我想要的只是发送一封带有嵌入图像的电子邮件。我正在努力解决它，我不知道为什么我无法得到它。系统发送该电子邮件但不显示图像，这是结果的快照：
您能帮我修改下面显示的代码以处理发送该图像吗？让我们假设我们有任何图像。
C#代码：
protected void Page_Load(object sender, EventArgs e)
{
Send();
}
protected void SendEmail(string toAddresses, string fromAddress, string MailSubject, string MessageBody, bool isBodyHtml, AlternateView av)
{
SmtpClient sc = new SmtpClient("MailAddress");
try
{
MailMessage msg = new MailMessage();
msg.From = new MailAddress("test@mailAddress.com", "Test Sys");
//QuizLink is appSetting inside your web config
string newLink = System.Configuration.ConfigurationManager.AppSettings["QuizLink"].ToString();
msg.Bcc.Add(toAddresses);
msg.Subject = MailSubject;
msg.Body = MessageBody;
msg.IsBodyHtml = isBodyHtml;
msg.AlternateViews.Add(av);
sc.Send(msg);
}
catch (Exception ex)
{
throw ex;
}
}
protected void SendEmailTOAllUser()
{
string connString = "Data Source=localhost;Initial Catalog=TestDB;Integrated Security=True";
using (SqlConnection conn = new SqlConnection(connString))
{
var sbEmailAddresses = new System.Text.StringBuilder(2000);
string quizid = "";
// Open DB connection.
conn.Open();
string cmdText = "SELECT MIN (QuizID) As mQuizID FROM dbo.QUIZ WHERE IsSent <> 1";
using (SqlCommand cmd = new SqlCommand(cmdText, conn))
{
SqlDataReader reader = cmd.ExecuteReader();
if (reader != null)
{
while (reader.Read())
{
// There is only 1 column, so just retrieve it using the ordinal position
quizid = reader["mQuizID"].ToString();
}
}
reader.Close();
}
string cmdText2 = "SELECT Username FROM dbo.employee";
using (SqlCommand cmd = new SqlCommand(cmdText2, conn))
{
SqlDataReader reader = cmd.ExecuteReader();
if (reader != null)
{
while (reader.Read())
{
var sName = reader.GetString(0);
if (!string.IsNullOrEmpty(sName))
{
if (sbEmailAddresses.Length != 0)
{
sbEmailAddresses.Append(",");
}
// Just use the ordinal position for the user name since there is only 1 column
sbEmailAddresses.Append(sName).Append("@mailAddress.com");
}
}
}
reader.Close();
}
string cmdText3 = "UPDATE dbo.Quiz SET IsSent = 1 WHERE QuizId = @QuizID";
using (SqlCommand cmd = new SqlCommand(cmdText3, conn))
{
// Add the parameter to the command
var oParameter = cmd.Parameters.Add("@QuizID", SqlDbType.Int);
var sEMailAddresses = sbEmailAddresses.ToString();
string link = "<a href='http://localhost/test.aspx?testid=" + quizid + "'> Click here to participate </a>";
string body = @"................";
AlternateView av = AlternateView.CreateAlternateViewFromString(body, null, MediaTypeNames.Text.Html);
LinkedResource lr = new LinkedResource("contactUs.gif", MediaTypeNames.Image.Gif);
lr.ContentId="image1";
av.LinkedResources.Add(lr);
int sendCount = 0;
List<string> addressList = new List<string>(sEMailAddresses.Split(','));
StringBuilder addressesToSend = new StringBuilder();
if (!string.IsNullOrEmpty(quizid))
{
for (int userIndex = 0; userIndex < addressList.Count; userIndex++)
{
sendCount++;
if (addressesToSend.Length > 0)
addressesToSend.Append(",");
addressesToSend.Append(addressList[userIndex]);
if (sendCount == 10 || userIndex == addressList.Count - 1)
{
SendEmail(addressesToSend.ToString(), "", "........", body, true, av);
addressesToSend.Clear();
sendCount = 0;
}
}
// Update the parameter for the current quiz
oParameter.Value = quizid;
// And execute the command
cmd.ExecuteNonQuery();
}
}
conn.Close();
}
}