By Ed Robinson
This publication is a whole technical advisor to upgrading Microsoft visible uncomplicated 6 functions to Microsoft visible uncomplicated .NET, it covers all features of upgrading from APIs to ZOrders. This e-book comprises chapters on solving improve matters with kinds, language, info entry and COM+ providers. It additionally exhibits the right way to upload worth for your upgraded purposes with XML net prone, ADO.NET and .NET remoting. Its has 'big photograph' architectural propose, and incorporates a reference of functionality and item version adjustments from visible easy 6. The textual content is is adorned with hundreds and hundreds of before-and-after code samples, and the significant other CD is jam-packed with worthwhile improve examples. This e-book is an important reference for the thousands of visible easy 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
Example of Early Binding The following code shows an example of the use of early binding. Notice that all of the functionâ s parameters, the return type, and the local variables are explicitly typed. Nothing is explicitly or implicitly declared as Variant. Close End Function Late Binding Late binding occurs when the Variant type is used (either implicitly or explicitly). When you declare a variable as Variant, the compiler cannot know your exact intentions. The compiler then inserts additional logic to bind the method or property to the object during program execution.
Part of the problem would have been avoided if lbl were explicitly declared as an instance of a Label control. NET. Simple modifications to the code make the result of the Upgrade Wizard more predictable: • Change Test to return Boolean. • Change the definition of lbl to a variable of type Label. • Explicitly type the frm parameter to be Form1. Text = "Another Test" Test = True End Function The Test function has now upgraded cleanly with no errors. The modifications to the original Visual Basic 6 code took very little work and also added a level of clarity to the original application.
NET. You can use the text box and the Browse button to change the location of this directory, but in most cases you should simply accept the default name. You can always move the directory later simply by copying it to a different location. Figure 5-4 Specifying a destination directory. If the destination directory already contains files, these will be deleted to make room for the new project. NET. Click Next to move to page 4. 5. NET folder doesnâ t exist yet, a warning message appears asking you if you want to create it.
Upgrading Microsoft Visual Basic 6.0 to Microsoft Visual Basic .NET by Ed Robinson