I use ASP .NET and Facebook Connect APIs. but when I run the app and press Connect button it's return to the Website not to the test local server which is (http://localhost:xxxx/test.aspx) So how I can test Facebook locally (i.e How I can change the callback url) ?
Answer
It's simple enough when you find out.
Open /etc/hosts (unix) or C:\WINDOWS\system32\drivers\etc\hosts.
If your domain is foo.com, then add this line:
127.0.0.1 local.foo.com
When you are testing, open local.foo.com in your browser and it should work.