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I am using below code in web api .net core to get the request body content and it is working fine for JSON input ie., Content type - "application/json"

[HttpPost]
public void Post([FromBody] dynamic messages)
{}

But when I pass xml in request body ie., Content Type - "application/xml", exception was thrown 'Invalid Operation'. Is there any way we can get the request body content dynamically for XML input?

What I have tried:

Referred the below link
tps://www.hanselman.com/blog/TinyHappyFeatures2ASPNETWebAPIInVisualStudio2012.aspx


Quote:

Scott,

Do you know of anyway that a dynamic parameter will work for a request that contains XML?

For example:

POST http://localhost:52753/api/Test HTTP/1.1
User-Agent: Fiddler
Host: localhost:52753
Accept: application/xml
Content-Type: application/xml; charset=utf-8

<root>
<message>Hello


and have this bind into:

public dynamic Post([FromBody]dynamic xml)
{
return xml;
}

--------------------
Andy Cohen

Thursday, January 10, 2013 6:11:52 PM UTC

Andy - No, but this isn't a WebAPI issue. I don't think there are any XML parsers on .NET that use Dynamic. If there were, you could write a model binder quickly.
Posted
Updated 25-Jun-18 10:00am
v3
Comments
David_Wimbley 25-Jun-18 23:33pm
   
You labeled .net core so I'm not sure if this is same fix, but this worked in web api for me in .net 4.6

GlobalConfiguration.Configuration.Formatters.XmlFormatter.UseXmlSerializer = true;


You put that into your Global.asx within the Application_Start() method. Again, not sure if it is applicable in .net core as Im not as familiar with that but this is what i had to do to get xml to work.

Also to note, when doing this, I didn't need to use dynamic i just used the class name in the Controller action method signature. Ex: public IHttActionResult MyMethod([FromBody] MyxmlClass value)

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