從我讀過的內容來看，這是不可能的，但我還是要問，因為也許我錯過了另一種選擇......
VB.Net Windows 表單應用程式。
此應用程式偶爾需要發送電子郵件，這些電子郵件是在用戶郵件客戶端中創建的，然后他們可以對其進行編輯和發送。這不會自動發送；它必須由用戶手動發送。
我們決定使用 MAPI，因為這樣可以使其與各種電子郵件客戶端兼容，而不是強制使用某種形式的 Outlook；不是每個人都是 MS 的粉絲！
這段代碼作業正常，但問題是我需要在電子郵件中發送一個 URL，該 URL 被分成兩行并且不能立即“點擊”。
我希望能夠以HTML格式發送這一點，但MAPI似乎并不支持它。
我們已經避免使用 SMTP 客戶端，因為這是用戶需要設定的另一件事；使用 MAPI，它利用 IT 部門已經建立的現有電子郵件帳戶以及他們可能不想向用戶透露的詳細資訊。
那么，有沒有一種創建電子郵件的方法，它不使用 SMTP 客戶端以 HTML 格式發送電子郵件，并且不花費一臂之力（又名 aspose :-)）？
Public Function sendMAPI(emailAddy As String, subj As String, body As String, Optional attachement As String = "") As Boolean
Dim mapi As New SendFileTo.MAPI
'Dim emailAddy As String = getFundingEmail(cmbFundedBy.Text)
mapi.AddRecipientTo(emailAddy)
If attachement = "" Then
Else
mapi.AddAttachment(attachement)
End If
Dim q = mapi.SendMailPopup(subj, body)
If mapi.GetLastError.Contains("OK") Then
If Not UpdateUserLog(Now(), sUsername, "eMail to " emailAddy " created in MAPI client") Then
MessageBox.Show("Unable to update user log")
End If
Return True
Else
If Not UpdateUserLog(Now(), sUsername, "eMail to " emailAddy " *NOT* created in MAPI client") Then
MessageBox.Show("Unable to update user log")
End If
Return False
End If
End Function
Imports System
Imports System.Runtime.InteropServices
Imports System.IO
Imports System.Collections.Generic
Imports System.Windows.Forms
Namespace SendFileTo
Class MAPI
Public Function AddRecipientTo(ByVal email As String) As Boolean
Return AddRecipient(email, howTo.MAPI_TO)
End Function
Public Function AddRecipientCC(ByVal email As String) As Boolean
Return AddRecipient(email, howTo.MAPI_TO)
End Function
Public Function AddRecipientBCC(ByVal email As String) As Boolean
Return AddRecipient(email, howTo.MAPI_TO)
End Function
Public Sub AddAttachment(ByVal strAttachmentFileName As String)
m_attachments.Add(strAttachmentFileName)
End Sub
Public Function SendMailPopup(ByVal strSubject As String, ByVal strBody As String) As Integer
Return SendMail(strSubject, strBody, MAPI_LOGON_UI Or MAPI_DIALOG)
End Function
Public Function SendMailDirect(ByVal strSubject As String, ByVal strBody As String) As Integer
Return SendMail(strSubject, strBody, MAPI_LOGON_UI)
End Function
<DllImport("MAPI32.DLL")>
Private Shared Function MAPISendMail(ByVal sess As IntPtr, ByVal hwnd As IntPtr, ByVal message As MapiMessage, ByVal flg As Integer, ByVal rsv As Integer) As Integer
End Function
Private Function SendMail(ByVal strSubject As String, ByVal strBody As String, ByVal how As Integer) As Integer
Dim msg As MapiMessage = New MapiMessage()
msg.subject = strSubject
msg.noteText = strBody
msg.recips = GetRecipients(msg.recipCount)
msg.files = GetAttachments(msg.fileCount)
m_lastError = MAPISendMail(New IntPtr(0), New IntPtr(0), msg, how, 0)
If m_lastError > 1 Then
MessageBox.Show("MAPISendMail failed! " GetLastError(), "MAPISendMail")
End If
Cleanup(msg)
Return m_lastError
End Function
Private Function AddRecipient(ByVal email As String, ByVal howTo As howTo) As Boolean
Dim recipient As MapiRecipDesc = New MapiRecipDesc()
recipient.recipClass = CType(howTo, Integer)
recipient.name = email
m_recipients.Add(recipient)
Return True
End Function
Private Function GetRecipients(ByRef recipCount As Integer) As IntPtr
recipCount = 0
If m_recipients.Count = 0 Then
Return 0
End If
Dim size As Integer = Marshal.SizeOf(GetType(MapiRecipDesc))
Dim intPtr As IntPtr = Marshal.AllocHGlobal(m_recipients.Count * size)
Dim ptr As Integer = CType(intPtr, Integer)
Dim mapiDesc As MapiRecipDesc
For Each mapiDesc In m_recipients
Marshal.StructureToPtr(mapiDesc, CType(ptr, IntPtr), False)
ptr = size
Next
recipCount = m_recipients.Count
Return intPtr
End Function
Private Function GetAttachments(ByRef fileCount As Integer) As IntPtr
fileCount = 0
