Visual Basic (VB) Interview Questions & Answers
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Sharpen your Visual Basic (VB) interview expertise with our handpicked 102 questions. These questions are specifically selected to challenge and enhance your knowledge in Visual Basic (VB). Perfect for all proficiency levels, they are key to your interview success. Don't miss out on our free PDF download, containing all 102 questions to help you succeed in your Visual Basic (VB) interview. It's an invaluable tool for reinforcing your knowledge and building confidence.

102 Visual Basic (VB) Questions and Answers:

Visual Basic (VB) Job Interview Questions Table of Contents:

Visual Basic (VB) Job Interview Questions and Answers

1 :: Hi, sorry but i have a simple question ! i have a string like "2^5+25^2-1" in a textbox and i want to have the result of this string in another textbox. but i cant get the answer!
i am new and i want to have a function like :
f(x) = x^5+2x^2-1 and then i can calculate f(i) for example for i = 0 to 100
please help?

I believe that in VB6, there is no facility to calculate maths formula from string. So you need to create a function or your own logic to implement such a calculation.
Here is the code for above question. You can call that function with passing your number.
Function Calc(ByVal intNumber As Integer) As Double
Dim dblResult As Double
dblResult = (intNumber ^ 5) + (2 * (intNumber ^ 2)) - 1
Calc = dblResult
End Function
I hope it helps.

2 :: DSN Less Connection in VB?

"Server=Oracle; Driver={Microsoft ODBC for Oracle};"

3 :: Calling Stored Procedures in VB?

1. Calling Simply the Procedure with out Arguments "Call ProcedureName}"
2. If it is with Arguments Means then
Declare the Query Def qy
Set Qy as New Query def
Qy.SQL = "{Call ProcedureName(?

4 :: What is the max size allowed for Msgbox Prompt and Input Box?

1024

5 :: what will be the result for 15/4 and 154 ?

15/4 = 3.75 and 154 = 3

6 :: What is the max size allowed for Max label caption length?

2,048

7 :: How many procedures are in VB?

2.
function and sub procedures

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

255

9 :: Record set types and Number available in VB?

3.
1- Dynaset, 0 Table, 2 Snap Shot.

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

32,000

11 :: 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.

12 :: What methods are used for DBGrid in unbound mode?

AddData,
EditData,
Readdata,
WriteData.

13 :: 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,

14 :: 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