Presence Check Example. In Visual Basic you can use the len function to find the length of a variable or form control. You can then check to if the length is 0 and if it is this means nothing has been entered, see the example below: Interface. Code when btnCheck is clicked. Visual Basic Samples Codes is another Visual Basic book written by the webmaster of our Visual Basic Tutorials, Dr.Liew. It comprises 258 pages of captivating contents and 48 fascinating Sample Codes. All the examples are explained in great details using easy-to-understand language and illustrated with gorgeous Images.

The sample programs in this book were developed using Visual Basic 6. However, they can be easily modified to build applications for VB.Net. Visual Basic 6 is a third-generation event-driven programming language first released by Microsoft in 1991. In Visual Basic 6, the sky's the limit. You can develop all kinds of applications, including educational apps, financial apps, games, multimedia apps, animations, database applications and more. Visual Basic 6 Samples Code comprises 290 pages of captivating content and 48 fascinating sample codes. All the examples are explained in great detail using easy-to-understand language and illustrated with gorgeous Images. By reading the book and using the sample source codes, you will master Visual Basic programming effortlessly! You will be able to: · Understand basic to intermediate concepts of Visual Basic programming. · Create your own Visual Basic 6 programs from scratch. · Get programming ideas from 48 interesting sample programs. · Modify the source codes easily to suit your needs.

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Sample Visual Basic Program Code

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