server requires a secure connection or the client was not authenticated. The >server response was: 5.5.1 Authentication Required. Learn more at
解决方案Try port 465 instead of 587, please. If I remember correctly, gmail uses 587 for TLS and 465 for SSL.
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