Does VB Supports OOPS Concepts? Explain..

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I want to develop a stand alone application which can communicate with the existing applications in the system. On which this application should be based on: Standard Exe, Active-X Exe, Active-X Dll.

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What is the use of command Object?

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Difference between Class Module and Standard Module?

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What is the max size of textbox?

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What is the need of zorder method?

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What is the use of Visual Basic Document file?

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How will you define a function to accept optional arguments?

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What is the difference between Msgbox Statement and MsgboxQ function?

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What is the difference between Single and Double in VB?

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What is a datacontrol?

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How to trap Data Base Error?

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