如何按照每个帐户的最大中继策略发送邮件
我刚刚开发了一个BulkMail Web应用程序。我有一个名称为mail1.aspx的Web表单。现在，我只想发送具有最大中继量的邮件，这些邮件是在用户创建每个中继时提供的。我有数据库字段名称MaxCount，它限制了从每个用户发送邮件。现在，我只想检查以前的SentDateTime列，其中当前的DateTime与 Count <= MaxCount 字段一起发生。这是先前订阅者计数的计数器。这里包括我的linqtosql表详细信息。
这是我的发送按钮代码：
protected void btn_save_Click(object sender, EventArgs e)
{
List<string> file_names = new List<string>();
string ToUser = txt_ComName3.Text.Trim();
char touser1 = Convert.ToChar(ToUser.Substring(ToUser.Length - 1, 1));
string Cc = null;
if (!string.IsNullOrEmpty(txt_ComName4.Text.Trim()))
{
Cc = txt_ComName4.Text.Trim();
}
string Bcc = null;
if (!string.IsNullOrEmpty(txt_ComName5.Text.Trim()))
{
Bcc = txt_ComName5.Text.Trim();
}
char? cc1 = null;
if (!string.IsNullOrEmpty(Cc))
{
cc1 = Convert.ToChar(Cc.Substring(Cc.Length - 1, 1));
}
char? bcc1 = null;
if (!string.IsNullOrEmpty(Bcc))
{
bcc1 = Convert.ToChar(Bcc.Substring(Bcc.Length - 1, 1));
}
bool FileAttached;
if (FileUpload1.HasFile)
{
FileAttached = true;
}
else
{
FileAttached = false;
}
int templateId = 0;
if (!string.IsNullOrEmpty(template_id.Value.Trim()))
{
templateId = Convert.ToInt32(template_id.Value.ToString());
}
else
{
templateId = 0;
}
using (DataClassesDataContext db = new DataClassesDataContext())
{
string Email = db.FromUsers.Where(f => f.EmailAddress.Equals(txt_ComName2.Text.Trim()) && f.user_id.Equals(int.Parse(CommonLogic.GetSessionValue("user_id").ToString()))).Select(f => f.EmailAddress).FirstOrDefault();
string Host = db.FromUsers.Where(f => f.EmailAddress.Equals(txt_ComName2.Text.Trim()) && f.user_id.Equals(int.Parse(CommonLogic.GetSessionValue("user_id").ToString()))).Select(f => f.Host).FirstOrDefault();
string Port = db.FromUsers.Where(f => f.EmailAddress.Equals(txt_ComName2.Text.Trim()) && f.user_id.Equals(int.Parse(CommonLogic.GetSessionValue("user_id").ToString()))).Select(f => f.Port).FirstOrDefault().ToString();
string Password = db.FromUsers.Where(f => f.EmailAddress.Equals(txt_ComName2.Text.Trim()) && f.user_id.Equals(int.Parse(CommonLogic.GetSessionValue("user_id").ToString()))).Select(f => f.Password).FirstOrDefault();
bool EnableSSl = db.FromUsers.Where(f => f.EmailAddress.Equals(txt_ComName2.Text.Trim()) && f.user_id.Equals(int.Parse(CommonLogic.GetSessionValue("user_id").ToString()))).Select(f => f.EnableSSL).FirstOrDefault();
if ((String)Session["new_flag"] == "True")
{
var searchfromuser = db.FromUsers.Where(f => f.EmailAddress.Equals(txt_ComName2.Text.Trim()) && f.user_id.Equals(int.Parse(CommonLogic.GetSessionValue("user_id").ToString()))).Select(f => f).FirstOrDefault();
if (searchfromuser != null)
{
int fromuserid = int.Parse(searchfromuser.Id.ToString());
Email myEmail = new Email();
myEmail.Title = txt_ComName1.Text.Trim();
myEmail.IsDraft = false;
myEmail.FromUser = fromuserid;
myEmail.ToUser = (touser1 == ',') ? ToUser.TrimEnd(',') : ToUser;
if (!string.IsNullOrEmpty(Cc))
{
myEmail.Cc = (cc1 == ',') ? Cc.TrimEnd(',') : Cc;
}
if (!string.IsNullOrEmpty(Bcc))
{
myEmail.Bcc = (bcc1 == ',') ? Bcc.TrimEnd(',') : Bcc;
}
myEmail.Body = CKEditor1.Text.Trim();
myEmail.IsFileAttached = FileAttached;
myEmail.SentDateTime = DateTime.Now;
myEmail.user_id = int.Parse(CommonLogic.GetSessionValue("user_id").ToString());
