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From Windows to Linux 

Did you know that Powerbuilder 2019 could run on Linux ?

Since Powerbuilder 2019 is now in 64 bit, it is now a lot easier to run on Linux using wine64

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ISSUE: Receive error “No Network Connection” on logon to PowerBuilder

 

SYMPTOM: Error “No Network Connection” was received on every attempt to open PowerBuilder and occurs immediately on version installation. Experienced on install of  V19 - but may be experienced in other versions.  When initiating PowerBuilder process hangs for a long time and then returns a message “No Network Connection”. You exit and the application closes.

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This document will describe how to work with transactions for CRUD operations (create, read, update and delete) in .NET DataStore.

For the full content of the document, see https://www.appeon.com/support/documents/appeon_online_help/powerbuilder/Working_with_Transactions_in_.NET_DataStore_and_ModelStore/

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This tutorial demonstrates the basics of creating, in SnapDevelop, a Web API with ASP.NET Core that will use .NET DataStore as its data manipulation component.

In this tutorial, you will learn to:

  • Create a Web API Project
  • Test the API
  • Add a Database Context
  • Register the Database Context
  • Add a .NET DataStore Model
  • Add a Service
  • Perform CRUD Operations Using the Web API
  • Call the Web API from PowerBuilder

To view the full content of the tutorial, see https://www.appeon.com/support/documents/appeon_online_help/powerbuilder/CRUD_Operations_with_.NET_DataStore/index.html

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Support for the JSON format was added in the PowerBuilder 2017 R2 release and then enhanced in 2017 R3.  PowerBuilder 2019 contains even more enhancements in this area, particularly with regard to:

  1. Enhanced JSONParser
  2. Enhanced JSONPackage
  3. DataWindows Row Level Import/Export
  4. New ModelStore JSON Format

 

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Two factor authentication is a way of increasing the security of an application by requiring the user to provide more than a simple password (one factor authentication).  Two factor authentication utilizes two of the following factors to identify the user:

1.  Knowledge - something you know - for example, your password

2.  Possession - something you have - for example, your cell phone or access to your email account

3.  Inherent - something you are - for example, fingerprints or eye iris

The third factor is out of scope for this particular article We're going to look at adding the second form (possession) to a PowerBuilder application. Specifically, we're What going to use Google Authenticator, an application for mobile devices (and the desktop) that generates time based one time temporary passwords (TOTP) for use with 2FA.

The sample code for this article is available on CodeXchange.