Attachments help - C# using Obect API

Question

I'm in my first attempt at integrating GW functionality into a C# application. I am not an expert C# programmer either. Thus far I've been successful at getting logged into GW, creating a new mail message and sending it successfully. However adding code to attach a file to my message returns an exception from the GroupwareTypeLibrary with the unhelpful error message "Unknown Error". Below is my code. If I comment out the line:
objMessage.Attachments.Add("c:\reg.log",1,"reg.log ");
the program runs successfully, happily sending my mail to the recipent mailbox. I know the c:\reg.log file exists and I have permissions to it.
Any advice as to what I'm doing wrong would be of tremendous help, as I've already search and cruised all the forums on GW API I can find to no avail. Running GW 7.03 I think on client and server side.
using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using GroupwareTypeLibrary;
namespace GWEmailTest
class Program
public static void Main()
GroupwareTypeLibrary.Application objApplication = new GroupwareTypeLibrary.Application();
GroupwareTypeLibrary.Account objAccount;
GroupwareTypeLibrary.Messages objMessages;
GroupwareTypeLibrary.Message objMessage;
GroupwareTypeLibrary.Folder objMailBox;
GroupwareTypeLibrary.Recipients objRecipients;
GroupwareTypeLibrary.Recipient objRecipient;
objAccount = objApplication.Login("dpuls", "", "password", "", "");
objMailBox = objAccount.MailBox;
objMessages = objMailBox.Messages;
objMessage = objMessages.Add("GroupwareTypeLibrary.Message",4," ");
objRecipients = objMessage.Recipients;
objRecipient = objRecipients.Add("dpuls","","");
objMessage.Subject.PlainText = "Here's the message from C#!.";
objMessage.BodyText.PlainText = "Here's the report you wanted.";
objMessage.Attachments.Add("c:\reg.log",1,"reg.log ");
objMessage.Send();

Answer 1

Markus,
Thanks so much for your quick reply. I appreciate your willingness to help me overcome my ignorance. Here's what I found:
objMessage = objMessages.Add("GW.MESSAGE.MAIL", 4);
results in a C# compiler error "no overload method for 'add' requires '2' arguments". This tells me the third paramater is required for the GroupwareTypeLibary COM object, so I added the third null parameter back in, eliminating the compiler error. Then I still got the same "unknown error" exception back from the COM library as before.
So I went back to my shotgun approach of trying variations on parameter passing (instance variables instead of literals, etc). I noticed at one point when I tried another test file that I got a compiler error on a string literal of the path\filename "c:\csharptest.txt". Aha, says I ......
To make a long story short, by happenstance, my "c:\reg.log" parameter gets read in C# as containing an escape sequence reference, i.e. "\r" and when I changed to another test file it read "c:\csharptest.txt" as an INVALID escape sequence "\c". The fix then was to correct the problem of the reading of escape sequences in my string literal by changing my line of code to :
objMessage.Attachments.Add(@"c:\reg.log","1","");
Problem solved! Thanks again for your help.
dennis puls
Originally Posted by Markus Colorado
I suppose the way you're adding a draft message to the collection is false.
>> objMessages = objMailBox.Messages;
>> objMessage = objMessages.Add("GroupwareTypeLibrary.Message",4," ");
The function "Add()" takes only 2 parameters, 'ClassName' + 'ObjType'.
'ClassName' stands for the sort/subtype of message you'd like to create.
'ObjType' stands for 'draft' or 'personal'
Try the following:
objMessages = objMailBox.Messages;
objMessage = objMessages.Add("GW.MESSAGE.MAIL", 4);
The rest should be fine; the code for adding the attachment seems OK.
Markus
"dpuls" <[email protected]> schrieb im Newsbeitrag
news:[email protected]...
>
> I'm in my first attempt at integrating GW functionality into a C#
> application. I am not an expert C# programmer either. Thus far I've
> been successful at getting logged into GW, creating a new mail message
> and sending it successfully. However adding code to attach a file to my
> message returns an exception from the GroupwareTypeLibrary with the
> unhelpful error message "Unknown Error". Below is my code. If I
> comment out the line:
> objMessage.Attachments.Add("c:\reg.log",1,"reg.log ");
>
> the program runs successfully, happily sending my mail to the recipent
> mailbox. I know the c:\reg.log file exists and I have permissions to
> it.
>
> Any advice as to what I'm doing wrong would be of tremendous help, as
> I've already search and cruised all the forums on GW API I can find to
> no avail. Running GW 7.03 I think on client and server side.
>
> ****************************
> using System;
> using System.Collections.Generic;
> using System.Text;
> using System.IO;
> using GroupwareTypeLibrary;
>
> namespace GWEmailTest
> {
> class Program
> {
> public static void Main()
> {
> GroupwareTypeLibrary.Application objApplication = new
> GroupwareTypeLibrary.Application();
> GroupwareTypeLibrary.Account objAccount;
> GroupwareTypeLibrary.Messages objMessages;
> GroupwareTypeLibrary.Message objMessage;
> GroupwareTypeLibrary.Folder objMailBox;
> GroupwareTypeLibrary.Recipients objRecipients;
> GroupwareTypeLibrary.Recipient objRecipient;
>
> objAccount = objApplication.Login("dpuls", "", "password", "",
> "");
> objMailBox = objAccount.MailBox;
> objMessages = objMailBox.Messages;
> objMessage = objMessages.Add("GroupwareTypeLibrary.Message",4," ");
> objRecipients = objMessage.Recipients;
> objRecipient = objRecipients.Add("dpuls","","");
> objMessage.Subject.PlainText = "Here's the message from C#!.";
> objMessage.BodyText.PlainText = "Here's the report you wanted.";
> objMessage.Attachments.Add("c:\reg.log",1,"reg.log ");
> objMessage.Send();
> }
> }
> }
> ****************************
>
>
> --
> dpuls
> ------------------------------------------------------------------------
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