If m_attachments Is Nothing Then
Return 0
End If
If (m_attachments.Count <= 0) Or (m_attachments.Count > maxAttachments) Then
Return 0
End If
Dim size As Integer = Marshal.SizeOf(GetType(MapiFileDesc))
Dim intPtr As IntPtr = Marshal.AllocHGlobal(m_attachments.Count * size)
Dim mapiFileDesc As MapiFileDesc = New MapiFileDesc()
mapiFileDesc.position = -1
Dim ptr As Integer = CType(intPtr, Integer)
Dim strAttachment As String
For Each strAttachment In m_attachments
mapiFileDesc.name = Path.GetFileName(strAttachment)
mapiFileDesc.path = strAttachment
Marshal.StructureToPtr(mapiFileDesc, CType(ptr, IntPtr), False)
ptr = size
Next
fileCount = m_attachments.Count
Return intPtr
End Function
Private Sub Cleanup(ByRef msg As MapiMessage)
Dim size As Integer = Marshal.SizeOf(GetType(MapiRecipDesc))
Dim ptr As Integer = 0
If msg.recips <> IntPtr.Zero Then
ptr = CType(msg.recips, Integer)
Dim i As Integer
For i = 0 To msg.recipCount - 1 Step i 1
Marshal.DestroyStructure(CType(ptr, IntPtr), GetType(MapiRecipDesc))
ptr = size
Next
Marshal.FreeHGlobal(msg.recips)
End If
If msg.files <> IntPtr.Zero Then
size = Marshal.SizeOf(GetType(MapiFileDesc))
ptr = CType(msg.files, Integer)
Dim i As Integer
For i = 0 To msg.fileCount - 1 Step i 1
Marshal.DestroyStructure(CType(ptr, IntPtr), GetType(MapiFileDesc))
ptr = size
Next
Marshal.FreeHGlobal(msg.files)
End If
m_recipients.Clear()
m_attachments.Clear()
m_lastError = 0
End Sub
Public Function GetLastError() As String
If m_lastError <= 26 Then
Return errors(m_lastError)
End If
Return "MAPI error [" m_lastError.ToString() "]"
End Function
ReadOnly errors() As String = New String() {"OK [0]", "User abort [1]", "General MAPI failure [2]", "MAPI login failure [3]", "Disk full [4]", "Insufficient memory [5]", "Access denied [6]", "-unknown- [7]", "Too many sessions [8]", "Too many files were specified [9]", "Too many recipients were specified [10]", "A specified attachment was not found [11]", "Attachment open failure [12]", "Attachment write failure [13]", "Unknown recipient [14]", "Bad recipient type [15]", "No messages [16]", "Invalid message [17]", "Text too large [18]", "Invalid session [19]", "Type not supported [20]", "A recipient was specified ambiguously [21]", "Message in use [22]", "Network failure [23]", "Invalid edit fields [24]", "Invalid recipients [25]", "Not supported [26]"}
Dim m_recipients As New List(Of MapiRecipDesc)
Dim m_attachments As New List(Of String)
Dim m_lastError As Integer = 0
Private Const MAPI_LOGON_UI As Integer = &H1
Private Const MAPI_DIALOG As Integer = &H8
Private Const maxAttachments As Integer = 20
Enum howTo
MAPI_ORIG = 0
MAPI_TO
MAPI_CC
MAPI_BCC
End Enum
End Class
<StructLayout(LayoutKind.Sequential)>
Public Class MapiMessage
Public reserved As Integer
Public subject As String
Public noteText As String
Public messageType As String
Public dateReceived As String
Public conversationID As String
Public flags As Integer
Public originator As IntPtr
Public recipCount As Integer
Public recips As IntPtr
Public fileCount As Integer
Public files As IntPtr
End Class
<StructLayout(LayoutKind.Sequential)>
Public Class MapiFileDesc
Public reserved As Integer
Public flags As Integer
Public position As Integer
Public path As String
Public name As String
Public type As IntPtr
End Class
<StructLayout(LayoutKind.Sequential)>
Public Class MapiRecipDesc
Public reserved As Integer
Public recipClass As Integer
Public name As String
Public address As String
Public eIDSize As Integer
Public enTryID As IntPtr
End Class
End Namespace
uj5u.com熱心網友回復：
使用 Simple MAPI ( MAPISendMailW)時有一個技巧- 您需要將正文設定為NULL并附加一個 HTML 檔案。此檔案將用作訊息正文！
轉載請註明出處，本文鏈接：https://www.uj5u.com/qukuanlian/376588.html
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