C# WEB-API and how to post xml as List

Question

My C# web api:

[HttpPost]
[Route("freeworks")]
public IHttpActionResult Post([FromBody]List<AgadoFreeWork> value)
{

and I try to test POST as XML

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<AgadoFreeWork>
    <IsPublished>true</IsPublished>
    ....

but I am getting back

{
Message: "The request is invalid."
ModelState: {
value: [1]
0:  "Error in line 1 position 23. Expecting element 'ArrayOfAgadoFreeWork' from namespace 'http://schemas.datacontract.org/2004/07/Agado.Restful.Classes'.. Encountered 'Element' with name 'ArrayOfAgadoFreeWork', namespace ''. "
-
}-
}

Answer 1

You are sending an object of type "AgadoFreeWork" in your example, but your endpoint expects a list holding items of this type. As well I would define an array of type "AgadoFreeWork" for this endpoint, there is probably no need to use a List. Have a look at this post Posting array of objects with MVC Web API

Answer 2

You are missing namespace in the POST XML that you are sending. Add the namespace to your XML and it should work.

Like below:

 <?xml version="1.0" encoding="UTF-8"?>
        <ArrayOfAgadoFreeWork xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"    xmlns:xsd="http://www.w3.org/2001/XMLSchema">

Also, you should be sending an array of AgadoFreeWork. Some thing like,

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<ArrayOfAgadoFreeWork xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"    xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <AgadoFreeWork>
      <IsPublished>true</IsPublished>
  </AgadoFreeWork>
</ArrayOfAgadoFreeWork>

If you don't want to send namespaces with the XML that you are sending, refer here