What is difference between singleton and static class in c#?
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What are the commonly used i/o classes?
Can you override private virtual methods?
Explain the difference between user control and custom control. Also, explain their use.
What is datacontract in c#?
write code for Factorial?
What are the various components in crystal reports?
Is there an equivalent to the instanceof operator in visual j++?
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
What is class and object c#?
What is single dimensional array in c#?
why we can't create an object for a static class?? what is the reason behind this?
how to add datarow to datatable