Error with ToString has no method that takes one argument in C# [duplicate]

Error with ToString has no method that takes one argument in C# [duplicate]

References

Reference NO 1

http://stackoverflow.com/questions/13655410/error-with-tostring-has-no-method-that-takes-one-argument-in-c-sharp

Reference NO 2

http://stackoverflow.com/questions/886822/what-is-a-method-group-in-c

Reference NO 3

http://social.msdn.microsoft.com/Forums/vstudio/en-US/8fa7f853-c3dc-4db1-8810-3bc9b2a91c27/action?threadDisplayName=error-cs1501-no-overload-for-method-waitone-takes-1-arguments-

Reference NO 4

http://forums.devshed.com/net-development-87/c-how-to-get-around-no-overload-for-method-somemethod-518802.html

Reference NO 5

http://cboard.cprogramming.com/csharp-programming/143785-no-overload-method-takes-2-arguments-error.html

Reference NO 6

http://www.tutorialspoint.com/csharp/csharp_quick_guide.htm

Reference NO 7

http://en.wikibooks.org/wiki/C_Sharp_Programming/The_.NET_Framework/Console_Programming

Reference NO 8

http://www.codeproject.com/Articles/24255/Exploring-Lambda-Expression-in-C