c#httpclient post json code example

Example 1: c# httpclient post json stringcontent

private static async Task PostBasicAsync(object content, CancellationToken cancellationToken)
{
    using (var client = new HttpClient())
    using (var request = new HttpRequestMessage(HttpMethod.Post, Url))
    {
        var json = JsonConvert.SerializeObject(content);
        using (var stringContent = new StringContent(json, Encoding.UTF8, "application/json"))
        {
            request.Content = stringContent;

            using (var response = await client
                .SendAsync(request, HttpCompletionOption.ResponseHeadersRead, cancellationToken)
                .ConfigureAwait(false))
            {
                response.EnsureSuccessStatusCode();
            }
        }
    }
}

Example 2: c# .net 3.5 post json httpclient

System.Net.WebClient client = new System.Net.WebClient();
 client.Headers.Add("content-type", "application/json");//set your header here, you can add multiple headers
 string s = Encoding.ASCII.GetString(client.UploadData("http://localhost:1111/Service.svc/SignIn", "POST", Encoding.Default.GetBytes("{\"EmailId\": \"[email protected]\",\"Password\": \"pass#123\"}")));