VSTO Outlook Mark email as read

Question

Hi - I am using VSTO outlook 0365 & visual stidio 2019 for development.

I followed this code and its working fine to read unread email from specific folder.

But I am not able to mark the email as read once the attachment is saved to a folder

newEmail.UnRead = false;  

This won't work because this will mark everything as read

static void IterateMessages(Outlook.Folder folder)  
{  
    var fi = folder.Items;  
    if (fi != null)  
    {  
        foreach (Object item in fi)  
        {  
            Outlook.MailItem mi = (Outlook.MailItem)item;  
            var attachments = mi.Attachments;  
            if (attachments.Count != 0)  
            {  
                for (int i = 1; i <= mi.Attachments.Count; i++)  
                {  
                    Console.WriteLine("Attachment: " + mi.Attachments[i].FileName);  
                }  
            }  
        }  
    }  
}  


 **mi.Attachments[i].SaveAsFile(pathToSaveFile);**  

Appreciate any help..

Answer 1

I'm not coding in C but in VB works something like that

Private Sub zItems_ItemAdd(ByVal Item As Object)  
    On Error Resume Next  
    Item.UnRead = False  
    Item.Save  
End Sub  

So you should save object after parameter change.