Here I like to explain how to consume a .net class in Dynamics NAV 2009 SP1 R2.Task 1: Create a .net dll to consume in NAV.
- Open Visual Studio 2008 and select Class Library project from the installed project templates. Enter the project name you like.
2. Copy the following codes.
using
System;
using
System.Collections.Generic;
using
System.Linq;
using
System.Text;
using
System.IO;
using
System.Net;
namespace
ProColFTP
{
publicclassProCol_FTP
{
string ftpaddress = “”, filetoupload = “”, userid = “”, password = “”, filetodownload = “”, filename2 = “”, errodesc = “”;
string[] filelist;
publicstring FTPAddress
{
get { return (ftpaddress); }
set
{
ftpaddress =
value;
}
}
publicstring FileToUpload
{
get { return (filetoupload); }
set { filetoupload = value; }
}
publicstring FileToDownload
{
get { return (filetodownload); }
set
{filetodownload =
value;}
}
publicstring Downloadtofilename
{
get { return (filename2); }
set
{filename2 =
value;}
}
publicstring UserId
{
get { return (userid); }
set
{userid =
value; }
}
publicstring Password
{
get { return (password); }
set
{ password =
value; }
}
publicstring ErrorDesc
{
get { return (errodesc); }
set { errodesc = value; }
}
publicbool UploadFile(string remotefilename)
{
errodesc =
“”;
try
{
FileInfo toUpload = newFileInfo(@filetoupload);
//string uploadfilename = @ftpaddress + “/” + toUpload.Name;
string uploadfilename = @ftpaddress + “/” + remotefilename;
FtpWebRequest request = (FtpWebRequest)WebRequest.Create(uploadfilename);
request.Method =
WebRequestMethods.Ftp.UploadFile;
request.Credentials =
newNetworkCredential(userid, password);
Stream ftpstream = request.GetRequestStream();
FileStream file = File.OpenRead(@filetoupload);
int length = 1024;
byte[] buffer = newbyte[length];
int bytesRead = 0;
do
{
bytesRead = file.Read(buffer, 0, length);
ftpstream.Write(buffer, 0, bytesRead);
}
while (bytesRead != 0);
file.Close();
ftpstream.Close();
return (true);
}
catch (Exception e1)
{
errodesc = e1.Message;
return (false);
}
}
publicbool DownloadFile()
{
errodesc =
“”;
try
{
WebClient request = newWebClient();
request.Credentials =
newNetworkCredential(userid, password);
byte[] fileData = request.DownloadData(ftpaddress + “/” + FileToDownload);
FileStream file = File.Create(@Downloadtofilename);
file.Write(fileData, 0, fileData.Length);
file.Close();
return (true);
}
catch (Exception e1)
{
errodesc = e1.Message;
return (false);
}
}
publicbool DeleteFile(string filetodelete)
{
try
{
string deletefilename = @ftpaddress + “/” + filetodelete;
FtpWebRequest ftpReq = (FtpWebRequest)FtpWebRequest.Create(deletefilename);
ftpReq.Credentials =
newNetworkCredential(userid, password);
ftpReq.Method =
WebRequestMethods.Ftp.DeleteFile;
FtpWebResponse ftpRes = (FtpWebResponse)ftpReq.GetResponse();
return (true);
}
catch (Exception e1)
{
return (false);
}
}
publicbool IsFileExist(string Filename)
{
FTPFileList();
for (int i = 0; i < filelist.Length; i++)
{
if (filelist[i] == null) break;
if (filelist[i].ToLower()==Filename.ToLower())
return(true);
}
return(false);
}
privatevoid FTPFileList()
{
filelist =
null;
filelist =
newstring[10000];
//string foldername = @ftpaddress + “\” + folder_name”;
string foldername = @ftpaddress;
FtpWebRequest request = (FtpWebRequest)WebRequest.Create(foldername);
request.Credentials =
newNetworkCredential(userid, password);
request.Method =
WebRequestMethods.Ftp.ListDirectory;
StreamReader streamReader = newStreamReader(request.GetResponse().GetResponseStream());
string fileName = streamReader.ReadLine();
int i = 0;
while (fileName != null)
{
fileName = streamReader.ReadLine();
filelist[i] = fileName;
i++;
}
request =
null;
streamReader =
null;
}
}
}
Build the solution and copy the dll file into Classic\Add-ins folder and Server\Add-ins folder.
Classic Add-in Folder
Service Add-ins Folder
Create a new navision Code Unit and define a DotNet data type variable.
DefineDotNet Type Variable
Click on SubType and click on Assembly. You can see your dll file that you copied on Client\Add-ins over the screen. Select the file and Click Ok.
If you view C/AL Symbol Menu (F5), you can see the class properties, Methods and Constructors…
C/AL Symbol Menu (F5)
The following code sets the Class property and call the methods.
Consume DotNet Class
The ‘FileToUpload’ method uploads the file into UploadDir folder and this class can be used to upload/download files to/from a ftp server and can used in Navision 2009 SP1 R2 RTC pages.
Hope this will help
