c# - WebApi binding a single parameter from body (form-urlencoded) -

i understand why in case when there 1 parameter in post body, content type url-formencoded syntax different in case of multiple parameters.

let's assume we've got these 2 methods matching route templates:

public string postsinglestring([frombody]string value) {     return value; }  public class values {     public string value1 {get; set;}     public string value2 {get; set;} }  public string postmultiplestrings(values values) {     return string.format("{0}-{1}", values.value1, values.value2); } 

in first case request be:

post    [controller]/ body: =myvalue 

in second 1 though:

post    [controller]/ body: value1=one&value2=two 

if in first case syntax second example used (value=myvalue) param won't bind (unless string wrapped in complex type).

can explain why case?