请专家解析哈asp.net中邮件自动发送的问题

hecong875
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可用分等级：短工
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发表于：2008-04-24 18:51:505楼得分:8

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Collections.Generic;
using System.Drawing;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Net.Mail;
using OnMost.Utility.Entity;
using OnMost.Utility.BusinessRule;

public partial class E_Mail_Sys_Frm_SentMail : System.Web.UI.UserControl
{
static public ArrayList hif = new ArrayList();
public int filesUploaded = 0;
protected void Page_Load(object sender, EventArgs e)
{
if (!this.IsPostBack)
{
MstEmpInfoEntity EmpInfoEntity = new MstEmpInfoEntity();
SessionEntity session = (SessionEntity)Session["SysSessionData"];
if (session.BusinessData as MstEmpInfoEntity != null)
{
EmpInfoEntity = (MstEmpInfoEntity)session.BusinessData;
if (EmpInfoEntity.Mail != "")
{
this.txtmailto.Text = (EmpInfoEntity.Mail).Substring(0, (EmpInfoEntity.Mail).Length - 1);
}
}
}
}
/// <summary>
/// 初始化控件
/// </summary>
public void Pageload()
{
this.txtmailto.Text = string.Empty;
this.txtmailtitle.Text = string.Empty;
this.txtmailcontent.Value = string.Empty;
this.lbFile.Items.Clear();
hif.Clear();
}
/// <summary>
/// 增加附件
/// </summary>
/// <param name="sender"> </param>
/// <param name="e"> </param>
protected void AddFile(object sender, EventArgs e)
{
if (Page.IsPostBack == true)
{
try
{
hif.Add(FindFile);
lbFile.Items.Add(FindFile.PostedFile.FileName);
}
catch(System.Exception ex)
{
lblErr.Text = ex.Message;
}
}

}
/// <summary>
/// 附件删除
/// </summary>
/// <param name="sender"> </param>
/// <param name="e"> </param>
protected void RemvFile_Click(object sender, EventArgs e)
{
if (lbFile.SelectedIndex == -1)
{
lblErr.Text = "错误！请选择要删除的文件！";
}
else if(lbFile.Items.Count != 0)
{
hif.RemoveAt(lbFile.SelectedIndex);
lbFile.Items.Remove(lbFile.SelectedItem.Text);
lblErr.Text = "";

}

}

/// <summary>
/// 邮件发送
/// </summary>
/// <param name="sender"> </param>
/// <param name="e"> </param>
protected void SentMail(object sender, EventArgs e)
{
SmtpClient smtp = new SmtpClient();
MailMessage mail = new MailMessage();
string[] strFlie = null;
string baseLocation = Server.MapPath("UploadFiles/"); // 服务器保存路径
string fn = null;//本地路径
string Filfn = null;
if (txtmailto.Text != string.Empty || txtmailto.Text !="")
{
if (txtmailtitle.Text != string.Empty || txtmailtitle.Text != "")
{
EmpInfoBusinessRule EmpRule = new EmpInfoBusinessRule();
EmpRule.SessionData = (SessionEntity)Session["SysSessionData"];
EmpRule.GlobalData = (GlobalEntity)Application["SysGlobalData"];
IList <MstEmpInfoEntity> MailData = (List <MstEmpInfoEntity>)EmpRule.MailData();
smtp.DeliveryMethod = SmtpDeliveryMethod.Network;
smtp.Host = "Mail.OnMost.com";
foreach (MstEmpInfoEntity info in MailData)
{
smtp.Credentials = new System.Net.NetworkCredential(info.Mail, info.MailPassword);
mail.From = new MailAddress(info.Mail);
}
mail.To.Add(txtmailto.Text);
mail.Subject = txtmailtitle.Text;
mail.Body = txtmailcontent.Value;
mail.BodyEncoding = System.Text.Encoding.UTF8;
mail.IsBodyHtml = true;
mail.Priority = MailPriority.High;

if (hif.Count > 0)
{
foreach (System.Web.UI.HtmlControls.HtmlInputFile HIF in hif)
{

fn = System.IO.Path.GetFileName(HIF.PostedFile.FileName);
HIF.PostedFile.SaveAs(baseLocation + fn);
mail.Attachments.Add(new Attachment(baseLocation + fn));
Filfn += baseLocation + fn+",";

}
}

try
{

smtp.Send(mail);
this.Response.Write(" <script>alert('邮件发送成功！') </script>");
this.lblErr.Text = "";
mail.Attachments.Dispose();
strFlie = (Filfn).Substring(0, (Filfn).Length - 1).Split(',');
for (int i = 0; i < strFlie.Length; i++)
{
if (strFlie[i] != null && strFlie[i] != "")
{
System.IO.File.Delete(strFlie[i]);
}

}

Pageload();

}
catch (Exception ex)
{
mail.Attachments.Dispose();
strFlie = (Filfn).Substring(0, (Filfn).Length - 1).Split(',');
for (int i = 0; i < strFlie.Length; i++)
{
if (strFlie[i] != null && strFlie[i] != "")
{
System.IO.File.Delete(strFlie[i]);
}

}
this.lblErr.Text = ex.Message;

}
}
else
{
this.lblErr.Text = "主题不能为空！";
}
}
else
{
this.lblErr.Text = "收件人不能为空！";
}
mail.Attachments.Dispose();
strFlie = (Filfn).Substring(0, (Filfn).Length - 1).Split(',');
for (int i = 0; i < strFlie.Length; i++)
{
if (strFlie[i] != null && strFlie[i] != "")
{
System.IO.File.Delete(strFlie[i]);
}

}

}
protected void Quantity(object sender, EventArgs e)
{
this.Response.Redirect("/OnMostOA/E-Mail/Sys_Frm_SentMailPage.aspx");
}

}

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