Single instantiation of Class

[i gr8]

I am having a requirement in which i have to create a object of class for only one time in my project . if next time developers try to create a new object for that class it should show error

[Dan Mos]

Sounds like Singleton to me. Have a look Here. Also Google or Bing could help a lot.

[PIEBALDconsult]

See here.[^] But be warned that the Singleton Pattern is generally overused; be sure you really need it before you waste time doing it. I have never needed a Singleton.