How to solve “Input string was not in a correct format “ while use double.Parse

double.Parse(String1, CultureInfo.InvariantCulture);

 Reference

http://stackoverflow.com/questions/721950/double-parse-internationalization-problem

How to debug SQL Server Store procedure in ASP.NET?

1. Enable SQL Server debugger in Visual Studio: (project property->Web->Debuggers)
2. Open the store procedure in Visual Studio from Server Explorer
3. Set break point inside store procedure

ASP.NET MVC template

http://rachelappel.com/create-user-friendly-date-fields-with-asp.net-mvc-editortemplates-amp-jqueryui

How to open url in new tab using javascript not a page

No. You can't

Chat site by ASP.NET MVC

http://blogs.claritycon.com/blog/2011/04/12/roll-your-own-mvc-3-long-polling-chat-site/