What is list array in c#?

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What is the advantage of singleton class?

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What is the difference between “out” and “ref” parameters in c#?

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Can abstract class have constructor in c#?

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Why do we need constructor in c#?

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What is difference between dll and exe in c#?

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Explain use of abstract and sealed classes in c#?

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Is c# int immutable?

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Can you store multiple data types in System.Array?

20 Answers   Satyam, Siebel Systems,

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Explain how do you convert a value-type to a reference-type?

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What is the Use Of Interfaces? For example I have a interface as shown below? Interface IMyInterface { public void MyMethod(); } class MyClass : IMyInterface { public void Mymethod() { Some Code } } class Program { static void Main(string[] args) { MyClass obj = new MyClass(); obj.MyMethod(); } } Here What is My Question is? If i remove Interface and run this code, it will executed then what is the Use of the interface? Can any one give me the solution for this Problem? Thanks in Advance!

1 Answers   HCL,

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How do I know if executenonquery is successful c#?

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