db.Emails.InsertOnSubmit(myEmail);
db.SubmitChanges();
int newId = int.Parse(myEmail.Id.ToString());
HttpFileCollection fileCollection = Request.Files;
double tot_file_size = 0;
for (int i = 0; i < fileCollection.Count; i++)
{
File myFile = new File();
HttpPostedFile uploadfile = fileCollection[i];
string fileTitle = Path.GetFileName(uploadfile.FileName);
string fileName = DateTime.Now.ToString("ddMMyyyy_HHmmss");
string fileType = System.IO.Path.GetExtension(fileTitle).ToString().ToLower();
myFile.Email_Id = newId;
myFile.File_Title = fileTitle;
myFile.File_name = fileName;
myFile.File_ext = fileType;
double file_size = int.Parse(uploadfile.ContentLength.ToString()) / 1024;
tot_file_size += file_size;
myFile.File_Size = file_size;
if (uploadfile.ContentLength > 0)
{
uploadfile.SaveAs(Server.MapPath("~/EmailFiles/") + fileName + fileType);
db.Files.InsertOnSubmit(myFile);
db.SubmitChanges();
file_names.Add(fileName + fileType);
}
}
db.UpdateEmailField(newId, "TotalFileSize", tot_file_size.ToString());
string sbody = ConvertAllString(CKEditor1.Text.Trim());
DAL_General.SendReplyMail(newId, txt_ComName1.Text.Trim(), Host, Port, EnableSSl, Email, Password, (touser1 == ',') ? ToUser.TrimEnd(',') : ToUser, (cc1 == ',') ? Cc.TrimEnd(',') : Cc, (bcc1 == ',') ? Bcc.TrimEnd(',') : Bcc, sbody, file_names.ToList(), int.Parse(CommonLogic.GetSessionValue("user_id").ToString()), templateId);
int Subcount = 0;
string toUser = (touser1 == ',') ? ToUser.TrimEnd(',') : ToUser;
if (toUser.Contains(","))
{
string[] values = ToUser.Split(new char[] { ',', ' ' }, StringSplitOptions.RemoveEmptyEntries);
for (int s = 0; s < values.Length; s++)
{
Subcount++;
}
}
else
{
Subcount = 1;
}
string Ccs = (cc1 == ',') ? Cc.TrimEnd(',') : Cc;
if (!string.IsNullOrEmpty(txt_ComName4.Text.Trim()))
{
string[] values1 = Ccs.Split(new char[] { ',', ' ' }, StringSplitOptions.RemoveEmptyEntries);
for (int c = 0; c < values1.Length; c++)
{
Subcount++;
}
}
string Bccs = (bcc1 == ',') ? Bcc.TrimEnd(',') : Bcc;
if (!string.IsNullOrEmpty(txt_ComName5.Text.Trim()))
{
string[] values2 = Bccs.Split(new char[] { ',', ' ' }, StringSplitOptions.RemoveEmptyEntries);
for (int b = 0; b < values2.Length; b++)
{
Subcount++;
}
}
db.ExecuteCommand(@"UPDATE [dbo].[tbl_From_master] SET [SentDateTime] = GETDATE() WHERE [Id]='" + fromuserid + "'");
db.ExecuteCommand(@"UPDATE [dbo].[tbl_From_master] SET [Count] = '" + Subcount + "' WHERE [Id]='" + fromuserid + "'");
var loggedMessage = db.LoggedMessages.Where(l => l.email_id.Equals(newId)).Select(l => l).ToList();
foreach (var message in loggedMessage)
{
if (message.Sent == true)
{
ShowAlert("Mail Sent Successfully.", this);
}
else if (message.Sent == false)
{
ShowAlert(message.SmtpException.ToString() + " " + message.InnerExceptionDetails.ToString(), this);
}
}
}
else
{
ShowAlert("From User doesn't exist in record.", this);
}
CommonLogic.SetSessionValue("flag","");
CommonLogic.SetSessionValue("commandName", "Outbox");
Response.Redirect("mail1.aspx");
}
else if ((String)Session["new_flag"] == "False")
{
var searchfromuser = db.FromUsers.Where(f => f.EmailAddress.Equals(txt_ComName2.Text.Trim()) && f.user_id.Equals(int.Parse(CommonLogic.GetSessionValue("user_id").ToString()))).Select(f => f).FirstOrDefault();
