This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
In an effort to help everyone get the most from our forums, we've compiled a list of tips for asking questions here. You can find the list in our FAQ section here. In particular please see: UseAMeaningfulSubjectLine
"Please explain this" tells us nothing about your question. Many people won't even bother clicking on a thread with such a non-descriptive subject line.