Microsoft MVP (Most Valuable Professorial) Award 2013

Hi All,

:) :) Microsoft awarded me by MVP 2013......... :)  :)

This award is given to exceptional technical community leaders who actively share their high quality, real world expertise with others. I would like to say thanks to Microsoft ,MVP  team members and all blog readers who make this possible for me.

Thanks again to all of you.

To read more about MVP follow below link

http://blogs.msdn.com/b/mvpawardprogram/archive/2013/10/01/new-and-renewed-mvps-announced.aspx

Regards

Deepak Agarwak aka Harry

Connecting to Databases through X++ PART -III

Connecting to Databases through X++ PART -III

      OLEDB Connection:

OLEDB is a set of APIs designed by Microsoft and used for accessing different types of data stored in a uniform manner. Dynamics AX as such doesn’t have any specific classes built for this purpose. But one can make use of .Net Framework’s System.Data.OleDb namespace through AX’s COM Interoperability feature and use it in AX.

Below is an example code that depicts this scenario:

static void dbOLEDBConnection(Args _args)
{
    System.Exception                    e;
    System.Data.OleDb.OleDbConnection   objConn;
    System.Data.OleDb.OleDbCommand      cmdSelect;
    System.Data.OleDb.OleDbDataReader   reader;
    InteropPermission                   perm;
    str connectStr = "Provider=SQLNCLI.1;Integrated Security=SSPI;"+
                     "Persist Security Info=False;Initial Catalog=AX2009;Data Source= theAxapta ";
    str exceptionStr;
    ;

    try
    {
        perm = new InteropPermission(InteropKind::ClrInterop);
        if (perm == null)
        {
            throw error("Error with file permissions");
        }
        perm.assert();

        objConn = new System.Data.OleDb.OleDbConnection(connectStr);
        objConn.Open();

        cmdSelect   = objConn.CreateCommand();
        cmdSelect.set_CommandText("SELECT * FROM CustTable where DATAAREAID = ‘CEU’");
        reader      = cmdSelect.ExecuteReader();

        while (reader.Read())
        {
            info(reader.GetString(0));
        }
    }
    catch(Exception::CLRError)
    {
        CodeAccessPermission::revertAssert();

        perm = new InteropPermission(InteropKind::ClrInterop);
        if (perm == null)
        {
            return;
        }
        perm.assert();

        e = ClrInterop::getLastException();

        CodeAccessPermission::revertAssert();

        while( e )
        {
            exceptionStr += e.get_Message();
            e = e.get_InnerException();
        }
        info(exceptionStr);
    }
    catch
    {
        error("An Exception has occurred");
    }

    if(objConn)
        objConn.Close();
}

Other related posts:

Connecting to Databases through X++ PART -I

Connecting to Databases through X++ PART -II

Connecting to Databases through X++ PART -III

Connecting to Databases through X++ PART -IV

-Harry