Web services for current dollar rate, gold rate and silver rate on my application [closed]

It's diff开发者_JS百科icult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center. Closed 11 years ago.

Platform: .NET with C# Windows Application

I am looking for a API / Webservice(s) that could fetch me these things

1. The current dollar rate.
2. The current gold rate.
3. The current silver rate.