Visual Basic

1. What is user control?
2. What is activex? Why it is required in visual basic?What is interface in visual basic? Explain its types in visual basic? And their usage
   
3. Difference between OCX , DLL and EXE ?
4. What is overloading and overriding? Explain diff between them.
5. What is modal and modeless? explain
6. What is compatibility?
7. How to create instance of an object in visual basic? Explain
8. How will you handle error in visual basic application? Explain
9. Explain Diff between array and collection object
10. What is instead of trigger? Explain
    
11. How will you get OCX file added to your project?
    
12. What is typedef? Explain
13. For getting more values from a function which parameter should we use, out or inout ?
14. What is adUseClient and adUseServer? Where it is going to affect in runtime?
15. How to write SQL query in Database environment, the query is parameterized eg: select * from account where accno=x x: has to be taken from an Input box
16. How many child forms can MDI have?
17. What is the difference between Listview and Treeview?
18. What are the three methods in IUnknown interface and their use?
19. What is the purpose of Visual source safe in visual basic?
20. How to Open Outlook Explorer in VISUAL BASIC Code How to change the font color of few times in the list box control while loading in VISUAL BASIC6
21. State 3 main differences between flex grid control and dbgrid control ?
22. Differences between Dnaset& Snapshot?
    
23. What is MTS?
    
24. Define ADO define ActiveX ?
25. How many objects resides in ADO ?
26. What is OLEDB?
27. Clear property is available to which control ?
28. What is RdExecDirect?DSN less Connection?
29. What is DBFailError?
30. How to set a shortcut key for label?
31. Advantages of disconnected record set?
32. Which property of menu cannot be set at run time?
33. How can you Add API functions to your Application?
34. What keyword is associated with raising system level events in VISUAL BASIC?What are the types of Error?
35. What are the different compatibility types when we create a COM component?
36. How can you check Beginning and End of the file?
37. What is ODBC?To set the command button for ESC, Which property needs to be changed?
38. ___ VISUAL BASIC constant make the menu item in centre.
39. ___, ___ arguments will be used to run a executable program in shell function
40. _____ Collection in record set used to assign a value from textbox to table columns without making a binding in data control.
41. ____ Property of menu cannot be set at run time.
42. ____ is the difference between List index and Tab index.
43. ____ Property is used to lock a textbox to enter a data’s.To find the current record position in data control ?
44. _____ is the property to ___,____,___ _ are valid for record source property of data. control.