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.
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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.
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Classic Add-in Folder
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Service Add-ins Folder
Create a new navision Code Unit and define a DotNet data type variable.
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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.
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If you view C/AL Symbol Menu (F5), you can see the class properties, Methods and Constructors…
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C/AL Symbol Menu (F5)
The following code sets the Class property and call the methods.
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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
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