Interface in c# .net

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please help me understanding the artical by giving me an suitable Example.

my dought is that .

1.Does we declare the interface method Virtual explicitly . example

2." If an interface method is sealed, a derived class cannot override the method. However, a derived class can re-inherit the same interface and can provide its own implementation for the interface’s methods. " what does it mean.

"The CLR requires that interface methods be marked as virtual. If you do not explicitly mark the method as virtual in your source code, the compiler marks the method as virtual and sealed; this prevents a derived class from overriding the interface method. If you explicitly mark the method as virtual, the compiler marks the method as virtual (and leaves it unsealed); this allows a derived class to override the interface method. If an interface method is sealed, a derived class cannot override the method. However, a derived class can re-inherit the same interface and can provide its own implementation for the interface’s methods."

pleas help me to make the clear understanding of the above paragraph i will be very thankful to you.

Posted 12-Jun-14 19:06pm

siddharth629

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Nayan Rudani · Answer 1 · 2014-06-12T19:11:00

Solution 1

try with:
Interfaces-in-C-For-Beginners[^]
interface-best-example-in-csharp[^]
csharp_interfaces[^]
how-to-implement-an-interface-explicitly-with-a-virtual-method[^]
explicit-interface-implementation-cannot-be-virtua[^]
why-implement-interface-explicitly[^]

Posted 12-Jun-14 19:11pm

Nayan Rudani

Updated 12-Jun-14 19:36pm

v3

Debabrata_Das · Answer 2 · 2014-06-12T19:12:00

Solution 2

Hello friend, please visit the following article to understand Interface in C#:
Interfaces in C# (For Beginners)[^]
Hope this will help you. :)
- DD

Posted 12-Jun-14 19:12pm

Debabrata_Das

Comments

siddharth629 13-Jun-14 3:07am

"If you explicitly mark the method as virtual, the compiler marks the method as virtual (and leaves it unsealed)"

what dosed it mean i want to know can we explicitly mark the methods as virtual.

siddharth629 13-Jun-14 3:07am

If an interface method is sealed, a derived class cannot override the method. However, a derived class can re-inherit the same interface and can provide its own implementation for the interface’s methods."

and what does it mean ...plz explain only these tow line