使用Lotus Notes发送邮件报错：Parameter count mismatch求助

Hey there, let's break down how to track down that parameter mismatch error you're hitting. This error almost always means you're calling a method or function with too few (or sometimes too many) arguments, so let's focus on the most likely spots in your code snippet:

Common Culprits to Check #

1. Incomplete CreateObject Call #

Your code cuts off at Session = CreateOb...—this is a red flag right away. The CreateObject function requires exactly one mandatory parameter: the ProgID of the object you want to create. For Lotus Notes, that's "Notes.Session". Also, remember that in VBA, you must use the Set keyword when assigning objects, so this line should look like:

Set Session = CreateObject("Notes.Session")

If you omitted the ProgID parameter (or forgot Set), this would trigger a parameter count mismatch immediately.

2. Database/Mailbox Opening Methods #

You've defined variables like ServerName and DataBaseName, which suggests you're probably calling Session.GetDatabase() or Maildb.Open() later in the code. These methods require specific numbers of parameters:

• Session.GetDatabase(ServerName, DatabaseName) needs 2 core parameters (plus optional ones for open mode/password)
• Maildb.Open() can take up to 4 parameters (server, database, username, password)
  If you pass fewer arguments than the method expects (or mix up optional vs required parameters), you'll get this error. Double-check that your method calls match the required parameter count.

3. Attachment Embedding Calls #

Your code references AttachME and EmbedObj, which are likely for adding attachments via the RichTextItem.EmbedObject method. This method requires at least 3 parameters (object type, source file, object name), with optional extras. A correct call looks like:

Set EmbedObj = AttachME.EmbedObject(1454, "", "C:\Path\To\Your\File.pdf", "")

If you skip any mandatory parameters here, that's another common source of the mismatch error.

4. Forgotten Set Keyword for Object Assignments #

While this isn't a direct parameter count issue, forgetting Set when assigning objects (like Maildb = Session.GetDatabase(...) instead of Set Maildb = Session.GetDatabase(...)) can sometimes trigger confusing errors that mimic parameter mismatches. Make sure every object variable assignment uses Set.

Next Steps to Fix #

• First, finish writing the incomplete lines in your code (especially the CreateObject call)
• Go line by line through every method/function call and confirm you're passing the right number of arguments
• Add Set to all object variable assignments if you haven't already

内容的提问来源于stack exchange，提问作者donchuan