Visual Basic Interview Questions and Answers

What are the scopes of the class?
Public, private, Friend

Have you create Properties and Methods for your own Controls?
Properties Public variable of a Class
Method Public procedure of a class

Private Dim x as integer. Valid ?
Private cannot be used in front of DIM.

Different type of Instantiation?
Private Only for the Specific Module.
Public not creatable Private & Public
Multi Use - Variable we have to declare.
Single Use Not possible through dll.
Global Multiuse Have variable not Required to Declare.
Global Single Use - Only for exe.

What are the different types of Dialog Box?
Predefined, Custom, User Defined.

What is Seek Method which type of record set is available this?
Only in DbOpenTables.
Syntax: rs.index = "empno"
rs.seek "=" , 10
If with our setting the rs.index then run time error will occur.

What is Zorder Method?
Object.Zorder = 1 or 0 Place a Specified mdiform form or control at the front or back of the z-order with n its Graphical Level.

Can us able to set Instancing properties like Singleuse, GlobalSingleuse to ActiveXDll?
No.

What are properties available in Clip Board?
No Properties Available. Only the methods they are SetText, GetText, Setdata(), Getformat(), Clear.

What is the different between Microsoft ODBC Driver and Oracle OBDC Driver?
Microsoft ODBC driver will support all the methods and properties of Visual Basic. Where as the Oracle not.

What the RDO Methods and Events?
Methods Events
Begin Trans Validate
Commit Trans Reposition
Rollback Trans Error
Cancel Query Complied
Refresh
Update Controls
Update row

What is MAPI ?
Messaging Application programming Interface.

What is MDI form?
MDI Styles

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