使用C#代码向多个用户发送电子邮件
早上好,朋友们。。。 我一直在开发一个控制台应用程序,试图向多个用户发送电子邮件。这里我使用一个字符串数组来存储地址。但每次我执行代码时,都会导致错误。需要你的帮助吗使用C#代码向多个用户发送电子邮件,c#,asp.net,email,gmail,C#,Asp.net,Email,Gmail,早上好,朋友们。。。 我一直在开发一个控制台应用程序,试图向多个用户发送电子邮件。这里我使用一个字符串数组来存储地址。但每次我执行代码时,都会导致错误。需要你的帮助吗 using System; using System.IO; using System.Web; using System.Linq; using System.Net.Mail; using System.Net.Mime; namespace Send { class Program { static void
using System;
using System.IO;
using System.Web;
using System.Linq;
using System.Net.Mail;
using System.Net.Mime;
namespace Send
{
class Program
{
static void Main(string[] args)
{
Program objProgram = new Program();
string From = "your_gmail_id";
string[] Recepeint = { "abc@gmail.com;", "efg@gmail.com;", "hij@gmail.com;" };
string To = Convert.ToString(Recepeint);
string Bcc = "klm@gmail.com";
string Cc = "xyz@gmail.com";
string Subject = "Test";
string Body = "Hello... This is a Testing Message";
string strDisplayName = "ABC";
objProgram.fnSendMailMessage(From, To, Bcc, Cc, Subject, Body, strDisplayName);
Console.ReadLine();
}
// To Send Mail To User
private bool fnSendMailMessage(string From, string To, string Bcc, string Cc, string Subject, string Body, string strDisplayName = "")
{
try
{
// Instantiate a new instance of MailMessage
MailMessage mMailMessage = new MailMessage();
// Set the sender address of the mail message
mMailMessage.From = new MailAddress(From, strDisplayName);
foreach (string strRecp in To.Split(','))
{
// Set the recepient address of the mail message
mMailMessage.To.Add(new MailAddress(strRecp));
}
// Check if the bcc value is null or an empty string
if ((!(Bcc == null) && (Bcc != String.Empty)))
{
foreach (string strBcc in Bcc.Split(','))
{
// Set the Bcc address of the mail message
mMailMessage.Bcc.Add(new MailAddress(strBcc));
}
}
// Check if the cc value is null or an empty value
if ((!(Cc == null) && (Cc != String.Empty)))
{
foreach (string strCc in Cc.Split(','))
{
// Set the CC address of the mail message
mMailMessage.CC.Add(new MailAddress(strCc));
}
}
// Set the subject of the mail message
mMailMessage.Subject = Subject;
// Code to send Single attachments
FileStream fs = new FileStream(@"D:\abc-xyz\abc\Links.txt", FileMode.Open, FileAccess.Read);
Attachment a = new Attachment(fs, "Links.txt", MediaTypeNames.Application.Octet);
mMailMessage.Attachments.Add(a);
// Code to send Multiple attachments
mMailMessage.Attachments.Add(new Attachment(@"C:\Users\abc\Desktop\SPS.txt"));
mMailMessage.Attachments.Add(new Attachment(@"D:\abc-xyz\UseFull-Links\How to send an Email using C# – complete features.txt"));
// Secify the format of the body as HTML
mMailMessage.IsBodyHtml = true;
//string path = (System.AppDomain.CurrentDomain + "ClientBin\\Images\\ELearningBanner.jpg");
// To create an embedded image you will need to first create a Html formatted AlternateView.
// Within that alternate view you create an tag, that points to the ContentId (CID) of the LinkedResource.
// You then create a LinkedResource object and add it to the AlternateView's LinkedResources collection.
LinkedResource logo = new LinkedResource(@"C:\Users\abc\Desktop\Send\images.jpg", MediaTypeNames.Image.Jpeg); //It is mainly used for creating embedded images
logo.ContentId = "Logo";
AlternateView altView = AlternateView.CreateAlternateViewFromString(Body, null, MediaTypeNames.Text.Html);
altView.LinkedResources.Add(logo);
mMailMessage.AlternateViews.Add(altView);
// Set the priority of the mail message to normal
mMailMessage.Priority = MailPriority.Normal;
// Instantiate a new instance of SmtpClient
SmtpClient mSmtpClient = new SmtpClient();
mSmtpClient.Host = "smtp.gmail.com";
mSmtpClient.EnableSsl = true;
mSmtpClient.Credentials = new System.Net.NetworkCredential("Your_Id", "Your_Password");
mSmtpClient.Port = 587;
// Send the mail message
mSmtpClient.Send(mMailMessage);
Console.WriteLine("SuccessFully Sent");
return true;
}
catch (Exception ex)
{
Console.WriteLine("Failed to Send"+ex);
return false;
}
}
}
}
实际上,主要错误是我试图将字符串“Recepient”的数组分配给字符串var“to”,所以这是在创建错误。
有谁能告诉我将多个字符串分配给单个字符串变量的最简单方法吗
“指定的字符串不是电子邮件地址所需的格式。”一旦我的控件转到此块执行,我就会在catch块中收到此错误
foreach (string strRecp in To.Split(','))
{
// Set the recepient address of the mail message
mMailMessage.To.Add(new MailAddress(strRecp));
}
为什么不将
的类型更改为到字符串[]
然后执行以下操作:
foreach (var email in To))
{
mailMessage.To.Add(new MailAddress(email));
}
此外,您还需要从地址中删除分号。因此,Main
中的两行将更改为:
static void Main(string[] args)
{
// ...
