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Handling Error in Calling chain. This will call the top most error where the error is handled.
Sandhya.Kishan
- Jun 18th, 2012
Handling error in calling chain is used to handle the error when we call the top most error.
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How to trap Data Base Error?
Dim x as RDOError X(0).Des X(1).Number
Sandhya.Kishan
- Jun 18th, 2012
To trap database error we can use PowerBuilder which has a built-in event to capture database errors: it is the DBERROR event in the datawindow.
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What is the difference between Msgbox Statement and MsgboxQ function?
Sandhya.Kishan
- Jun 21st, 2012
Msgbox statement is used to display messages where as a Msgboxq function display a message and return a value when any button in the MsgBox is pressed.
MsgBox is a built in VB function which is used as a statement and MsgBoxQ is a function defined by the user.
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What types of data access have you used.?
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How to add recovery scenario's to Test Settings through script
Sandhya.Kishan
- Jun 21st, 2012
By using "Recovery.GetScenarioName Iter, ScenarioFile, ScenarioName" statement we can add recovery scenarios to test settings.
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How can you tell what kind of object an object variable is holding?
Sandhya.Kishan
- Jun 21st, 2012
We declare an object variable to hold the object.For example, a word processing application may provide an Application object, a Document object, and a Toolbar object.
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What are the tools available for Debuggiu in VB?
Sandhya.Kishan
- Jun 21st, 2012
The tools available for debugging in vb
1.Immediate Window
2.Debug.Print
3.Debug.Assert
4.Break Points
5.single step mode -
Kind of components can be used as DCOM servers?
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What is the max size allowed for Extension in Visual Basic
Frm, bas, cls, res, vbx, ocx, frx, vbp, exe
Sandhya.Kishan
- Jun 27th, 2012
The extension allowed in vb are vbx, ocx, frx, vbp,Frm, bas, cls and res.
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Drag and Drop state numbers and functions?
State 0 – Source control is being dragged with the range of a target. 1 – Out of the range of a target. 2 – One position in the target to another.
Sandhya.Kishan
- Jun 27th, 2012
There are 3 states numbers drag and drop functions
State 0 source control is being dragged with the range of a target.
State 1 out of the range of a target.
State 2 one position in the target to another -
Suppose from form1 to form2 object property settings will arise to ?
Invalid procedure call or argument (Run time error – 5)
Sandhya.Kishan
- Jun 27th, 2012
Form1 to form2 object property settings will arise to run time error or to an invalid argument.
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What are the scopes of the class?
Public, private, Friend
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How to increase the Date corresponding with month,date,year?
DateSerial(year(Now),Month(Now)+1,1) Hour, min, sec, month, year, DateSerial, dateadd, datediff, weekday, datevalue, timeserial,timevalue.
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What is Static Variable?
Its Scope will be available through out the life time.
Sandhya.Kishan
- Jun 27th, 2012
Static variables are classes variables not instance variables.The lifetime extends across the entire run of the program.These variables are instantiated only once for a class. These variables have a s...
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How to convert a form that contain some chart and some textbox to PDF in Visual Basic ?
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How would you attach an ActiveX control in Your Application?
Sandhya.Kishan
- Jul 12th, 2012
We can attach an activex control using
BOOL Attach(
BSTR PortName // name of the virtual serial port
);
Here PortName is the name of the existing virtual serial port to be opened.
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Is it possible to call backend procedures with ADO control?
Sandhya.Kishan
- Jul 12th, 2012
If the backend procedures are stored procedures then it is possible to call those procedures with ADO control.
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ActiveX Component
What project option causes the necessary files to be generated when the project is compiled?
Sandhya.Kishan
- Jul 12th, 2012
Gcc -c proc.adb is an option to generate the necessary files during compilation.
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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 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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