Graph API attachment not accepting ContentBytes

Question

While using microsoft.graph for .net version 4.3
I am encountering the error that microsoft.graph.attachment does not accept property
ContentBytes or Odata or Additional Data

Can you guys help me resolve this issue i am trying to add an attachment with the mail
Creating a reply
Adding the attachment
Sending mail
Above are the steps i am following.

Answer 1

Hello @Akash Sharma Thank you for reaching out. This is happening because the resource type is wrong, the attachment in this case is of type "@odata.type": "#microsoft.graph.fileAttachment" see documentation here: fileattachment

The microsoft.graph.attachment looks like this: attachment

{  
  "contentType": "string",  
  "id": "string (identifier)",  
  "isInline": true,  
  "lastModifiedDateTime": "String (timestamp)",  
  "name": "string",  
  "size": 1024  
}  

To fix this issue, ensure the type is correct.

Let me know whether this helps, and if you have further questions.