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What are the scopes of the class?
Public, private, Friend
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Can us able to set Instancing properties like Singleuse, GlobalSingleuse to ActiveXDll?
No.
Sandhya.Kishan
- Jul 30th, 2012
No we cannot set instancing properties like singleuse, GLobalsingleuse to activexdll.
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In project properties if we set Unattended what is it mean?
This cannot have user interface. This can be used for the COM creation.
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What are the Style Properties of Combo Box?
Simple, Dropdown list – We can type and select. Dropdown Combo – Only Drop Down.
Sandhya.Kishan
- Jul 12th, 2012
The Combo Box style property has two integer values.
Style property 0 - here the Combo Box behaves as a drop-down Combo Box.
Style property 2 - here the Combo Box behaves as a list box. -
What are the Style properties of List Box?
Simple –Single Select , Extended. – Multiple Select.
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What are the different types of Dialog Box?
Predefined, Custom, User Defined.
Sandhya.Kishan
- May 23rd, 2012
There are two kinds of dialog box namely simple and complex.
Simple dialog box includes information level and error level.
Complex dialog box includes model,modelless and movable levels.
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What is Parser Bug?
It is difficult to use database objects declared in a module from within a form.
Sandhya.Kishan
- May 25th, 2012
When a code is in the process of being translated by the compiler and there is an error in the coding such errors are called as parser bug.
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What is the Dll required for running the VB?
Vbrun300.dll
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Can We create CGI scripts in VB?
Yes.
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How to check the condition in Msgbox?
If(Msgbox("Do you want to delete this Record",VbYesNo)=VbYes)Then End if
vijai85m
- Mar 20th, 2009
Using the named values for msgbox type will yield a return value like JD stated.You can then use:If msgbox("yourmessage", sometype) = someNamedValue Thenetc etc__________________oh yeah... documentation... I have heard of that.
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What is difference between datagrid and flexgrid?
Datagrid – Editable. Flexigrid – Non-Editable. (Generally used for Read only purpose.)
Sandhya.Kishan
- Jul 12th, 2012
1. Full data binding is allowed in datagrid where as flexgrid supports read only binding. 2. Datagrid is large and do not allow merging cells where as flexgrid allows cell merging and it is smaller. 3...
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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.
Sandhya.Kishan
- Jul 12th, 2012
ADO stands for Activex Data Object. It is a programming interface to access data in the database and can also access data present in web pages, spreadsheets and other types of documents.
ADO has three objects namely command, connection and record set objects.
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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,
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What are two validate with Data Control?
Data_Validate, Data_Error.
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Record set types and Number available in VB?
3. 1- Dynaset, 0 – Table, 2 – Snap Shot.
Sandhya.Kishan
- May 31st, 2012
There are 5 recordset type available in VB
1.Table-Type Recordset -0
2.Dynaset-Type Recordset -1
3.Snapshot-Type Recordset -2
4.Dynamic-Type Recordset -2
5.Forward only type Recordset -0 -
What are the locks available in Visual Basic?
Locking is the process by which a DBMS restricts access to a row in a multi-user environment 4 types of locks. They are 1. Batch Optimistic 2. Optimistic 3. Pessimistic 4. ReadOnly Operations in a relational database act on a complete set of rows. The set of rows returned by a SELECT statement consists of all the rows that satisfy the conditions in the WHERE clause of the statement. This complete set...
Sandhya.Kishan
- May 31st, 2012
The locks avaliable in Vb are
1.RdConcurReadOnly 0 (Default)
2.RdConcurLock 1 (Pessimistic Locking)
3.RdConcurRowver 2 (Optimistic Lociking)
4.RdConcurValues 3
5.RdConcurBatch 4 -
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.
Sandhya.Kishan
- May 24th, 2012
RDO used RDO query to call stored procedure of a back end where as ADO uses command objects
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What are the Technologies for Accessing Database from Visual Basic?
DAO, Data Control, RDO, ODBCDIRECT, ADO, ODBC API , 0040.
Sandhya.Kishan
- May 21st, 2012
The technologies for accessing database from visual basic are
1.ADO
2.RDO
3.ODBC
4.ODBC control
5.Data control and
6.ODBC DIRECT -
What is MAPI ?
Messaging Application programming Interface.
Sandhya.Kishan
- May 21st, 2012
MAPI stands for Messaging Application Programming Interface,they provides a consistent interface for multiple application programs to interact with multiple messaging systems across a variety of hardware platforms.
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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.
Visual Basic Interview Questions
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