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The following code fails. Why?
int a = 5; int b = 5; object oa = a; object ob = b; Debug.Assert(oa == ob, "oa is not equal ob");
chidski
- Oct 17th, 2013
Given code fails bcoz. debug result is wrong.. Please see below int a = 5; int b = 5; object oa = a; object ob = b; Debug.Assert(oa != ob...
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Which is not cls compliant built in value type?
Intushortdecimalenum
Vikas Yadav
- Apr 2nd, 2008
sbyte(System.SByte)ushort(System.UInt16)uint(System.UInt32)ulong(System.UInt64)are non-cls compliant .
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Which of the following is not a member of System.Object?
a)Instance equalsb)Static Equalsc)Instance referenceequalsd)Instance Gettype
LordAlex
- Nov 5th, 2011
Instance equals - because Object has instance Equals
Instance referenceequals - because Object has static ReferenceEquals
Instance Gettype - because Object has instance GetType
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What is page life cycle in c#.net
kirangiet
- Jun 8th, 2010
Following are the events occur during ASP.NET Page Life Cycle:1) Page_PreInit2) Page_Init3) Page_InitComplete4) Page_PreLoad5) Page_Load6) Control Events7) Page_LoadComplete8) Page_PreRender9) SaveVie...
sd.rawat
- Dec 29th, 2009
There are 10 different stages and methods in page life cycle Stage - Method 1) Page Initialization - Page_Init 2) View State Loading - LoadViewState 3) PostBack data processing - LoadPostData 4) Page ...
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Postbackurl and Navigateurl
What is difference between "Session" and "Session" Objects? What is the use of "postbackurl" and "navigateurl" and the differences between those two things?
azita2005
- Apr 6th, 2010
With PostbackUrl you can perform the cross page posting and you can get information from the source page. It is working with Http Post command which sends the value of the source page to the target pa...
csharpkate
- Mar 9th, 2010
The PostBackUrl property allows you to perform a cross-page post using the button control. Postbackurl can be set so that the values like those on a form, can be passed onto another page. For example ...
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C# Serializable Keyword
What is the use of serializable keyword in C#?
kirangiet
- Jun 8th, 2010
We usually serialize the object, which we are transferring across processes.Example: When we are using Out Proc session Management we should add the serializable attribute at the top of the class.e.g.[Serializable]public Class Employee{public string Name;public int Age;}
azita2005
- Apr 6th, 2010
Serialization is the process of taking an object and convert it to a format that can be transmitted over the network or save in database or store in the file.Objects may be serialized in three fo...
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What is Encoding and Serialization in .Net?
ffiv77
- Feb 20th, 2012
Serialization is the process of converting an object into a stream of bytes in order to persist it to memory, a database, or a file. Its main purpose is to save the state of an object in order to be able to recreate it when needed. The reverse process is called deserialization.
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How many types of Inheritance is there in C#?
HI,
Can youplz tell me how many types of Inheritance is there in C#?
As per my knowledge these are following but i am not sure
-single level
-multi level
-Hierarchical inheritence
-Hybride inheritence.
there one more inheritence but its not suported by C# that is Multiple inheritence.
is it correct ?plz help me.
Kajul Nisha
- Jun 14th, 2019
As per my knowledge, C# supports the following inheritance
1. single
2.multi-level
and
it doesn't support multiple inheritance
but it can be achieved by interfacesPraveen Chandra
- Nov 1st, 2011
They are four types
1.Single Level
2.Multi Level
3.Hierarichal
4.Mutiple -
Second maximum number
how to find out second maximum number in C#?
Roger Hyde
- Feb 6th, 2016
Linq makes this quite simple
CodeVasyliy Zvarydchuk
- Oct 28th, 2015
This code will work even if array will have a few maximums. Ex: (10, 8, 8, -2, 4, 10, 1) "c# static int GetSecondMax(int[] array) { if(array.Length < 2...
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If a base class has a bunch of overloaded constructors, and an inherited class has another bunch of overloaded constructors, can you enforce a call from an inherited constructor to an arbitrary base constructor?
Yes, just place a colon, and then keyword base (parameter list to invoke the appropriate constructor) in the overloaded constructor definition inside the inherited class.
poovarasan
- Jan 20th, 2021
Use keyword base in the overloaded constructor definition inside the inherited class
chintan.desai
- Aug 7th, 2009
Just use keyword base(<<list of parameters>>) at the first line of code in respective derive class constructor.Example:Class A{ public A(string s) { } public A(int i, s...
