How to query Elasticsearch from C# via HTTP?

Question

I am trying to write code in C# for PUT and GET to my elasticsearch data. I typed code for PUT like this, and it seems that it works:

string url = "http://localhost:9200/my_index/my_type/";

JsonDocFormat json = new JsonDocFormat()
{
   name = "John"
};

string s = JsonConvert.SerializeObject(json);

using (var client = new WebClient())
{
   client.UploadString(url, "POST", s);
}

But I can't write code for this GET:

GET my_index/my_type/_search
{
   "query" : {
       "match" : {
            "name" : "john"
        }
    }
}

I tried something like this:

string url_req = "http://localhost:9200/my_index/my_type/_search?pretty";

string s1 = "{\"query\": {\"match\": { \"name\" : \"john\" }}}";

string s_req = url_req + s1;

using (var client = new WebClient())
{
    Console.Write(client.DownloadString(s_req));
}

But this code returned same output as for this GET:

GET /my_index/my_type/_search

It did not throw any error, but it absolutely ignored json body at the end of URL. I want to write this without any external package (as NEST or Elasticsearch.NET), just with HTTP.

Thanks in advance for any help!

Answer 1

Final solution for my question is in this code

string url_req = "http://localhost:9200/my_index/my_type/_search?pretty";

string s = "{\"query\": {\"match\": { \"name\" : \"john\" }}}";

using (var client = new WebClient())
{
    Console.Write(client.UploadString(url_req, "POST", s));
}