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Visual Basic Interview Questions and Answers
What is Inprocess and Out of Process?
Inprocess It will run with in the memory. ( Local
Machine). Out of Process It will run out of the memory
Normally in the server side.
Where will we give the option explicit keyword and for
what?
In the general declarations section. To trap undeclared
variables.
How can we call Stored procedure of Back End in RDO and
ADO ?
In RDO We can call using RDO Query Objects.
In ADO We can call using Command Objects.
What is Static Cursor?
In ADO Snap Shot is called so.
How to check the condition in Msgbox?
If(Msgbox("Do you want to delete this Record",VbYesNo)=VbYes)Then
End if
What is control array and how many we can have it with
in the form?
Group of control share the same name. Max 32, 767.
What is diff between the Generic Variable and Specific
Variable?
Generic Variable:
Create Object Ex:-Ole-Automation . No need refer the
object library.
Specific Variable:
Binding Procedure Early and Late Binding ( Can be Remove
from the Memory).
What is the diff. Between function and sub procedures?
Function will return value but a sub procedure wont
return values
What is the max size allowed for Extension in Visual
Basic?
Frm, bas, cls, res, vbx, ocx, frx, vbp, exe
What is FireHouse Cursors?
Forward Only Some time Updateable
With in the form we want to check all the text box
control are typed or not? How?
For each currentcontrol in controls
if typeof currentcontrol is TextBox then
end if
next
What are the type of validation available in VB?
Field, Form
How to trap Data Base Error?
Dim x as RDOError
X(0).Des
X(1).Number
Setting the Cursors.
Default Cursor 0
ODBC Cursor (Client side) 1
ServerSide Cursors (More Network traffic) - 2
How to declare Dll Procedure?
Declare function "" lib ""
Alias "" (Arg, ..) as Return type.
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