private async void PostRequestByHWR(object sender, EventArgs e) { string url = "http://192.168.1.102:8077/User/PostThing"; IDictionary <string, string> routeParames = new Dictionary <string, string>(); routeParames.Add("str", this.txtInput.Text); var result = await EasyWebRequest.SendPostHttpRequestBaseOnHttpWebRequest(url, routeParames); var data = (JsonObject)result; this.tv.Text = "hey," + data["Val"] + ", i am from httpwebrequest post"; }