vk.api to download the image on the user wall c#

[Raziyah00]

Hello. I have a problem with downloading the image on the user wall. At first, I thought I was wrong to send the POST request, but the problem is, I don't get the URI server where to download the images. Here's the code.

WebRequest webRequest =    WebRequest.Create("https://api.vk.com/method/photos.getWallUploadServer?user_id="+userId+"&access_token="+token);
WebResponse webResponse = webRequest.GetResponse();
Stream stream = webResponse.GetResponseStream ();
//тут я получаю URI             
stream.Write(arr, 1 , arr.Length);
string jsonR = Encoding.UTF8.GetString(arr);
var jso = (JObject)JsonConvert.DeserializeObject(jsonR);
string url = jso["response"]["upload_url"].ToString();
//POST запрос
var  myWebClient = new WebClient();  
byte[] responseArray = myWebClient.UploadFile(url, filePath);
string jsonResponse = Encoding.UTF8.GetString(responseArray);
var json = (JObject)JsonConvert.DeserializeObject(jsonResponse);
string photo = json["response"]["photo"].ToString();
string server = json["response"]["server"].ToString();
string hash = json["response"]["hash"].ToString();
//загрузка изображения
WebRequest.Create("https://api.vk.com/method/photos.saveWallPhoto.xml?aceess_token="+ token+"&server="+server+"&photo="+photo+"&hash="+hash);
xmlDocument.Load (stream);
string photoLoad = xmlDocument.SelectSingleNode("responce/id").InnerText;
string URI = "https://api.vk.com/method/wall.post.xml?";
URI +="access_token="+ token;
URI += "&owner_id="+userId;
URI += "&attachments=photo"+userId+"_"+photoLoad;
URI += ",note"+userId+"_"+stext;
URI += "&message="+stext;
WebRequest.Create(URI); 

[emmalee]

Method for loading photos and commenting on the wall:

using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
// ...
static string Upload(string userid, string token, string imagePath, string text) {
    var c = new WebClient();
    //
    var u = "https://api.vk.com/method/photos.getWallUploadServer?user_id=" + userid 
            + "&access_token=" + token;
    var r = c.DownloadString(u);
    var j = JsonConvert.DeserializeObject(r) as JObject;
    //
    var u2 = j["response"]["upload_url"].ToString();
    var r2 = Encoding.UTF8.GetString(c.UploadFile(u2, "POST", imagePath));
    var j2 = JsonConvert.DeserializeObject(r2) as JObject;
    //
    var u3 = "https://api.vk.com/method/photos.saveWallPhoto?access_token=" + token
             + "&server=" + j2["server"]
             + "&photo=" + j2["photo"]
             + "&hash=" + j2["hash"];
    var r3 = c.DownloadString(u3);
    var j3 = JsonConvert.DeserializeObject(r3) as JObject;
    // 
    var u4 = "https://api.vk.com/method/wall.post?access_token=" + token
             + "&owner_id" + j3["response"][0]["owner_id"]
             + "&message=" + text
             + "&attachments=" + j3["response"][0]["id"];
    return c.DownloadString(u4);
}

To compile the code, the assembly should be connected. Newtonsoft.Json.dll
A access_token to be received for https://vk.com/dev/permissions ♪