Dear Eslam Afifi, Thanks a lot for your detailed answer.

Dear Eslam Afifi, Thanks a lot for your explanation.You have explained the difference between lazy and eager evalation.I could find lot of explanation on the same topic in text books and in the internet.However my question is how we can implement eager evalation for deferred execution or how you example for the exger evaluation employs Deferred execution.Could you please provied any example for that? Moreover,how deferred execution differs from lazy evaluation?In my point of view,both are looking same.Could you please provide any example for this too? Thanks in Advance...!

Hi Could you please give me an example for Deferred execution with eager evaluation in C#? I read from MSDN that deferred execution in LINQ can be implemented either with lazy or eager evaluation...i could find examples in the internet for Deferred execution with lazy evaluation ,however i could not find any example for Deferred execution with eager evaluation....please help me....its urgent...