cannot see headers

[edward]

Hello,

I hope this is the correct forum for my question.

 

I am learning to use Fiddler (for debugging API's issues) hence I could be asking a question which is very basic or non-sensical, in this case I apologise upfront.

I would like Fiddler to show the streams going to Shopify using their API's:- in this example I have a simple GET Customers coded in Microsoft Dotnet. The API works 100% and it returns the expected XML list of current Shopify Customers.

However, when I look at the Fiddler data, it does NOT show the Authentication Headers:- I was expecting to see my Shopify API Key and Password. 

Would anyone be able to explain why Fiddler states there isno Authorization Header where I used it in the API call?

Thanks