use list<string> in X++

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Posted on by Walid Gamal

Hi All

I need to Sent Mails from Gmail

So I created Project in Visual studio using C# to sent Mails and i test it in Console Application and Working Correctly.

the Code of C# working Fine but when i used it in AX

It give me an error of incompatible Argument because i define email attachments as List<String>

but in AX i use List.

this is C# Code :

using System;
using System.IO;
using System.Data;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net.Mail;
using System.Collections;
using System.Net.Mime;

namespace SendMail
{
    public class SendMail
    {
        public string SendMessage(string recipientsEmail, string ccEmail, string emailSubject, string emailBody, List<String> emailAttachments)
        {
            try
            {
                //For Sending to more than one recipients
                string to = recipientsEmail;
                string[] ToMultiple = to.Split(';');

                //For Sending to more than one CC
                string CC = ccEmail;
                string[] CCMultiple = CC.Split(';');

                String ErrorMessage = "";

                //Connect to SMTP of Gmail
                MailMessage mail = new MailMessage();
                SmtpClient SmtpServer = new SmtpClient("smtp.gmail.com");

                //Email Details
                mail.From = new MailAddress("Mail Account");

                //Sending To Addresses
                foreach (var substring in ToMultiple)
                {
                    bool Totest = IsValidEmail(substring);
                    if (Totest == true)
                    {
                        mail.To.Add(substring);
                    }
                    else
                    {
                        ErrorMessage = "Invalid Email : " + substring + "\n";
                    }
                }

                //CC Mail Details
                if (!string.IsNullOrEmpty(ccEmail))
                {
                    foreach (var ccString in CCMultiple)
                    {
                        bool CCtest = IsValidEmail(ccString);
                        if (CCtest == true)
                        {
                            mail.CC.Add(ccString);
                        }
                        else
                        {
                            ErrorMessage = "Invalid Email : " + ccString + "\n";
                        }
                    }
                }

                //add attachments
                if (emailAttachments != null)
                {
                    foreach (string attach in emailAttachments)
                    {
                        if (File.Exists(attach))
                        {
                            Attachment attached = new Attachment(attach, MediaTypeNames.Application.Octet);
                            mail.Attachments.Add(attached);
                        }
                        else
                        {
                            ErrorMessage = "File : " + attach + "Not Exist. \n";
                            return ErrorMessage;
                        }
                    }
                }

                //Email Body and Subject
                mail.Subject = emailSubject;

                if (ErrorMessage == "")
                {
                    mail.Body = emailBody;
                }
                else
                {
                    mail.Body = emailBody + "\n The Mail Ended with the Following Errors : \n" + ErrorMessage;
                }

                //Connect to Port and Credentials
                SmtpServer.Port = 587;
                SmtpServer.Credentials = new System.Net.NetworkCredential("Account Mail", "Password");
                SmtpServer.EnableSsl = true;

                //Send Mail
                SmtpServer.Send(mail);
                return "";

            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.ToString());
                return "Error in Connecting to Gmail SMTP.";
            }
        }

        //Validate Email
        bool IsValidEmail(string email)
        {
            try
            {
                MailAddress m = new MailAddress(email);

                return true;
            }
            catch (FormatException)
            {
                return false;
            }
        }
    }
}

So how can i use list to Correct this Error?

Regards.

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Martin Dráb 237,976 Most Valuable Professional on at

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Please show us the code you have problem with, which is your X++ code, not the C# code above.

Nevertheless note that X++ in AX 2012 has no support for generic types, therefore if you really must use them, it's a bit tricky. A better approach is using non-generic types; for example, use a StringCollection or an array or strings.

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Community Member on at

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Walid,

The following link provides you detailed comparison of List class usage in X++ & C#.

msdn.microsoft.com/.../cc967436.aspx

Try it out!!

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Walid Gamal on at

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public str dispatchEmailWithError() { str errorMessege = ""; print("Email Dispatching Satrted. Subject:"); SsmGmail.SendMessage(recipientsEmail,ccEmail,emailSubject,emailBody,emailAttachments); print("Email Dispatched"); return errorMessege; }

the Error is :

Argument '5' is incompatible with the required type. \Classes\CustomEmailDispatcher\dispatchEmailWithError 7 dispatchEmailWithError Err:11

Regards.

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Walid Gamal on at

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Hi All

Another Note when i write my SsmGmail.SendMessage(

It Say in Emailattachments -> List ' 1 emailattachments

What is the meaning of that list ' 1 ?

Regards.

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Martin Dráb 237,976 Most Valuable Professional on at

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You forgot to mention the type of emailAttachments variable, but it's clearly something else than List<string>.

List`1 means a List with a single generic parameter; it's just a different syntax for List<T>.

Again, you can't directly declare generic types in X++, therefore you should stop using List<T> as a parameter.

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Walid Gamal on at

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Hi Matrin

I use it as String in C# Code but as List in X++ Code

and when call my C# Code in AX i use this Function List.ToString but it didn't sent any mail When Testing

public str dispatchEmailWithError() { str errorMessege = ""; print("Email Dispatching Satrted. Subject:"); SsmGmail.SendMessage(recipientsEmail,ccEmail,emailSubject,emailBody,emailAttachments.toString()); info(emailAttachments.toString()); print("Email Dispatched"); return errorMessege; }

How Can i achieve this ?

Regards.

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Martin Dráb 237,976 Most Valuable Professional on at

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So you've changed your code and now you're using string instead of List<String> for the fifth parameter, right? Please show us your updated code.

Reqarding your problem, look at what string you're sending there - I think you'll find that it's a complete nonsense, because List.toString() doesn't give you anything useful.

Why exactly are you trying to use a string instead of the solutions I suggested? I thought you wanted a collection, which seems to confirmed by the fact that you're still using a List in X++.

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Community Member on at

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Refer the below links:

community.dynamics.com/.../661343

http://dotnet-posts.blogspot.in/2015/02/marshalling-net-c-types-to-ax2012-xx.html

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