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Code to embed an image in e-mail

In this code we will learn how to embed an image in mail using VB.NET.


Public Sub SendMail(ByVal message As String)
        Dim vars As Variables
        Dim myHtmlMessage As MailMessage
        Dim mySmtpClient As SmtpClient
        Dim retVal As Int32 = -1
        myHtmlMessage = New MailMessage()
        Dim FromAddress As String
        Dts.VariableDispenser.LockOneForWrite("from", vars)
        FromAddress = vars("from").Value.ToString().Trim()
        vars.Unlock()
        Dim ToAddress As String
        Dts.VariableDispenser.LockOneForWrite("to", vars)
        ToAddress = vars("to").Value.ToString().Trim()
        vars.Unlock()
        Dim CCAddress As String
        Dts.VariableDispenser.LockOneForWrite("cc", vars)
        CCAddress = vars("cc").Value.ToString().Trim()
        vars.Unlock()
        Dim SmtpClient As String
        Dts.VariableDispenser.LockOneForWrite("smtpServer", vars)
        SmtpClient = vars("smtpServer").Value.ToString().Trim()
        vars.Unlock()

        myHtmlMessage.From = New Mail.MailAddress(FromAddress)
        Dim tt As String()
        If (ToAddress.ToString().Trim().Length > 0) Then
            If (ToAddress.IndexOf(";") > 0) Then
                tt = ToAddress.Split(";")
                Dim c As String
                If (tt.Length > 0) Then
                    For Each c In tt
                        myHtmlMessage.To.Add(c)
                    Next
                End If
            Else
                myHtmlMessage.To.Add(ToAddress.ToString().Trim())
            End If
        End If
        Dim cc As String()
        If (CCAddress.ToString().Trim().Length > 0) Then
            If (CCAddress.IndexOf(";") > 0) Then
                cc = CCAddress.Split(";")
                Dim c As String
                If (cc.Length > 0) Then
                    For Each c In cc
                        myHtmlMessage.CC.Add(c)
                    Next
                End If
            Else
                myHtmlMessage.CC.Add(CCAddress)
            End If
        End If
        Dim MailSubject As String = " Email scheduling process"
        Dim mailBody As String = "Hi, </BR>" + message + "</BR> Thanks, </BR> XXX"
        Dim ApplicationPath As String ' Physical path of an image. Example: C:/images/
        Dts.VariableDispenser.LockOneForWrite("ApplicationPath", vars)
        ApplicationPath = vars("ApplicationPath").Value.ToString().Trim()
        vars.Unlock()
        ' EMBEDING IMAGE
        Dim contentId As String = "image1" ' giving ID to an image content
        Dim path As String = ApplicationPath + "\\myLogo.JPG"
        Dim myImage As String = "<img src=""cid:image1""/><br />"
        Dim mybody As String = String.Empty
        Dim linkedResource As System.Net.Mail.LinkedResource = New System.Net.Mail.LinkedResource(path)
        Dim av1 As System.Net.Mail.AlternateView
        linkedResource.ContentId = contentId
        linkedResource.ContentType.Name = path
        av1 = System.Net.Mail.AlternateView.CreateAlternateViewFromString(mailBody + "</BR>" + myImage, Nothing, System.Net.Mime.MediaTypeNames.Text.Html)
        av1.LinkedResources.Add(linkedResource)
        myHtmlMessage.AlternateViews.Add(av1)
  
        myHtmlMessage.Subject = MailSubject
        myHtmlMessage.IsBodyHtml = True
        mySmtpClient = New SmtpClient(SmtpClient)
        mySmtpClient.Credentials = CredentialCache.DefaultNetworkCredentials
        mySmtpClient.Send(myHtmlMessage)
   
    End Sub

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