What is a Component in Visual basic If you compile an ActiveX dll, it becomes a component.If you compile an ActiveX Control, it becomes both a component and a control. Component is a general term used to describe code that’s grouped by functionality. More specifically, a component in COM terms is a compiled collection of read more »

What is meant by “Early Binding” and “Late Binding”? Which is better?Early binding and late binding refer to the method used to bind an interface’s properties and methods to an object reference (variable). Early binding uses type library information at design time to reference procedures, while late binding handles this at run time. Late bindinghandles read more »

Explain single thread and multithread thread apartmentsAll components created with Visual Basic use the apartment model, whether they’re single-threaded or multithreaded. A single-threaded component has only one apartment, which contains all the objects the component provides. This means that a single-threaded DLL created with Visual Basic is safe to use with a multithreaded client. However, read more »

What is difference between inprocess and out of process An in-process component is implemented as a DLL, and runs in the same process space as its client app, enabling the most efficient communication between client and component.Each client app that uses the component starts a new instance of it. An out of process component is read more »

Advantage of ActiveX Dll over Active ExeACTIVEX DLL:An in-process component, or ActiveX DLL, runs in another application’s process. In-process components are used by applications or other in-process components. this allows you to wrap up common functionality (like an ActiveX Exe). ACTIVEX EXE:An out-of-process component, or ActiveX EXE, runs in its own address space. The client read more »

ActiveX and Types of ActiveX Components in VBStandard EXEActiveX EXEActiveX DLLActiveX documentActiveX Control

What are the RDO Methods and EventsMethods EventsBegin Trans ValidateCommit Trans RepositionRollback Trans ErrorCancel Query CompliedRefreshUpdate ControlsUpdate rowWhat is Static Cursor?In ADO Snap Shot is called so.

What are the three main differences between flexgrid control and dbgrid(Data bound Grid) controlThe Microsoft FlexGrid (MSFlexGrid) control displays and operates on tabular data. It allows complete flexibility to sort, merge, and format tables containing strings and pictures. When bound to a Data control, MSFlexGrid displays read-only data.Adaptation to existing Visual Basic code for the read more »

What is the max size allowed for Msgbox Prompt and Input Box in VBWhat is the max size allowed for Msgbox Prompt and Input Box?1024 Max label caption length. –2,048 Max Text box length –32,000 Max Control Names length –255. Extension in Visual BasicFrm, bas, cls, res, vbx, ocx, frx, vbp, exe

Diff types of Lock TypesRdConcurReadOnly 0 (Default)RdConcurLock 1 (Pessimistic Locking)RdConcurRowver 2 (Optimistic Lociking)RdConcurValues 3RdConcurBatch 4