如何使用POST方法使用asp.net网页调用php api

i'm beginner ..i have a website whose code is written in php and i need to call that api.php using asp.net ..how can do it... It has post method which needs to communicate and encode and decode it in JSON and return value

in asp.net, you can call php api by using asp curl function or http method.

For example with this code in the server side:

[HttpPost]
public Boolean PostDataToDB(int n, string s)
{
    //validate and write to database
    return false;
}

You can use different approches:

With WebClient:

using (var wb = new WebClient())
{
    var data = new NameValueCollection();
    data["n"] = "42";
    data["s"] = "string value";

    var response = wb.UploadValues("http://www.domain.org/receiver.aspx", "POST", data);
}

With HttpRequest:

var request = (HttpWebRequest)WebRequest.Create("http://www.domain.org/receiver.aspx");

var postData = "n=42&s=string value";
var data = Encoding.ASCII.GetBytes(postData);

request.Method = "POST";
request.ContentType = "application/x-www-form-urlencoded";
request.ContentLength = data.Length;

using (var stream = request.GetRequestStream())
{
    stream.Write(data, 0, data.Length);
}

var response = (HttpWebResponse)request.GetResponse();
var responseString = new StreamReader(response.GetResponseStream()).ReadToEnd();

With HttpClient:

using (var client = new HttpClient())
{
    var values = new List<KeyValuePair<string, string>>();
    values.Add(new KeyValuePair<string, int>("n", "42"));
    values.Add(new KeyValuePair<string, string>("s", "string value"));

    var content = new FormUrlEncodedContent(values);

    var response = await client.PostAsync("http://www.domain.org/receiver.aspx", content);

    var responseString = await response.Content.ReadAsStringAsync();
}

With WebRequest

WebRequest request = WebRequest.Create ("http://www.domain.org/receiver.aspx");
request.Method = "POST";
string postData = "n=42&s=string value";
byte[] byteArray = Encoding.UTF8.GetBytes (postData);
request.ContentType = "application/x-www-form-urlencoded";
request.ContentLength = byteArray.Length;
Stream dataStream = request.GetRequestStream ();
dataStream.Write (byteArray, 0, byteArray.Length);
dataStream.Close ();

//Response
WebResponse response = request.GetResponse ();
Console.WriteLine (((HttpWebResponse)response).StatusDescription);
dataStream = response.GetResponseStream ();
StreamReader reader = new StreamReader (dataStream);
string responseFromServer = reader.ReadToEnd ();
Console.WriteLine (responseFromServer);
reader.Close ();
dataStream.Close ();
response.Close ();