如何每3天自动触发邮件，最多触发3次
本文关键字：3次 何每 3天 | 更新日期: 2023-09-27 18:28:24
我正在开发休假管理系统，这是我公司的内部项目。为此，我在休假管理表单中放置了休假开始日期、截止日期、报告经理提交按钮等字段，用户输入这些字段并单击提交按钮，邮件（收件人：报告经理，抄送：人力资源）从用户（申请休假的人）帐户转到报告经理，直到该工作罚款。
现在我有了新的要求，用户输入休假管理字段并提交（用户申请休假），这个休假请求将提交给他的报告经理。报告管理员未批准用户休假请求最多3天，该时间邮件将自动触发，每3天一次，最多3次来自用户邮件帐户。
例如，今天（2013年8月21日）我申请了休假，在申请时间时，休假请求从我的邮件账户发送给了我的报告经理。我的报告经理在3天内没有批准我的休假申请，这意味着2013年8月24日，这个日期的邮件应该从我的账户自动发送到报告经理账户，他也没有批准2013年08月24日的日期，再次在2013年08年08月27日从我的帐户自动触发到报告经理帐户的邮件，如果他在2013年07月27日也没有批准，则在2013年09月30日触发邮件，即使在2013年8月28日，我的人力资源邮件账户也没有自动触发批准邮件（申请休假时间抄送给人力资源）。
在休假管理表单中提交按钮中的代码下方：
protected void BtnApplyLeave_Click(object sender, EventArgs e)
{
if (ddlleavetype.SelectedIndex == 0)
{
lblerrmsg.Text = "Please select Leavetype";
lblerrmsg.Visible = true;
}
else if (txtmbno.Text == "")
{
lblerrmsg.Text = "Please Enter MobileNO";
lblerrmsg.Visible = true;
}
else if (txtfromdate.Text == "")
{
lblerrmsg.Text = "please Select From date";
lblerrmsg.Visible = true;
}
else if (txttodate.Text == "")
{
lblerrmsg.Text = "please Select todate";
lblerrmsg.Visible = true;
}
else if (txtReasonleave.Text == "")
{
lblerrmsg.Text = "Please Enter Reason for Leave";
lblerrmsg.Visible = true;
}
else
{
string username = Session["logUser"].ToString();
if (ddlleavetype.SelectedValue == "Earned Leave")
{
try
{
OleDbCommand com = new OleDbCommand("update IND_EMP_LEAVES set leavefromdate = to_date('" + txtfromdate.Text + "','dd/MM/yyyy'), leavetodate = to_date('" + txttodate.Text + "','dd/MM/yyyy'), MBNO = '" + txtmbno.Text + "', NOOFDAYSAPPL = '" + txtleavedays.Text + "', LEAVETYPE = '" + ddlleavetype.SelectedValue + "', REASONFORLEAVE = '" + txtReasonleave.Text + "', STATUS = '" + "null" + "' where Username ='" + username + "'", DbConnection);
DbConnection.Open();
com.ExecuteNonQuery();
DbConnection.Close();
}
catch (Exception ex)
{
ex.ToString();
}
}
else if (ddlleavetype.SelectedValue == "Sick Leave")
{
try
{
OleDbCommand com = new OleDbCommand("update IND_EMP_LEAVES set leavefromdate = to_date('" + txtfromdate.Text + "','dd/MM/yyyy'), leavetodate = to_date('" + txttodate.Text + "','dd/MM/yyyy'), MBNO = '" + txtmbno.Text + "', NOOFDAYSAPPL = '" + txtleavedays.Text + "', LEAVETYPE = '" + ddlleavetype.SelectedValue + "', REASONFORLEAVE = '" + txtReasonleave.Text + "', STATUS = '" + "null" + "' where Username ='" + username + "'", DbConnection);
DbConnection.Open();
com.ExecuteNonQuery();
DbConnection.Close();
}
catch(Exception ex)
{
ex.ToString();
}
}
else if (ddlleavetype.SelectedValue == "LOP")
{
try
{
OleDbCommand com = new OleDbCommand("update IND_EMP_LEAVES set leavefromdate = to_date('" + txtfromdate.Text + "','dd/MM/yyyy'), leavetodate = to_date('" + txttodate.Text + "','dd/MM/yyyy'), MBNO = '" + txtmbno.Text + "', NOOFDAYSAPPL = '" + txtleavedays.Text + "', LEAVETYPE = '" + ddlleavetype.SelectedValue + "', REASONFORLEAVE = '" + txtReasonleave.Text + "', STATUS = '" + "null" + "' where Username ='" + username + "'", DbConnection);
DbConnection.Open();
com.ExecuteNonQuery();
DbConnection.Close();
}
catch (Exception ex)
{
ex.ToString();
}
}
try
{
string subject = "Reg: Leave Request";
string datefrom = txtfromdate.Text;
string dateto = txttodate.Text;
string msg = txtReasonleave.Text;
DbConnection.Open();
OleDbCommand cmd = new OleDbCommand("select EMP_NAME, REPT_MGR, hr from EMP_HIERARCHY where username ='" + username + "'", DbConnection);
