By Ed Robinson
This e-book is a whole technical consultant to upgrading Microsoft visible uncomplicated 6 purposes to Microsoft visible uncomplicated .NET, it covers all points of upgrading from APIs to ZOrders. This publication contains chapters on solving improve matters with types, language, information entry and COM+ companies. It additionally exhibits the way to upload price for your upgraded purposes with XML net prone, ADO.NET and .NET remoting. Its has 'big photo' architectural suggest, and incorporates a reference of functionality and item version alterations from visible uncomplicated 6. The textual content is is adorned with 1000's of before-and-after code samples, and the significant other CD is full of necessary improve examples. This e-book is a necessary reference for the hundreds of thousands of visible simple 6 programmers who're contemplating relocating as much as visible uncomplicated .NET.
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Extra resources for Upgrading Microsoft Visual Basic 6.0 to Microsoft Visual Basic .NET
The compiler then inserts additional logic to bind the method or property to the object during program execution. It becomes the responsibility of the runtime environment to catch any binding errors. Execution is less efficient because the runtime environment must resolve the variable types before it can perform an operation or method call. Take, for example, the following VisualÂ BasicÂ 6 method, which sets the Caption property value of a given label: Sub SetLabel( lbl, value ) lbl = value End Sub The compiler must insert code to evaluate whether lbl is an object and, if so, determine its default property.
The big breakthrough was the introduction of ActiveX Data Objects (ADO), with its flexible provider scheme. ADO was designed to provide a generic replacement for both DAO and RDO. It uses OLE DB to interface to various data providers, from comma-delimited text files to Microsoft Access databases to high-end database servers. NET as the next generation of data access. Why does Microsoft continue to introduce new data access technologies? It reflects the fact that data access itself is evolving. Writing scalable Web sites is a different programming problem from querying a Microsoft Access database on the local machine.
Why choose this order? For the simple reason that itâ s the easiest upgrade path. NET components from Visual Basic 6. NET component and the COM component at the same time. It also means dealing with GUID and versioning issues that can make COM development a complicated process. Starting with the client and moving up the dependency hierarchy keeps all of the COM GUIDs the same and avoids COM versioning issues. Keeping that rule in mind, youâ ll find that the rest of the process is simple. Break your application down into its core components, and work out the dependencies.
Upgrading Microsoft Visual Basic 6.0 to Microsoft Visual Basic .NET by Ed Robinson