-
What is an abstract class?
A class that cannot be instantiated. A concept in C++ known as pure virtual method. A class that must be inherited and have the methods over-ridden. Essentially, it is a blueprint for a class without any implementation.
-
How can you overload a method?
Different parameter data types, different number of parameters, different order of parameters.
learnasp
- Oct 11th, 2007
A method can be overloaded by having different parameters as in different type of parameters and well different number of parameters.Also, if the parameter types are different than you can also have d...
sahu
- Dec 12th, 2005
Ans:Different parameter data types, different number of parameters, different order of parameters
-
Can you store multiple data types in System.Array?
No.
-
What is the difference between the System.Array.CopyTo() and System.Array.Clone()?
The first one performs a deep copy of the array, the second one is shallow.
dotnetasit
- Feb 21st, 2008
I felt the need of this posting because I have seen postings (not only in this forum but also in many others) saying that "CopyTo() makes a deep copy and Clone() makes a shallow copy." ...
-
Can multiple catch blocks be executed?
No, once the proper catch code fires off, the control is transferred to the finally block (if there are any), and then whatever follows the finally block.
samiksc
- Jan 9th, 2006
No: only one catch block will be executed for an exception. We can write several catch blocks below a try block. When an exception generates all these catch blocks will be scanned sequentially for a m...
yazhini
- Dec 14th, 2005
No.Multiple catch blocks will not be executed. But, we can use multiple catch blocks for a try block.The respective catch block will get executed according to the error arises.
-
What is the difference between // comments, /* */ comments and /// comments?
Single-line, multi-line and XML documentation comments.
ushalakshmi
- May 7th, 2008
// Is for Single-Line Comments./* */ Is for Multi-Line Comments./// For XML Documentation Comments
sahu
- Dec 14th, 2005
Ans:// for single comments/* */ for multiple cmments/// for XML documentation comments.
-
What is the difference between the Debug class and Trace class?
Documentation looks the same. Use Debug class for debug builds, use Trace class for both debug and release builds.
vaibhav Tyagi
- Oct 2nd, 2007
the Debug and the Trace classes are available in the Microsoft .NET Framework. You can use these classes to provide information about the performance of an application either during applicatio...
-
What is the role of the DataReader class in ADO.NET connections?
It returns a read-only dataset from the data source when the command is executed.
Rahul Prashant Singh
- Oct 14th, 2007
DataReader Class represents a read-only and forward-only stream of data.An instance of this class is used to hold the data returned by executing the Select statement in the DBCommand object using Executereader() method of the DBCommand Class.
swag
- Dec 24th, 2005
When the command is executed it provides a read-only farward-only dataset from the datsource which requires a connection to be open.
-
How do you inherit from a class in C#?
Place a colon and then the name of the base class. Notice that it's double colon in C++.
nitin
- Dec 11th, 2006
Lets us say there are 2 claases ,Class A and ClassB.ClassA -BaseClass,ClassB-derived class ClassA{}ClassB:ClassA(baseclass){}here we can say ClassB is derived from classA.Hope this is right.
sahu
- Dec 10th, 2005
Ans:Placing Colon(:)Let's exampleclass x{//code}class y:x(here drive class placing colon){//code}
-
Are private class-level variables inherited?
-
What is CTS?
Skill/Topic: BeginnerA) Common Translation systemB) Csharp Type SystemC) Common Type SystemD) Constants Translation Specification
-
ASP.NET web pages can be programmed in C#?
Skill/Topic: BeginnerA) YesB) No
-
Every statement in C# must end in
Skill/Topic: BeginnerA) ;B) ,C) #
sudhakar
- Oct 8th, 2006
A);
-
To write a line of text to the xonsole window, we make the following call
Skill/Topic: BeginnerA) Console.WriteLine()B) console.writeline()C) System.Output()
-
All the variables local to a method in C# must be initialized before they can be used
Skill/Topic: BeginnerA) TrueB) False
-
Which of the following is the correct way to instantiate an object in C#:
Skill/Topic: BeginnerA) objThis = System.CreateObject( ThisObject);B) objThis = new ThisObject();
Naveen kumar
- Mar 3rd, 2017
B)objThis=new ThisObject();
-
A class type in C# is a value type
Skill/Topic: BeginnerA) YesB) NoExplanation: It is a reference type
-
Which of the following are predefined reference types in C#?
Skill/Topic: BeginnerA) intB) objectC) string
sdevlin555
- Jul 27th, 2009
The pre-defined reference types are object and string, where object is the ultimate base class of all other types.
samiksc
- Dec 7th, 2005
(B) and (C): 'object' and 'string' are predefined reference types. 'string' is a sealed class type which inherits directly from object.
-
All types in C# implicitly derive from
Skill/Topic: BeginnerA) System.Object classB) System classC) System.CSharp class
Anujan
- Nov 6th, 2011
From the System.Object class is correct, all value types derive from System.Value Type which in-turn derives from System.Object.
-
What is similar in concept to IL?
Skill/Topic: IntermediateA) Java Byte CodeB) C++ LibrariesC) Machine Language
C# Interview Questions
Ans