Getting Header Values in WebApi 2 Controller

Question

What is the correct way to access a header value in a WebApi2 controller? I have method that looks like this:

    [Route(Name ="Stuff")]
    public SysDataTablePager Get(string sEcho, int iDisplayStart)

It returns paged json data to a jquery DataTable.

I am trying to this to get the search value.

var nameFilter = Convert.ToString(Request["sSearch_1"]);

But I am getting this error:

Cannot apply indexing with [] to an expression of type 'System.Net.Http.HttpRequestMessage'

Answer 1

Try this

IEnumerable<string> headerValues;
var nameFilter= string.Empty;
if (Request.Headers.TryGetValues("sSearch_1", out headerValues))
{
    nameFilter = headerValues.FirstOrDefault();
}

Answer 2

Using ASP.Net Core Web Application (.Net Core) for a web api project.

Try this

//check the header
StringValues headerValues;
var nameFilter = string.Empty;
if (Request.Headers.TryGetValue("X-Custom-Token", out headerValues)) {
  //validate the token
  nameFilter = headerValues.FirstOrDefault();
}