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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# 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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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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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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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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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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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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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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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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Variable Declaration and Assignment
What is difference between these two statement? if variable is declared and assign value in following two waysString sValue = (String)GridView1.DataKeys[GridView1.SelectedIndex].Value;String sValue = GridView1.DataKeys[GridView1.SelectedIndex].Value.ToString();
gispadhu
- Aug 19th, 2010
The first statement can handle null values whereas the second statement throws an exception.
hdkhanna
- May 18th, 2010
First statement:String sValue = (String)GridView1.DataKeys[GridView1.SelectedIndex].Value;The above statement uses type casting (explicit) to convert the value to string. Second statement:String sValu...
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What does the keyword virtual mean in the method definition?
The method can be over-ridden.
smandke
- Aug 27th, 2010
Virtual method in C# is a used to support polymorphism. This means that in a base class we will define a method foo1() with the keyword "virtual" and the derived classes will inherit t...
sahajanandk
- Mar 9th, 2009
Keyword virtual is used to make changes to the methods inside the virtual class while runtime. the virtual class should be overide with the same modifier, return type and the name.
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C# Program to test efficient coding
You have several instances of the following class (User). Provide a class with three methods:"AddUser" accepts a User instance as a parameter and add it to a collection."GetUser" accepts a UserID as a parameter and returns the corresponding User instance. It is important that this executes quickly as it will be used often."GetOrderedUserArray" returns an array of User instances ordered by UserID....
jankajg
- Sep 25th, 2010
@asaf122 - your method can be improved a bit by using list. Find even better by lambda expressions) here is howclass UserManager{private List list; internal List List{get { return list; }set { list va...
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Output of int sqrt(volatile int *ptr){ return (*ptr**ptr);}
garanaveen
- Sep 25th, 2010
This question is an interview question which is asked to test the possible problems with the code if any.This function is supposed to calculate the square of the number pointed by ptr.As it is volatil...
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Where are custom exceptions derived from?
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Value Types are stored on the heap ..? Is it true/False ?
Skill/Topic: AdvancedA) TrueB) False
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Singleton Class
Give an example of inbuilt Singleton Class in .NET.
BhavinRudani
- Dec 23rd, 2010
The Singleton is class which only allows a single instance of itself to be created and usually gives access to the instace.Benifits:Instance ControlSingleton class prevents other object from instantia...
sushil_gupta
- Oct 8th, 2010
In Singleton class we can create only one object throughout the lifetime of class.Singleton is a design pattern and based on that pattern this class is implemented.
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What is the advantage of using system.text.string builder over system.string?
jaguarjj
- Mar 22nd, 2011
System.text.string builder is mutable and can be changed and modified whereas string is immutable once it's created it cannot be modified but rather replaced and altered by a new one
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What is the nature of staticmembers of the class?
jaguarjj
- Mar 22nd, 2011
Static members of the class aren't instantiated upon creating any object of this class because static members are defined for all objects within the same class (i.e. when you create a class called ban...
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Whitespace in XML Parser
When whitespace is encountered by an XML parser within the element content, how is it handled by the XML parser?
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ByteArray Class
Write a class called ByteArray that implement allocating, reading and writing to an array of bytes. The runtime environment has a limitation. The maximum continuous memory size that it can allocated is 64k bytes. It can allocate many 64K ( or less) chunks. The ByteArray class should hide this limitation and support allocating arrays larger than 64K as in the following example :ByteArray ba = new ByteArray...
C# Interview Questions
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