What is .net
.Net is the Development Platform which provides advanced feature facilities for the web and window application along with the window services . The .Net is the Middle layer between the operating System and the .Net application .The feature of .Net that the .Net Component can talk with each other without worrying about the language in which they are originally.. Two main components are CLR stands for the common Language Runtime and the .Net FrameWork Base classes. The CLR performs the task of converting the IL to native code Which gives the .Net applications to be language Independent . The Other component Like .Net FramwWork Base Classes act as services to be provided to the .Net applications.
Differences between VB.Net and C#, related to OOPS concepts?
VB.NET is a windows application
Where as C# is a console
1)What is the difference between vb and vb.net ?
vb is object based and vb.net is object oriented.In VB.net ,oops concept is used
How can i extract the formated word(bold,italic,underline,font,color etc) from the msword file.
using CommonDialog class
eg:
the code to invoke the default font dialog box by using the FontDialog control is given below:
private sub displayfont_click(byval sender as system.object,byval e as system.eventargs) handles displayfont.click
fontdialog.showDialog()
textbox1.font=fontdialog1.font
end sub
the code to invoke the default font dialog box by instantiating the fontdialog class is:
dim fdialog as new fontdialog()
private sub displayfont_click(byval sender as system.object,byval e as system.eventargs) handles displayfont.click
fdialog.showDialog()
textbox1.font=fontdialog1.font
end sub
How does CLR solves dll hell?
Unlike VB6; .net does not require to generate GUID for the dll’s. The dll’s are hosted thru applications ,IIS or windows services. These things internally refer to the physical locations of the file thus even if the dll is updated with certain functionalities the older application can still refer to the previous version of the Dll.
How to send xml file on server using HTTP protocol?
Through SOAP Protocol
What is different between Web.Config and Machine.Config and Where it will be ?
the settings made in the web.config file are applied to that particular web application only whereas the settings of machine.config file are applied to the whole asp.net application.
Whats the difference bt. .dll extension and .exe extension files?
The main difference between .dll and .exe is
.dll is the In process component where it take up the client’s memory space to run. So the communication between the application and component(dll) is very fast.
.EXE is the Out of process component. It uses its own memory(not application memory) to run the component. The communication between the application and component is slow when compared to .dll
What is the base class of .net?
System.Object is the base class of .NET
It Supports all classes in the .NET Framework class hierarchy and provides low-level services to derived classes. This is the ultimate superclass of all classes in the .NET Framework; it is the root of the type hierarchy.
How to store and retrieve images in sql server database through VB.NET
SQL Server supports the ability for clients to store objects within tables
What are Jagged Arrarys ?
The other type of multidimensional array is the jagged array. A two dimensional jagged array can be thought of as a table where each row can have a different number of columns. Take for example, a table where families are the rows and family members are the columns. Unless each family has the same number of members, each row will have a variable number of columns. You can use a jagged array to represent such a table.
A jagged array is really an array of arrays. To create a jagged array, you declare the array of arrays with multiple sets of parentheses or brackets and indicate the size of the jagged array in the first set of brackets (parentheses).
How can we remove Handlers at Run time ?
RemoveHandler myobj.myEvent, AddressOf MyEventHandler
What are Satellite Assemblies?
Satellite assemblies are user for localizing the applications resources.
A satellite assembly is a DLL that contains only resource strings
.we typically have one satellite assembly DLL for each language. Because these satellite assembly DLLs are separated from the main assembly (an .exe or DLL), it is easier to drop in multi-language support as we progress in your development process.
What do you mean by ‘Option Strict On’ ?
Option Strict
Visual Basic language in general does not require explicit syntax to be used when performing operations that might not be optimally efficient (e.g. late binding) or that might fail at run time (e.g. narrowing conversions). This permissive semantics often prevents detection of coding errors and also affects the performance of the application.
VB.NET enables a programmer to enforce strict semantics by setting this option to “On”. When used, this option should appear before any other code. This option can be set to “On” or “Off”. If this statement is not specified, by default, it is set to “Off”.
Syntax: Option Strict [On / Off]
When it is set to “On”, it disallows any narrowing conversions to occur without an explicit cast operator, late binding and does not let the programmer omit “As” clause in the declaration statement. Since setting it to “On” requires explicit conversion, it also requires that the compiler be able to determine the type of each variable. Thus it is implied that Option Strict also means Option Explicit.
Visual Basic .NET allows implicit conversions of any data type to any other data type. However, data loss can occur if the value of one data type is converted to a data type with less precision or a smaller capacity. Setting this option to “On” ensures compile-time notification of these types of conversions so they may be avoided.
How VB Implements the Disonnected Architecture as like VB.Net?
In VB to implement a disconnected recordset, after you have filled the recordset with the data, set its active connection property to “Nothing”. That breaks the connection to the database.You can locally also save the data of the recordset by using its Save function.