如何将数组从HttpClient发布到Web api控制器？

Question

Inside a web api controller I have the following method:

[HttpPost]
public ProcessResultDto Process(int[] IDs)
{
}

I cannot change that signature or dll or anything.

I have to make an executable that calls that method.

Here's roughly what I have so far:

int[] ids = //...
using (var client = new HttpClient())
{
    var content = // I don't know what goes here.
    var result = cli.PostAsync("/api/Processor/Process", content).Result;
    string resultContent = result.Content.ReadAsStringAsync().Result;
    // Substring(6) because of leading )]}',\n
    var summary = JsonConvert.DeserializeObject<ProcessResultDto>(resultContent.Substring(6));
    return summary;
}

What do I set content to so that I can pass an array of int's to my web api controller

Answer 1

You could do the following:

int[] ids = new[] {1,2,3,4};
var content = JsonConvert.SerializeObject(new {
   IDs = ids
});

This will create an anonymous object with a property of IDs and convert it to json. The json will look like:

{
    IDs: [1,2,3,4]
}

The web API method will then bind that to your model.

Answer 2

I use ServiceStack 's JSON serializer/deserializer as they're the current .Net performance champ. From the ServiceStack docs

Any List, Queue, Stack, Array, Collection, Enumerables including custom enumerable types are stored in exactly the same way as a JavaScript array literal

Therefore

int[] ids = [1,2,3,4];
var content = TypeSerializer.SerializeToString(new {IDs=ids});