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How to do a cross domain json request with jquery and asp.net mvc web api

So – I was trying to request some data from one server from another – not normally a big deal, but the data would vary depending on whether or not the user was logged in or not.  I thought just setting up CORS would work (I’m using asp.net mvc web api 2).  I thought a simple jquery .post or .get would do the job, but surprisingly the .get and .post do not send the auth cookie when making the request – you have to use the .ajax features of jQuery, as well as enabling the “SupportsCredentials” part of Cors – the relevant parts look like this

In your web api controller

[EnableCors(origins: “*”, headers: “*”, methods: “*”,  SupportsCredentials = true)]

Your javascript code should look like this

$.ajax({
url: ‘http://MyWebServiceDomain.com/api/v.1.1/SomeController/MyFeature’,
dataType: ‘json’,
xhrFields: {
withCredentials: true
},
crossDomain: true,
success: function (authText) {
$(‘#authText’).html(authText);
}
});


19
Jan 17


Written By Steve French

 

How to fix 404 errors in asp.net web api 2

So – you’ve tried everything and you’re still getting weird 404 errors in asp.net web api 2.    You’ve tried the 4 main ways of fixing it, and you still get nothing – that was what I did anyway.  Finally I started a new project in the solution, and noticed that the problem only occured when other projects were referenced – and that I had several duplicate controller names.

I.E. Project A had and “AjaxController” and Project B had an “AjaxController”.  Everything works fine until you reference Project A from Project B – if you change the name of the controller in Project B the problem goes away and everything works perfectly.


26
Sep 16


Written By Steve French

 




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