string[] Recepeint = { "abc@gmail.com", "efg@gmail.com", "hij@gmail.com" };
// ...
objProgram.fnSendMailMessage(From, Recepeint, Bcc, Cc, Subject, Body, strDisplayName);
}
此时代码中断的原因是string To=Convert.ToString(Recepeint)
将是“System.string[]”。这是因为:
ToString方法的默认实现返回完整的
对象类型的限定名称
这将为您提供您想要的结果:
var To = string.Join(",", Recepeint);
@拉杰什:你在这条线上遇到了问题:
string From = "your_gmail_id"; // it should be your@gmail.com
请查收并回复
@拉杰什:更换后,如果您有任何进一步的错误,请张贴在这里
下面是完整的更新代码。请查找我所做的更改的//change
using System;
using System.IO;
using System.Web;
using System.Linq;
using System.Net.Mail;
using System.Net.Mime;
namespace OracleEntityFrameworkProject
{
class SendingEmail
{
static void Main(string[] args)
{
SendingEmail objProgram = new SendingEmail();
string From = "your@gmail_id"; //change
string To = ""; //change
string[] Recepeint = { "abc@gmail.com;", "efg@gmail.com;", "hij@gmail.com;" };
for (int i = 0; i < Recepeint.Length; i++) //change
{//change
To += Recepeint[i];//change
}//change
//string To = Convert.ToString(Recepeint);
string Bcc = "klm@gmail.com";
string Cc = "xyz@gmail.com";
string Subject = "Test";
string Body = "Hello... This is a Testing Message";
string strDisplayName = "ABC";
objProgram.fnSendMailMessage(From, To, Bcc, Cc, Subject, Body, strDisplayName);
Console.ReadLine();
}
// To Send Mail To User
private bool fnSendMailMessage(string From, string To, string Bcc, string Cc, string Subject, string Body, string strDisplayName = "")
{
try
{
// Instantiate a new instance of MailMessage
MailMessage mMailMessage = new MailMessage();
// Set the sender address of the mail message
mMailMessage.From = new MailAddress(From, strDisplayName);
foreach (string strRecp in To.Split(new [] {";"}, StringSplitOptions.RemoveEmptyEntries))//change
{
// Set the recepient address of the mail message
mMailMessage.To.Add(new MailAddress(strRecp));
}
// Check if the bcc value is null or an empty string
if ((!(Bcc == null) && (Bcc != String.Empty)))
{
foreach (string strBcc in Bcc.Split(','))
{
// Set the Bcc address of the mail message
mMailMessage.Bcc.Add(new MailAddress(strBcc));
}
}
// Check if the cc value is null or an empty value
if ((!(Cc == null) && (Cc != String.Empty)))
{
foreach (string strCc in Cc.Split(','))
{
// Set the CC address of the mail message
mMailMessage.CC.Add(new MailAddress(strCc));
}
}
// Set the subject of the mail message
mMailMessage.Subject = Subject;
// Code to send Single attachments
FileStream fs = new FileStream(@"D:\abc-xyz\abc\Links.txt", FileMode.Open, FileAccess.Read);
Attachment a = new Attachment(fs, "Links.txt", MediaTypeNames.Application.Octet);
mMailMessage.Attachments.Add(a);
// Code to send Multiple attachments
mMailMessage.Attachments.Add(new Attachment(@"C:\Users\abc\Desktop\SPS.txt"));
mMailMessage.Attachments.Add(new Attachment(@"D:\abc-xyz\UseFull-Links\How to send an Email using C# – complete features.txt"));
// Secify the format of the body as HTML
mMailMessage.IsBodyHtml = true;
//string path = (System.AppDomain.CurrentDomain + "ClientBin\\Images\\ELearningBanner.jpg");
// To create an embedded image you will need to first create a Html formatted AlternateView.
// Within that alternate view you create an tag, that points to the ContentId (CID) of the LinkedResource.
// You then create a LinkedResource object and add it to the AlternateView's LinkedResources collection.
LinkedResource logo = new LinkedResource(@"C:\Users\abc\Desktop\Send\images.jpg", MediaTypeNames.Image.Jpeg); //It is mainly used for creating embedded images
logo.ContentId = "Logo";
AlternateView altView = AlternateView.CreateAlternateViewFromString(Body, null, MediaTypeNames.Text.Html);
altView.LinkedResources.Add(logo);
mMailMessage.AlternateViews.Add(altView);
// Set the priority of the mail message to normal
mMailMessage.Priority = MailPriority.Normal;
// Instantiate a new instance of SmtpClient
SmtpClient mSmtpClient = new SmtpClient();
mSmtpClient.Host = "smtp.gmail.com";
mSmtpClient.EnableSsl = true;
mSmtpClient.Credentials = new System.Net.NetworkCredential("Your_Id", "Your_Password");
mSmtpClient.Port = 587;
// Send the mail message
mSmtpClient.Send(mMailMessage);
Console.WriteLine("SuccessFully Sent");
return true;
}
catch (Exception ex)
{
Console.WriteLine("Failed to Send" + ex);
return false;
}
}
}
}
使用系统;
使用System.IO;
使用System.Web;
使用System.Linq;
使用System.Net.Mail;
使用System.Net.Mime;
命名空间OracleEntityFrameworkProject
{
类发送电子邮件
{
静态void Main(字符串[]参数)
{
SendingEmail objProgram=新建SendingEmail();
字符串From=”your@gmail_id“;//改变
字符串设置为=”“;//更改
字符串[]Recepeint={”abc@gmail.com;", "efg@gmail.com;", "hij@gmail.com;" };
for(int i=0;i