what is polymorphism and advantage ?
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How can i create only one instance of class and thus doesn't allow creating any more instances?
Explain the use of virtual, sealed, override, and abstract.
What is the difference between an application and a program?
What is static Constructor?
Explain hard disk and what is its purpose? : Dot net architecture
Define a virtual memory? : Dot net architecture
what are login controls?
what is Difference beetween Array and Hash Table.?
What is boxing and unboxing? Does it occure automaatically or you need to write code to box and unbox?
How to delete the duplicate records from table(having bulk records)?
What is the purpose of cache? How is it used? : Dot net architecture
how to change the application name?