how to call api in c# web application

Question

I have a api link http://igicert.vvssindia.com/certup and i want to call this api in c# cs page for file upload

Pankaj Patel · Answer

Hi Sandeep Kumar, You can "call api in c# web application" using HttpContext.Current.Request as like following: public class DocFileController : ApiController { public HttpResponseMessage Post() { HttpResponseMessage result = null ; var httpRequest = HttpContext.Current.Request; if (httpRequest.Files.Count > 0) { var docfiles = new List string >(); foreach ( string file in httpRequest.Files) { var postedFile = httpRequest.Files[file]; var filePath = HttpContext.Current.Server.MapPath( "~/" + postedFile.FileName); postedFile.SaveAs(filePath); docfiles.Add(filePath); } result = Request.CreateResponse(HttpStatusCode.Created, docfiles); } else { result = Request.CreateResponse(HttpStatusCode.BadRequest); } return result; } } For more detail you can refer below article: Uploading a File in ASP.Net Web API https://www.c-sharpcorner.com/UploadFile/2b481f/uploading-a-file-in-Asp-Net-web-api/ Hope, this will help you!

Sachin Singh · Answer

To call an external API, use HttpClient as using (var client = new HttpClient()) { client.BaseAddress = newUri( " http://igicert.vvssindia.com/ " ); client.DefaultRequestHeaders.Accept.Clear(); client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue( "application/json" )); //GET Method HttpResponseMessage response = await client.GetAsync( " certup " ); if (response.IsSuccessStatusCode) { var res= await response.Content. ReadAsStringAsync (); } else { Console.WriteLine( "Internal server Error" ); } }