“VB .Net Interview Questions and Answers guide to get preparation of VB .Net Jobs Interview or Learn the basic and advance concepts of VB .NET Programming by our VB .Net Interview Questions and Answers Guide.”
dispose(): should release all the resources that it owns.
close():closing the application
exit():Exiting from the loop
end():stops the execution of the page/function/procedure
With the help of xcopy we solve the problem of DLL HELL and com dependencies and when we make xcopy of project all the dll, dependencies, assembly are updated automaticaly it's a powerful feature of .NET
Data set can store many tables but a data table can have one table only.
Delegates are used as pointer to hold the controls actually i used the delegates when there is problem in VB.Net 2005 where each control is already threaded, to use my personla thread on these control i used delegates
Ex:
Private Delegate Sub dd()
Dim d1 As New dd(AddressOf c1)
Dim t1 As New Threading.Thread(AddressOf thread1)
public sub Thread1()
r1 =
Me.Label1.BeginInvoke(d1)
Me.Label1.EndInvoke(r1)
end sub
Public Sub c1()
Me.Label1.Text = ct1
Me.Label1.Refresh()
End Sub
Default size when a class gets loaded in memory is 8 bytes.
Just configure the report data source by database
Here are 5 objects in asp.net
1.Response:This object is to response to other e.g.:
2.Request:This object is request from server
3.Application: This object is store global information of application.
4.Session:This object used store the values into variable.
5.Server:
Console is used only for web application
Select id from table1 where sub1=(select min(sub1)from table1)and sub2=(select min(sub2)from table1)
Click on solution explorer window right click and add to add new item. The window will be displaced select
the crystal reports we have save in any name but extension is used .rpt eg:sss.rpt
Server side code executes on the server.For this to occur page has to be submitted or posted back.Events fired by the controls are executed on the server.Client side code executes in the browser of the client without submitting the page.
e.g. In ASP.NET for webcontrols like asp:button the click event of the button is executed on the server hence the event handler for the same in a part of the code-behind (server-side code). Along the server-side code events one can also attach client side events which are executed in the clients browser i.e. javascript events.
When we set out to implement a class using inheritance, we must first start with an existing class from which we will derive our new subclass. This existing class, or base class, may be part of the .NET system class library framework, it may be part of some other application or .NET assembly, or we may create it as part of our existing application. Once we have a base class, we can then implement one or more subclasses based on that base class. Each of our subclasses will automatically have all of the methods, properties, and events of that base class ? including the implementation behind each method, property, and event. Our subclass can add new methods, properties, and events of its own - extending the original interface with new functionality. Additionally, a subclass can replace the methods and properties of the base class with its own new
implementation - effectively overriding the original behavior and replacing it with new behaviors. Essentially inheritance is a way of merging functionality from an existing class into our new subclass. Inheritance also defines rules for how these methods, properties, and events can be merged. In VB.NET we can use implements keyword for inheritance, while in C# we can use the sign ( :: ) between subclass and baseclass.
An XML fragment is an XML document with no single top-level root element. To put it simple it is a part (fragment) of a well-formed xml document. (node) Where as a well-formed xml document must have only one root element.
"The purpose of Canonical XML is to define a standard format for an XML document. Canonical XML is a very strict XML syntax, which lets documents in canonical XML be compared directly.
Using this strict syntax makes it easier to see whether two XML documents are the same. For example, a section of text in one document might read Black & White, whereas the same section of text might read Black & White in another document, and even in another. If you compare those three documents byte by byte, they'll be different. But if you write them all in canonical XML, which specifies every aspect of the syntax you can use, these three documents would all have the same version of this text (which would be Black & White) and could be compared without problem.
This Comparison is especially critical when xml documents are digitally signed. The digital signal may be interpreted in different way and the document may be rejected.
"The XML Information Set (Infoset) defines a data model for XML. The Infoset describes the abstract representation of an XML Document. Infoset is the generalized representation of the XML Document, which is primarily meant to act as a set of definitions used by XML technologies to formally describe What parts of an XML document they operate upon.
The Document Object Model (DOM) is one technology for representing an XML Document in memory and to programmatically read, modify and manipulate a xml document.
Infoset helps defining generalized standards on how to use XML that is not dependent or tied to a particular XML specification or API. The Infoset tells us What part of XML Document should be considered as significant information.
The readonly keyword is different from the const keyword. A const field can only be initialized at the declaration of the field. A readonly field can be initialized either at the declaration or in a constructor. Therefore, readonly fields can have different values depending on the constructor used. Also, while a const field is a compile-time constant, the readonly field can be used for runtime constants as in the following example:
public static readonly uint l1 = (uint) DateTime.Now.Ticks;
Yes.
No fall-throughs allowed.
The code for the rest of the loop is ignored, the control is transferred back to the beginning of the loop.
By calling Sort() and then Reverse() methods.
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