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YIELD Keyword
What is the purpose of YIELD Keyword in C#?
diejmon
- Aug 18th, 2010
The yield keyword is used in an iterator block to provide a value to the enumerator object or to signal the end of the iteration. When used the expression is evaluated and returned as a value to the e...
phanish
- Jul 17th, 2010
Used in an iterator block to provide a value to the enumerator object or to signal the end of iteration. It takes one of the following forms: yield return ;yield break;
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What is the difference between const and static read-only?
The difference is that static read-only can be modified by the containing class, but const can never be modified and must be initialized to a compile time constant. To expand on the static read-only case a bit, the containing class can only modify it:-- in the variable declaration (through a variable initializer).-- in the static constructor (instance constructors if it's not static).
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Editorial / Best Answer
Answered by: Eddie Quiroz
- Sep 3rd, 2005
A const must be initialized at the time of its creation. A readonly field can be assigned to once in the class constructor allowing you to pass in the value at run-time. Declaring fields as const protects both you and other programmers from accidentally changing the value of the field. Also note that with const fields, the compiler performs some optimization by not declaring any stack space for the field. The readonly keyword is similar to const, with two exceptions. First, the storage of a readonly field is the same as a regular read-write field, and thus there is no performance benefit. Secondly, readonly fields can be initialized in the constructor of the containing class.
md.shahidkamal
- Aug 16th, 2010
The Constant Fields are those which cannot be changed in runtime. Its value has to be assigned at declaration time. const string strMyString="Constant Data" ; //This is valid.Once declared now the val...
chandra_123
- Apr 7th, 2009
As static read-only variables must be initialized in the static constructor (static constructor cannot have parameters and it cannot be called manually), it is efficient to used const variables over static read-only variables if you know the values at creation of these variables.
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What is managed code?
Skill/Topic: IntermediateA) Code managed ouside the ILB) Code which can't be managed by the ILC) Code written in VB.NETD) Code to be compiled by IL
levteck
- Aug 16th, 2010
C) Code written in VB.NET is managed code.??If it was written in Java it would be considered unmanaged.? If it is not compilable into IL to run on CLR than it is unmananged code.
vidyajnath
- Jul 5th, 2010
Code that targets the Common Language Runtime, the foundation of the .NET Framework, is known as Managed Code; Code that does not target the Common Language Runtime is known as Unmanaged Code.
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Is there a way to force garbage collection?
Yes. Set all references to null and then call System.GC.Collect().If you need to have some objects destructed, and System.GC.Collect() doesn't seem to be doing it for you, you can force finalizers to be run by setting all the references to the object to null and then calling System.GC.RunFinalizers().
mrodenhauser
- Jul 29th, 2010
As others have mentioned forcing garbage collection is ill advised and really should not be necessary with proper implementations of IDisposable. One could probably argue that in .net ...
Sivakrishna
- Nov 12th, 2007
GC.Collect();It is recomended that you should not forcefully call the GC. GC does it in the optimal way, since it knows the inner details like which object actually created inner objects.But some case...
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Where does the version dependencies recorded
A) Inside an assembly’s manifestB) Along with the project propertiesC) Both
Biswa Prakash Rath
- Feb 28th, 2006
Answer: A) Inside an assembly?s manifest
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Windows Service
What is Windows Service? Can we develop Windows Service using C#? If Yes, How? How to install or start Windows Service?
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JScript Use
What is the use of JScript? How to get value of input tag? How to change inner value of div tag from JavaScript.
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C# Error - Overload for method
I took a button in form.I have two classes emp and bonus.bonus class is inherited from emp class.If bonus is giving ie in dialog box if we select ‘Yes’ b ie bonus is added to sal and we get ts ie total sal along with eno.If bonus is not given ie in dialog box if we select ‘No’ we need to get only sal along with eno.The following pgm is working fine.class emp { private int...
bhanu supriya
- Jul 19th, 2010
Here you are passing parameters to the class itself...You have to pass the parameters to method.
sudhakarr.net
- Jul 11th, 2008
Hi aarruunnaa,You try this code, if it is useful for you send me reply otherwise ask me again dont hesitate class emp {public int eno,sal; public emp(){}public emp(int eno,int sal) {this.eno=eno;...
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Declare Two or More Methods
How to declare two or more methods in C# program..How to implement that methods in the C# program
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C# Static Objects
How to create static objects in C#?
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Unsafe Keyword
Why we use pointer in C#.NET with Unsafe keyword?
phanish
- Jul 16th, 2010
In C# the value can be directly referenced to a variable, so there is no need of pointer. Use of pointer sometime crashes the application. But C# supports pointer, that means we can use pointer in C#....
kvvsmbalaji
- Jul 16th, 2010
As we know, the CLR is responsible for managing the execution of code compiled for the .NET platform. The code that satisfies the CLR at runtime in order to execute is reffered as Managed Code.Un...
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Data grid
How dotnet works in the background when we fetch data from data base to the grid on the form?
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Can you prevent your class from being inherited and becoming a base class for some other classes?
Yes, that is what keyword sealed in the class definition is for. The developer trying to derive from your class will get a message: cannot inherit from Sealed class WhateverBaseClassName. It is the same concept as final class in Java.
sabir
- Jan 6th, 2006
Can be done by using the keyword "not inhertitable "syntax is not inheritable class '''''''''''''''codeend class
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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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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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Assembly version information is stored in the:
Skill/Topic: AdvancedA) ManifestB) Garbage CollectorC) Heap
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Which of the following is wrong with regards to Out keyword
A) For Out parameters a variable can be passed which has not initializedB) If Out parameters are not assigned a value with in the function body compiler throws errorC) The variable passed as a Out parameter must be static
Sanjida123
- Jun 4th, 2010
Let's see what is out? Out is a keyword used to fill value to the parameter named as out.A) For Out parameters a variable can be passed which has not initialized - TrueWe can pass an uninitializ...
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If we need to compare X to a value 3 how do we do it in C#
A) If (X==3)B) If (X=3)C) If (X.equals(3) )
Aby Kurian
- Jan 29th, 2007
If x is an integer then
if (x==3){your code}
if x is string the convert value to integer then apply this code -
Which keyword is used of specify a class that cannot inherit by other class
Sanjida123
- Jun 4th, 2010
Sealed is the keyword that says the specific class cannot be inherited by another class.
nagarjuna
- Jul 5th, 2006
By using "sealed" keyword we can restrict a class from inheritence. Please reply me if it is wrong!
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What is ref parameter?What is Out parameter?What's the difference between these two?
Kuldeep Shishodia
- May 25th, 2010
Ref parameter are basically use to pass the variable as a reference to a function.OUT Parameter are used to send back the result to a calling function.
Sachin
- Aug 6th, 2007
Oops...The difference is that for a ref parameter, you have to assign a value before you call the function, while for OUT parameter, you dont have to assign a value, the calling function assumes that the called function would assign some value.
C# Interview Questions
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