Titlebook: Essential Visual Basic 6.0 fast; John Cowell Textbook 2000 Springer-Verlag London Limited 2000 Debugging.Programming Languages.SQL.Visual

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Debugging,t possible to prove that it is completely without error. Visual Basic has some useful tools that help you to track down bugs in your application when it does not perform as expected. In this chapter we are going to look at different types of bugs and how to use the debugger to find out where problem

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The Data Form Wizard,r to a query which uses many tables. When a query is executed a . object is produced that represents all of the records, returned by the query. The Data Form Wizard allows you to create forms which display the query results one record at a time, or many records using a grid. The Data Form Wizard use

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ADO Data Control Events,ds of the . object. We can duplicate the functionality of the ADO data control by writing a few lines of Visual Basic code and add additional functionality to allow new records to be entered into the database and existing records to be amended or deleted.

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Controlling Program Flow,n for an older person: the application calculates a different cost depending on age. In the last chapter we saw how to respond to the events which occur when an application runs, but we did not see how to take these sorts of decisions, that is how to control the program flow.

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