//here I just want to check mail subscribers from Touser,Cc,Bcc count less or equals current Count field and time between SentDatetime and CurrentDatetime less or equals one hour
if (searchfromuser != null)
{
int fromuserid = int.Parse(searchfromuser.Id.ToString());
db.UpdateEmail(int.Parse(email_id.Value.ToString()), txt_ComName1.Text.Trim(), fromuserid, (touser1 == ',') ? ToUser.TrimEnd(',') : ToUser, (cc1 == ',') ? Cc.TrimEnd(',') : Cc, (bcc1 == ',') ? Bcc.TrimEnd(',') : Bcc, CKEditor1.Text.Trim(), FileAttached, DateTime.Parse(System.DateTime.Now.ToString()));
db.SubmitChanges();
HttpFileCollection fileCollection = Request.Files;
double tot_file_size = 0;
for (int i = 0; i < fileCollection.Count; i++)
{
File myFile = new File();
HttpPostedFile uploadfile = fileCollection[i];
string fileTitle = Path.GetFileName(uploadfile.FileName);
string fileName = DateTime.Now.ToString("ddMMyyyy_HHmmss");
string fileType = System.IO.Path.GetExtension(fileTitle).ToString().ToLower();
myFile.Email_Id = int.Parse(email_id.Value.ToString());
myFile.File_Title = fileTitle;
myFile.File_name = fileName;
myFile.File_ext = fileType;
double file_size = int.Parse(uploadfile.ContentLength.ToString()) / 1024;
tot_file_size += file_size;
myFile.File_Size = file_size;
if (uploadfile.ContentLength > 0)
{
uploadfile.SaveAs(Server.MapPath("~/EmailFiles/") + fileName + fileType);
db.Files.InsertOnSubmit(myFile);
db.SubmitChanges();
file_names.Add(fileName + fileType);
}
}
var fileNames = db.Files.Where(f => f.Email_Id.Equals(int.Parse(email_id.Value.ToString()))).Select(f => f).ToList();
if (fileNames.Count > 0)
{
foreach (var item in fileNames)
{
file_names.Add(item.File_name.ToString() + item.File_ext.ToString());
}
}
db.UpdateEmailField(int.Parse(email_id.Value.ToString()), "TotalFileSize", tot_file_size.ToString());
string sbody = ConvertAllString(CKEditor1.Text.Trim());
DAL_General.SendReplyMail(int.Parse(email_id.Value.ToString()), txt_ComName1.Text.Trim(), Host, Port, EnableSSl, Email, Password, (touser1 == ',') ? ToUser.TrimEnd(',') : ToUser, (cc1 == ',') ? Cc.TrimEnd(',') : Cc, (bcc1 == ',') ? Bcc.TrimEnd(',') : Bcc, sbody, file_names.ToList(), int.Parse(CommonLogic.GetSessionValue("user_id").ToString()), templateId);
int Subcount = 0;
string toUser = (touser1 == ',') ? ToUser.TrimEnd(',') : ToUser;
if (toUser.Contains(","))
{
string[] values = ToUser.Split(new char[] { ',', ' ' }, StringSplitOptions.RemoveEmptyEntries);
for (int s = 0; s < values.Length; s++)
{
Subcount++;
}
}
else
{
Subcount = 1;
}
string Ccs = (cc1 == ',') ? Cc.TrimEnd(',') : Cc;
if (!string.IsNullOrEmpty(txt_ComName4.Text.Trim()))
{
string[] values1 = Ccs.Split(new char[] { ',', ' ' }, StringSplitOptions.RemoveEmptyEntries);
for (int c = 0; c < values1.Length; c++)
{
Subcount++;
}
}
string Bccs = (bcc1 == ',') ? Bcc.TrimEnd(',') : Bcc;
if (!string.IsNullOrEmpty(txt_ComName5.Text.Trim()))
{
string[] values2 = Bccs.Split(new char[] { ',', ' ' }, StringSplitOptions.RemoveEmptyEntries);
for (int b = 0; b < values2.Length; b++)
{
Subcount++;
}
}
