Is contenttype case-sensitive?

ContentType controls the Web type output. Whether it is case-sensitive or not?

For example:

Context. Response.ContentType = "Application/json";

Context. Response.ContentType = "Application/json";

Is it the same?

The code that would have been executed completely without problems. Front Code:

$.ajax ({type: "POST",            Url:urlajax + "?) Operationtype=add ",            Data: $ (formId). Serialize (),            success:function (msg) {                var obj = Jquery.parsejson (msg );                if (obj. Issuccess = = True) {                    $.messager.alert (' hint ', obj. MSG, ' info ', saveokcallback);                }                else {                    $.messager.alert (' hint ', obj. MSG);                }                Enablebutton (True);            }        });

Background code:

Context. Response.ContentType = "Application/json";

When I change the backend code into

Context. Response.ContentType = "Application/json";

, the front desk directly error.! Is this sentence.!

Jquery.parsejson (msg)

No issuccess attribute!

！！

Finally found out the reason is actually a capital and lowercase problems caused by!!

It seems contenttype it is case-sensitive. But I did not find the relevant information!!

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Is contenttype case-sensitive?