Visual Basic Interview Questions(81-90)

Different type of Passing Value?
By value, By ref, Optional, Param Array. Note:- Optional keyword cannot be used while declaring arguments for a function using param array.

What are types of binding?
Assigning variable with defined memory space.
Late Binding – Memory size is allotted in later stage.
Ex:- Dim x as object
Early Binding – Memory size is allotted while declaring itself. New Key word is important.
Ex:- Dim x as New Object
What is Dataware Control?
Any control bound to Data Control.
Ex:- Textbox, Check Box, Picture Box, Image Control, Label, List box, Combo Box, DB Combo,

What methods are used for DBGrid in unbound mode?
AddData, EditData, Readdata, WriteData.

What is ADO? What are its objects ?
ActiveX Data Object. ADO can access data from both flat files as well as the databases. I.e., It is encapsulation of DAO, RDO, and OLE that is why we call it as OLE-DB Technology. Objects are Connection, Record Set, Command, Parameter, field, Error, Property.

What is the max size allowed for Max Text box length.

Record set types and Number available in VB?
1- Dynaset, 0 Table, 2 Snap Shot.

What is the max size allowed for Max Control Names length?

How many procedures are in VB?
function and sub procedures

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