C＃与Vb.net sendemail [英] C# vs. Vb.net sendemail

问题描述

我有以下用于在多个应用程序中发送电子邮件的C＃代码

I have the following C# code for sending an email in several applications

private void MailSend()
{
    DateTime Now = System.DateTime.Now;
    MailMessage message = new MailMessage();
    SmtpClient smtp = new SmtpClient("corimc04");
    smtp.Timeout = 5000;
    string recipient = recipientCB.SelectedItem.ToString();
    try
    {
        var _with1 = message;
        _with1.From = new MailAddress("[e-mail]");
        _with1.To.Add(new MailAddress(email));        
        _with1.Body = "You have a package in receiving ready for pickup from " + supplier + ".\nOn Shelf: " + shelf + ".\nTracking Number: " + trackingNum;
        _with1.Subject = "MRO Automated Email for " + recipient;
        smtp.Send(message);
        message = null;
    }
    catch (Exception ex)
    {
        MessageBox.Show("Error Sending emails. " + ex.Message);
    }
    smtp = null;
    return;
}

我还有以下用于在其他应用程序中发送电子邮件的VB代码。

I also have the following VB code for sending an email in other applications.

Sub SendEmail()
    Dim smtp As New SmtpClient("corimc04")
    smtp.UseDefaultCredentials = True
    smtp.Timeout = 5000
    
    Try
        
        Dim message As New MailMessage()
        Dim _with1 = message
        _with1.From = New MailAddress("[e-mail]")
        _with1.To.Add(New MailAddress("email"))
        _with1.Body = "Rework Status for Rework WIP" & vbLf & data
        _with1.Subject = "Rework Report Updates"
        smtp.Send(message)
        message.Dispose()
    Catch ex As Exception
        Console.WriteLine("Error Sending emails. " & ex.Message)
    End Try

    smtp = Nothing
End Sub

今天我的C＃代码由于某种原因停止工作，我的C＃应用​​程序都没有发送邮件，但我的VB应用程序仍然发送邮件。我有很多项目使用这个C＃代码，不想转换它们。有没有人有任何想法为什么会突然停止？



我尝试过：



我尝试编写一个VB DLL来引用我的C＃项目，但无法使其工作。

Today my C# code just stopped working for some reason and none of my C# applications will send mail, but my VB applications still send mail. I have many projects that use this C# code and do not want to have to convert them. Does anyone have any ideas why this would just stop all of a sudden?

What I have tried:

I tried writing a VB DLL to reference in my C# project, but could not get this to work.

推荐答案

不工作？什么不起作用的意思？我对此代码如何工作印象深刻。您甚至不提供电子邮件的凭据以便实际发送它...无论如何......您应该尝试在您的C＃代码中输入smtp.UseDefaultCredentials = true ..这是VB.NET代码所做的事情。但是C＃代码没有。

Doesn't work ? What "Doesn't work" means ? I am impressed how this code worked. You don't even provide the credentials for your email in order to actually send it... Anyway... you should try to input smtp.UseDefaultCredentials = true at your C# code.. which is something VB.NET code does... but C# code don't.

我收到System.dll错误发送电子邮件中发生的'System.Net.Mail.SmtpException'类型的第一次机会异常。操作已超时。线程'< No Name>'（0x2658）已退出，代码为0（0x0）"

此代码已运行超过一年，但现在正在给出这个例外。



这不是代码的问题。它似乎与SMTP的.NET控件有关。当我在服务器端使用C＃应用程序时，应用程序按预期发送电子邮件，但是当我从客户端使用此代码时，似乎这是一个连接问题，尽管我得到的错误是超时错误。



这个线程无法解决。

I receive "A first chance exception of type 'System.Net.Mail.SmtpException' occurred in System.dll Error Sending emails. The operation has timed out.The thread '<No Name>' (0x2658) has exited with code 0 (0x0)"
This code has been working for over a year, but is now giving this exception.

It is not an issue with the code. It seems like it has to do with the .NET controls for SMTP. When I use the C# applications on the server side, the application sends the email as expected, yet when I use this code from the client side, it seems like it's a connection issue, although the error I get is a timeout error.

This will not be solved on this thread.

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