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From the Editor-in-Chief of PowerBuilder Developer's Journal

Bruce Armstrong

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Top Stories by Bruce Armstrong

PowerBuilder 12.5 introduced a number of significant enhancements to web services support, both for creation and consumption. In particular, the following were introduced as new features in PowerBuilder.NET: WCF client proxy WCF service target REST client proxy We're going to look at what those new features provide and how to use them. We're also going to look at how we can package some of that functionality so that it can be used from PowerBuilder Classic applications as well. Windows Communication Foundation (WCF) First though, some background. When support for a web service client was first introduced in PowerBuilder 9, it was done based on an open source library called EasySOAP. There were some limitations with that implementation, primarily because the EasySOAP library only supported SOAP 1.1, was limited to XML over HTTP transport, and provided no support for an... (more)

User Group Malaise?

Read an interesting article about the .NET Developer Association user group in Redmond, Washington. You would think that the user group in Microsoft's backyard (the meetings are held at Microsoft's offices) wouldn't have any problems lining up guest speakers and drawing a crowd. Well, it looks like they do because they've had to cancel several recent meetings and have proposed taking a six-month break to try to determine how to revitalize the group.[1] It had me wondering why such a group would have difficulty holding meetings. Of course, the issue may be specific to that partic... (more)

DataWindow.NET How To: Data Entry Form

Last month we looked at Microsoft's .NET Pet Shop sample application and saw how DataWindow.NET technology could be used in the data access layer of an ASP.NET-based application to reduce the its complexity and increase developer productivity. This month we'll look at another Microsoft sample application to see what benefits DataWindow.NET technology can provide when used for data presentation and data access in a Windows Forms (WinForms) application. To fully appreciate how much DataWindow.NET simplifies the development of database applications in Windows Forms, you'll need the ... (more)

DataWindow.NET How To: DataWindow Formatting

Last month we saw how DataWindow.NET technology can be a benefit when used for data presentation and data access in a Windows Forms (WinForms) application. This month we're going to look at how DataWindow.NET technology is a simpler but more powerful way of formatting data in the presentation layer. Once again, we'll be taking a sample application provided by Microsoft for .NET and implementing it using DataWindow.NET technology. In this case, we're using the Visual Basic .NET Code Sample: DataGrid Formatting sample application available at www.microsoft.com/downloads/details.as... (more)

Supporting Oracle Failover in PowerBuilder Applications

Oracle has provided support for failing over database connections and, through Transparent Application Failover (TAF), doing so in a way that allows connected applications to continue functioning relatively uninterrupted during and after the failover. The connected application has to work with the Oracle client layer to participate in the failover, rather than just erroring out when the original connection is lost. Failover is first configured in the Oracle client layer through the client TNSNAMES.ORA file. For example, if you have two Oracle instances, an ORACLEA instance, whic... (more)