C Sharp

1. An Overview of C# 2. OOP 3. C# Environment 4. IDE 5. Basic Requirement 6. Comments 7. My first program 8. Line Break 9. Escape Sequence 10. Identifiers 11. Variables 12. Datatypes 13. Range of datatypes in C# 14. Declare Variables 15. Reserved Key Words 16. Console.Write() 17. Chained & Embedded state 18. Prog.to print sum of 2 nos 19. Console.ReadLine() 20. Prg.to print sum & average 21. Area & Perimeter of Rectangle 22. Area Circumference of Circle 23. Prg.for Simple Calculator 24. Operatos in C# 25. Ex. Of Operators 26. Prg. to Swap two numbers 27. Hierarchy of Operators 28. if( ) statement 29. Prg.to check +ve,-ve or zero 30. if..else statement 31. Prg.to check Odd or Even 32. Prg.to print larger of 2 nos 33. Prg.to print largest of 3 nos 34. Prg.to check divisibility 35. Prg.to check print range 36. for. . . loop statement 37. prg.to print series of nos 38. Prg.to check divisibility 39. prg.to print sum of series 40. Prg.to print Pyramid 41. prg.for Factorial 42. prg.to fill screen 43. prg.for largest/smallest no 44. prg.to print reverse no 45. prg.to add each digit 46. prg.for sum of Factorial 47. prg.for fibonacci series 48. prg.to check Prime nos 49. prg. Prime no from 1 to 100 50. prg.Specified Prime nos 51. while( ) statement 52. do. . While statement 53. goto statement 54. break & continue statement 55. switch case statement 56. Array in C# 57. print reverse order using array 58. Ascending/Descending order 59. prg.to search no in Array 60. Multidimensional arrays 61. String in C# 62. String with spaces 63. prg.to print string in reverse 64. prg.to count A,E,I,O,U vowel 65. User Define Methods 66. Methods program example 67. General Purpose Programs 68. Loan & EMI calculation prg. 69. Table print prg. 70. Leap year program 71. lower to UPPER case prg. 72. Age Distribution prg. 73. Bank note calculation prg. 74. Simple Interest prg. 75. Compound Interest prg. 76. Simple Depreciation prg. 77. Reducing bal.Depreciation prg. 78. Marksheet prg. 79. Income Tax prg. 80. Time calculator prg. 81. Distance converter prg. 82. Volume Air Calculation prg. 83. Time to fill Water Tank prg. 84. Salary Calculation prg. 85. Total Sale Calculation prg. 86. Male/Female pecentage prg. 87. Library Rent prg. 88. Office Expance prg. 89. Total Salary Calculation prg. 90. Profit or Loss prg. 91. Total Profit/Loss prg. 92. Virtual Function . 93. C# Interview Part1 94. C# Interview Part2 95. C# Interview Part3 96. C# Interview Part4 97. C# Interview Part5 98. C# Interview Part6 99. C# Interview Part7 100. C# Interview Part8 101. C# Interview Part9 102. C# Interview Part10 103. C# Interview Part11 104. C# Interview Part12 105. C# Interview Part13 106. C# Interview Part14 107. C# Interview Part15
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C# Interview Questions and Answers Part 13


121. What are Custom Exceptions?

  • Sometimes there are some errors that need to be handeled as per user requirements.

  • Custom exceptions are used for them and are used defined exceptions.



122. How do you inherit a class into other class in C#?

  • Colon is used as inheritance operator in C#. Just place a colon and then the class name.


public class DerivedClass : BaseClass



123. What are the ways to deploy an assembly?

  • An MSI installer, a CAB archive, and XCOPY command.


124. What is serialization?

  • When we want to transport an object through network then we have to convert the object into a stream of bytes. The process of converting an object into a stream of bytes is called Serialization.

  • For an object to be serializable, it should inherit ISerialize Interface.

  • De-serialization is the reverse process of creating an object from a stream of bytes.


125. What is a delegate?

  • A delegate object encapsulates a reference to a method. In C++ they were referred to as function pointers.


126. What is the difference between an interface and abstract class?

  • In the interface all methods must be abstract; in the abstract class some methods can be concrete. In the interface no accessibility modifiers are allowed, which is ok in abstract classes.


127. 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.


128.Does C# support multiple-inheritance?

  • No.


129. What is the use of using statement in C#?

  • The using block is used to obtain a resource and use it and then automatically dispose of when the execution of block completed.



130. What is difference between constants and read-only?

  • Constant variables are declared and initialized at compile time. The value canít be changed after wards.

  • Read-only variables will be initialized only from the Static constructor of the class. Read only is used only when we want to assign the value at run time.

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