db.ExecuteCommand(@"UPDATE [dbo].[tbl_From_master] SET [SentDateTime] = '" + DateTime.Now.Date.ToString() + "' WHERE [Id]='" + fromuserid + "'");
db.ExecuteCommand(@"UPDATE [dbo].[tbl_From_master] SET [Count] = '" + Subcount.ToString() + "' WHERE [Id]='" + fromuserid + "'");
var loggedMessage = db.LoggedMessages.Where(l => l.email_id.Equals(int.Parse(email_id.Value.ToString()))).Select(l => l).ToList();
foreach (var message in loggedMessage)
{
if (message.Sent == true)
{
ShowAlert("Mail Sent Successfully.", this);
}
else if (message.Sent == false)
{
ShowAlert(message.SmtpException.ToString() + " " + message.InnerExceptionDetails.ToString(), this);
}
}
}
}
CommonLogic.SetSessionValue("flag", "");
CommonLogic.SetSessionValue("commandName", "Outbox");
Response.Redirect("mail1.aspx");
}
}
我只是谷歌搜索，找到了一些解决方案VB.Net具有功能DateDiff，如何使用c＃.net来实现？
-------------------------------------更新------ ----------------------------
using (DataClassesDataContext db = new DataClassesDataContext())
{
DateTime? LastSentEmailDate = db.FromUsers.Where(f => f.EmailAddress.Equals(txt_ComName2.Text.Trim()) && f.user_id.Equals(int.Parse(CommonLogic.GetSessionValue("user_id").ToString()))).Select(f => f.SentDateTime).FirstOrDefault();
if (LastSentEmailDate != null)
{
DateTime CurrentDate = DateTime.Now;
int diffTimes = Convert.ToInt32((TimeSpan)(CurrentDate - LastSentEmailDate)); //difference as time you can use as miliseconds interval.TotalMilliSeconds //this lines gives error
if (diffTimes <= 3600000)
{
string fromName = db.FromUsers.Where(f => f.EmailAddress.Equals(txt_ComName2.Text.Trim()) && f.user_id.Equals(int.Parse(CommonLogic.GetSessionValue("user_id").ToString()))).Select(f => f.Name).FirstOrDefault();
string Email = db.FromUsers.Where(f => f.EmailAddress.Equals(txt_ComName2.Text.Trim()) && f.user_id.Equals(int.Parse(CommonLogic.GetSessionValue("user_id").ToString()))).Select(f => f.EmailAddress).FirstOrDefault();
string Host = db.FromUsers.Where(f => f.EmailAddress.Equals(txt_ComName2.Text.Trim()) && f.user_id.Equals(int.Parse(CommonLogic.GetSessionValue("user_id").ToString()))).Select(f => f.Host).FirstOrDefault();
string Port = db.FromUsers.Where(f => f.EmailAddress.Equals(txt_ComName2.Text.Trim()) && f.user_id.Equals(int.Parse(CommonLogic.GetSessionValue("user_id").ToString()))).Select(f => f.Port).FirstOrDefault().ToString();
string Password = db.FromUsers.Where(f => f.EmailAddress.Equals(txt_ComName2.Text.Trim()) && f.user_id.Equals(int.Parse(CommonLogic.GetSessionValue("user_id").ToString()))).Select(f => f.Password).FirstOrDefault();
bool EnableSSl = db.FromUsers.Where(f => f.EmailAddress.Equals(txt_ComName2.Text.Trim()) && f.user_id.Equals(int.Parse(CommonLogic.GetSessionValue("user_id").ToString()))).Select(f => f.EnableSSL).FirstOrDefault();
if ((String)Session["new_flag"] == "True")
{
1 个答案:
答案 0 :(得分：1)
在C＃中，您可以将TimeSpan用于所有这些类型的操作，而实际上这仅够用
用法示例：
DateTime d1 = new DateTime(2019,4,7,13,59,0); //13 days ago
DateTime d2 = DateTime.Now;
int diffDays = ((TimeSpan) (date2 - date1)).Days; //difference as day
int diffTimes = ((TimeSpan) (date2 - date1)); //difference as time you can use as miliseconds interval.TotalMilliSeconds
您也可以参考C＃环境使用 Microsoft.VisualBasic.dll
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