OleDbDataReader dr = cmd.ExecuteReader();
while (dr.Read())
{
string ename = dr[0].ToString();
string rep_mgr = dr[1].ToString();
string hr_mgr = dr[2].ToString();
Session["emp"] = ename;
Session["mgr"] = rep_mgr;
Session["hr"] = hr_mgr;
}
dr.Close();
string emp = Session["emp"].ToString();
OleDbCommand cmd7 = new OleDbCommand("select M.OFFICIAL_EMAIL, L.pwd from EMP_MASTER M, emplogin L where L.username = '" + username + "' and M.username = L.username", DbConnection);
OleDbDataReader dr1 = cmd7.ExecuteReader();
while (dr1.Read())
{
string frommail = dr1[0].ToString();
string frompwd = dr1[1].ToString();
Session["from"] = frommail;
Session["pwd"] = frompwd;
}
dr1.Close();
string mgr = Session["mgr"].ToString();
string hr = Session["hr"].ToString();
OleDbCommand cmd2 = new OleDbCommand("select OFFICIAL_EMAIL from emp_master where emp_name = '" + mgr + "'", DbConnection);
OleDbDataReader dr2 = cmd2.ExecuteReader();
while (dr2.Read())
{
string rep_to = dr2[0].ToString();
Session["to"] = rep_to.ToString();
}
dr2.Close();
OleDbCommand cmd3 = new OleDbCommand("select OFFICIAL_EMAIL from emp_master where emp_name = '" + hr + "'", DbConnection);
OleDbDataReader dr3 = cmd3.ExecuteReader();
while (dr3.Read())
{
string hr_to = dr3[0].ToString();
Session["Cc"] = hr_to.ToString();
}
dr3.Close();
string body = string.Concat("I would like to apply '" + ddlleavetype.SelectedValue + "' from ", datefrom, " to ", dateto, System.Environment.NewLine, "Reason: ", msg);
string from = Session["from"].ToString();
string pwd = Session["pwd"].ToString();
string to = Session["to"].ToString();
string Cc = Session["Cc"].ToString();
var smtp = new System.Net.Mail.SmtpClient();
{
smtp.Host = "smtp.gmail.com";
smtp.Port = 587;
smtp.EnableSsl = true;
smtp.DeliveryMethod = System.Net.Mail.SmtpDeliveryMethod.Network;
smtp.Credentials = new NetworkCredential(from, pwd);
smtp.Timeout = 20000;
}
//smtp.Send(from, to, subject, body);
// Instantiate a new instance of MailMessage
MailMessage mMailMessage = new MailMessage();
// Set the sender address of the mail message
mMailMessage.From = new MailAddress(from);
// Set the recepient address of the mail message
mMailMessage.To.Add(new MailAddress(to));
// Check if the bcc value is null or an empty string
//if ((bcc != null) && (bcc != string.Empty))
//{
// // Set the Bcc address of the mail message
// mMailMessage.Bcc.Add(new MailAddress(bcc));
//}
// Check if the cc value is null or an empty value
if ((Cc != null) && (Cc != string.Empty))
{
// Set the CC address of the mail message
mMailMessage.CC.Add(new MailAddress(Cc));
}
// Set the subject of the mail message
mMailMessage.Subject = subject;
// Set the body of the mail message
mMailMessage.Body = body;
// Set the format of the mail message body as HTML
mMailMessage.IsBodyHtml = true;
// Set the priority of the mail message to normal
mMailMessage.Priority = MailPriority.Normal;
// Instantiate a new instance of SmtpClient
//SmtpClient smtp = new SmtpClient();
// Send the mail message
smtp.Send(mMailMessage);
ScriptManager.RegisterStartupScript(this, GetType(), "success", "alert('Leave Request sent Successfully');", true);
// Session.Clear();
}
catch (Exception ex)
{
ex.ToString();
}
}
}
Quartz.NET允许定期安排作业。你可以用它来安排电子邮件。这个博客提供了一个如何在应用程序中使用Quartz的好例子。
这里有另一个你可能会觉得有用的线程：如何设置Quartz.NET来调度电子邮件
您需要为创建一个service来实现这一点。
请看下面的文章-
创建一个服务，使用c#.net 在asp.net中自动发送邮件
在本文中，创建了一个服务，该服务将在结算时间执行，并发送邮件。