JQuery Plugins and FormView in ASP.net 4.0

JQuery Plugins and FormView in ASP.net 4.0

I have implemented JQuery plugin my application which is having FormView. I have also added JQuery Validation method successfully which will check duplicate Company Name at the time of Insert mode. 

Now situation is like JQuery plugin can work at time of Insertion mode Perfectly. It will check duplicate addition of Company Name. But When FormView is in ReadOnly Mode and when I click on that Add New Button to make my FormView in Insert Mode than it will Check again for duplicate validation it should not be. So First question how can I exclude some button to validate form. I need to validate in Insert mode only.

Now Next another situation when I make my form In Edit mode than Company Name which already there it is checking for duplicate company name which It should not validate. Now It may happen end user may change company name in edit mode to other company name which is already in the database, So what I need to check if the company name is change than only it should validate form otherwise it should not validate company name for duplicate. How it can be happen.