public ExchangeService CreateConnection(string url)
{
ServicePointManager.ServerCertificateValidationCallback = (object obj, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors) => true;
ExchangeService service = new ExchangeService();
service.Url = new Uri(url);
service.UseDefaultCredentials = true; // Uses users windows login credentials
return service;
}
public void SendEmail(string sEmailTo, string slocation, DateTime dtdate, string slogyard, string sScaling, string sLogMfct, string sOther, string sScaler, int icheckbox)
{
string scheckbox;
string sDomain = Globals.gDefaultEmailSuffix;
string sUserName = SystemInformation.UserName;
ExchangeService service = CreateConnection("https://myexchangeserver.com/EWS/Exchange.asmx");
string sHTMLpre = $"{EmailBody(Globals.gHTML)}";
EmailMessage mailMessage = new EmailMessage(service); // Use with exchange service
ReplaceWithBR(slogyard);
ReplaceWithBR(sScaling);
ReplaceWithBR(sLogMfct);
ReplaceWithBR(sOther);
if (icheckbox > 0)
scheckbox = "Yes";
else
scheckbox = "No";
sHTMLpre = sHTMLpre.Replace("[@Location]", slocation);
sHTMLpre = sHTMLpre.Replace("[@Date]", dtdate.ToString());
sHTMLpre = sHTMLpre.Replace("[@LogYard]", slogyard);
sHTMLpre = sHTMLpre.Replace("[@Scaling]", sScaling);
sHTMLpre = sHTMLpre.Replace("[@LogManufacturing]", sLogMfct);
sHTMLpre = sHTMLpre.Replace("[@Scaler]", sScaler);
sHTMLpre = sHTMLpre.Replace("[@Other]", sOther);
sHTMLpre = sHTMLpre.Replace("[@RemotesExist]", scheckbox);
mailMessage.ToRecipients.Add(new EmailAddress($"{sEmailTo}@{sDomain}")); // Use with Exchange service
mailMessage.From = new EmailAddress($"{sUserName}@{sDomain}"); // Use with Exchange service
mailMessage.Subject = $"Scaling Yard Report for {slocation} on {dtdate}"; // Use with Exchange
mailMessage.Body = sHTMLpre; // Use with Exchange
try
{
mailMessage.SendAndSaveCopy()); //Use with Exchange Service
if (Globals.bLastEmail == true)
{
MessageBox.Show("Email Sent Successfully!");
Globals.MonthlyLog("Email Sent", $"Recipients:{Globals.gEmailList}");
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
Globals.MonthlyLog("Email Fail", $"{ex.Message}");
return;
}
}
這是運行良好的 VB.Net 代碼：
Public Function CreateConnection(ByVal url As String) As ExchangeService
ServicePointManager.ServerCertificateValidationCallback = Function(ByVal obj As Object, ByVal certificate As X509Certificate, ByVal chain As X509Chain, ByVal errors As SslPolicyErrors) True
Dim service As New ExchangeService()
service.Url = New Uri(url)
service.UseDefaultCredentials = True ' Uses users windows login credentials
Return service
End Function
Public Sub SendEmail(sEmailTo As String, slocation As String, dtdate As String, slogyard As String, sScaling As String, sLogMfct As String, sOther As String, sScaler As String, scheckbox As String)
Dim sDomain As String = gDefaultEmailSuffix
Dim sUserName As String = SystemInformation.UserName
Dim service As ExchangeService = CreateConnection("https://myexchangeserver.com/EWS/Exchange.asmx")
Dim sHTMLpre As String = $"{EmailBody(gHTML)}"
Dim mailMessage = New EmailMessage(service) ' Use with exchange service
'Dim mailMessage As New MailMessage() ' Use with SMTP client service
slogyard = slogyard.Replace(ControlChars.Lf, "<br>")
sScaling = sScaling.Replace(ControlChars.Lf, "<br>")
sLogMfct = sLogMfct.Replace(ControlChars.Lf, "<br>")
sOther = sOther.Replace(ControlChars.Lf, "<br>")
If scheckbox = True Then
scheckbox = "Yes"
Else
scheckbox = "No"
End If
sHTMLpre = sHTMLpre.Replace("[@Location]", slocation)
sHTMLpre = sHTMLpre.Replace("[@Date]", dtdate)
sHTMLpre = sHTMLpre.Replace("[@LogYard]", slogyard)
sHTMLpre = sHTMLpre.Replace("[@Scaling]", sScaling)
sHTMLpre = sHTMLpre.Replace("[@LogManufacturing]", sLogMfct)
sHTMLpre = sHTMLpre.Replace("[@Scaler]", sScaler)
sHTMLpre = sHTMLpre.Replace("[@Other]", sOther)
sHTMLpre = sHTMLpre.Replace("[@RemotesExist]", scheckbox)
mailMessage.ToRecipients.Add(New EmailAddress($"{sEmailTo}@{sDomain}")) ' Use with Exchange service
mailMessage.From = New EmailAddress($"{sUserName}@{sDomain}") ' Use with Exchange service
mailMessage.Subject = $"Scaling Yard Report for {slocation} on {dtdate}" ' Use with Exchange
mailMessage.Body = sHTMLpre ' Use with Exchange
'mailMessage.IsBodyHtml = True ' Use with SMTP CLient
'mailMessage.To.Add($"{sEmailTo}@{sDomain}") ' Use with SMTP CLient
'mailMessage.From = New MailAddress($"{sUserName}@{sDomain}") ' Use with SMTP
'mailMessage.Subject = $"Scaling Yard Report for {slocation} on {dtdate}" ' Use with SMTP
'mailMessage.Body = sHTMLpre ' Use with SMTP
'Dim SmtpCli As New SmtpClient() ' Leaving this just in case the EWS breaks
'With SmtpCli ' SMTP Client Code
' .UseDefaultCredentials = False
' .Port = 25
' .DeliveryMethod = SmtpDeliveryMethod.Network
' .Host = gSMTPServer
' .Credentials = New NetworkCredential(gSMTPUsername, gSMTPPassword)
'End With
Try
'SmtpCli.Send(mailMessage) ' Use with SMPT client
mailMessage.SendAndSaveCopy() ' Use with Exchange Service
If bLastEmail = True Then
MsgBox("Email Sent Successfully!")
Call MonthlyLog("Email Sent", $"Recipients:{gEmailList}")
End If
Catch ex As Exception
MessageBox.Show(ex.Message)
Call MonthlyLog("Email Fail", $"{ex.Message}")
Exit Sub
End Try
End Sub
它在以下行失敗：mailMessage.SendAndSaveCopy() -in C# but not VB.Net
收到錯誤：“請求失敗。底層連接已關閉：發送時發生意外錯誤”
正如我所說，它適用于 vb.net 代碼，因此它不是像節流那樣的交換服務器設定。有任何想法嗎？
uj5u.com熱心網友回復：
需要將目標 .Net Framework 更新到至少 4.6 或更高版本。我正在使用 4.5。應該知道，因為我遇到了 vb.net 程式無法在沒有 4.6 的較舊的非更新 32 位 Windows 10 PC 上發送電子郵件的問題。
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