Have a very seasoned org and doing impact analysis is sometimes hit or miss. Does anyone know of a tool (or can provide a code example for a .net application using the tooling API) that will analyze where a field is being used or referenced?  This would allow us to pinpoint where to look or where other changes need to be made. Thanks in advance. 

Hi, as everyone knows when to delete a custom field, salesforce check the referenced source, such as Visualforce page, Apex class.
For example, if you want to delete [custom__c] field in an object, a deleteredirect.jsp page will show a list  that [custom__c] field has been referenced by, so that you couldn't delete it.

My problem is, I want to get the Referenced by List of all the fields in my Schema, but to delete all the fields one by one Manually is not a good way.

So is there a good solution？
Any help would be much appreciated!

I wanted to check where some of the fields from a custom object are being referenced in either a Visualforce page or an apex class.Is there a way to check this?