what is the need of using interface in program ex:if we have a program like this interface1() { void method1(); void method(); } class a1 : interface1 { a1 b = new b(); b.method1(); b.method2(); } so without using interface also we can achieve this then wat is the need to use the interface? plz give me the answer

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What is generic method in c#?

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How long does it take to learn c# for unity?

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WHAT ARE Design Patterns USING IN DOTNET

3 Answers   HP,

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Suppose two interfaces have same method, so how will you implement these methods in derive class?

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may we achieve polyphormsm through overloading a funtion?Is it right or wrong concept because i read polyphormism can be achieved through overloading?plz help me thnks

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Give an example of a directcast.

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Does c# have primitives?

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What?s the advantage of using System.Text.StringBuilder over System.String?

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What's the c# syntax to catch any possible exception?

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What is the advantage of constructor?

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What is the state of Garbage Collection after dispose() call info C# code?

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