object Reference not set to an instance of an Object Error

hi,

generally this ocurred when you trying to access property of null object or trying to convert it to the other type.

for example
i have one class called A and has property name

A a =null;
now i am trying to access it property...

a.Name
it give me error......
this sis an example there is somany reason to this error.
please share your code so that we can help you.


hope this will help you.