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String is an
Skill/Topic: BeginnerA) object typeB) reference type
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The base class Arrray belongs to the mamespace
Skill/Topic: IntermediateA) GlobalTypeB) ArraysC) System
Rajesh.A
- Apr 2nd, 2007
using System.Array.Tostring()
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There can me more than 1 Main() functions in a C# program
Skill/Topic: IntermediateA) YesB) NoExplanation: While compiling we can specify which Main() function to start in
shyinsi
- Jan 19th, 2009
Yes , While Compiling we can specify which main to use by going to properties and setting the startup object.
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How do destructors and garbage collection work in C#?
C# has finalizers (similar to destructors except that the runtime doesn't guarantee they'll be called), and they are specified as follows: class C{~C(){// your code}public static void Main() {}}Currently, they override object.Finalize(), which is called during the GC process.
Sarika Macha
- Apr 30th, 2011
Destructors implicitly calls Finalize() method. It is advised not to used Destructors because when GC runs it pushes the object which has destructor in FinalizeQueue and clears the object from memory ...
pritam83
- Sep 21st, 2007
If you are not declare any Main() method in your program then compiler will give you this errors. Basically Main() is the entry point for compiler for execution. One more thing C# ia a case sensitive ...
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When do you absolutely have to declare a class as abstract ?
(as opposed to free-willed educated choice or decision based on UML diagram)? When at least one of the methods in the class is abstract. When the class itself is inherited from an abstract class, but not all base abstract methods have been over-ridden.
Devender Thadkapalli
- Nov 28th, 2011
When you do not want to create an object of the class and want to provide some abstract implementation
ex: Class HumanBeing. No Point of creating a class human being. You can create Men or Women out of it an create an object of the derived class -
You can create the following using C#
Skill/Topic: BeginnerA) class librariesB) Stand alone GUI (Windows Forms) applicationsC) ASP.NET Web pagesD) Command Line applications
nikhilrawat23
- May 29th, 2008
you can create all four type of application through c#.just go through add new project----than u will find there some option-1.windowapplication2.window control liberary3.crystal report application4.c...
madhavi
- Nov 14th, 2006
We can create all the four types of applicationYou can refer VS.Net2005 --> New Project --> U can find all the templates to create above mentioned applications
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What is Boxing?
Skill/Topic: AdvancedA) conversion of reference types to value typesB) conversion of value types to reference typesC) Encapsulating a base class
Ramesh
- Mar 21st, 2006
The Exact Result is Ans : Convertion of Value type to Reference type
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Following are the collections in C#:
Skill/Topic: AdvancedA) structsB) enumC) dictionariesExplanation: Ans. b & c. a isn�t a collection .
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Editorial / Best Answer
LordAlex- Member Since Nov-2011 | Nov 5th, 2011
All collections directly or indirectly should implement the ICollection interface or the ICollection(Of T) generic interface. If you check System.Array you will see ICollection interface in there. Correct answer is C, it doesn't matter that there are methods that can provide arrays of Names and Values. Because if you are reasoning like this, it means bject.ToString().ToCharArray() cause all classes are being collections.
LordAlex
- Nov 5th, 2011
All collections directly or indirectly should implement the ICollection interface or the ICollection(Of T) generic interface. If you check System.Array you will see ICollection interface in there. Co...
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X=X+1 is equivalent to
A) X++B) X+=1C) Both A & B
samiksc
- Jul 11th, 2007
X=x+1 is equivalent to x+=1 except that value of x is evaluated only once.x=x+1 is not equal to x++ (not always equal as mentioned in one of the earlier comments). If x++ is a standalone statement, the two have equal effect.
dotnetrocks
- Jun 21st, 2006
Performance wise both the approaches are similiar. BUt consider this statement. suppose some object obj has a variable in it as i. then, obj.1 = obj.i + 1In this case at the MSIL level u can see 2 dif...
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What happens when you create an arraylist as ArrayList Arr=new ArrayList()
A) An arraylist of object Arr is created with the capacity of 16B) An arraylist of object Arr is created with the capacity of 20C) An arraylist of object Arr is created with the capacity of 26Explanation: Default capacity is 16 if size is not specified
Darain
- Mar 19th, 2009
In .Net v1, default initial capacity of ArrayList is 16.In .Net v2, default initial capacity of ArrayList lowered to 4.In .Net v3.5, default initial capacity of ArrayList lowered to 0.Now, when ...
nitin
- Nov 16th, 2006
A is the correct answer!!
C# Interview Questions
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