Upload File using RestClient as multipart/form-data in c#
12,727
I found the solution by just changing the few codes.
Updated Code :
var request = new RestRequest("api/document", Method.POST);
request.AddFile(Path.GetFileNameWithoutExtension(fullFileName), filepath);
request.AddParameter("ReferenceType", ReferenceType.ToString());
request.AddParameter("RefId", StudioEventEntryId.ToString());
request.AlwaysMultipartFormData = true;
IRestResponse response = client.Execute(request);
Author by
Ankit Patel
Updated on June 07, 2022Comments
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Ankit Patel almost 2 years
I am trying to upload files from the c# class using restClient (RestSharp) request. I am creating Method.POST method and add one Audio file to this request As multipart/form-data.
Server throws an exception when I execute the request.
Exception :
System.ArgumentNullException: Value cannot be null. Parameter name: value at System.Enum.TryParseEnum(Type enumType, String value, Boolean ignoreCase, EnumResult& parseResult) at System.Enum.Parse(Type enumType, String value, Boolean ignoreCase) at Groove.Libraries.Helper.EnumHelper.ParseEnum[T](String value) in D:\project\Groove\Web\Groove\Libraries\Helper\EnumHelper.cs:line 47 at Groove.Controllers.Api.DocumentController. <PostDocumentUpload>d__5.MoveNext()
RestClient Request Code :
string api_url = "http://localhost:57997/"; var fullFileName = "Adios.mp3"; var filepath = @"C:\Users\Admin\Desktop\Adios.mp3"; RestClient client = new RestClient(ApiModel.api_url); var request = new RestRequest("api/document", Method.POST); request.AddFile(Path.GetFileNameWithoutExtension(fullFileName), filepath); request.AddHeader("Content-Type", "multipart/form-data"); request.AddParameter("ReferenceType",28,ParameterType.RequestBody); IRestResponse response = client.Execute(request);
Server Code :
public async Task<object> PostDocumentUpload() { try { // Make temp physical path where file to be saved var tempPath = HttpContext.Current.Server.MapPath(string.Format("{0}/{1}", Constants.MediaResourceFolder, Constants.MediaResorceTempFolder)); // Check temporary path is exist or not, if not then create temporary folder if (!Directory.Exists(tempPath)) { Directory.CreateDirectory(tempPath); } // Create object of MyMultipartFormDataStreamProvider class var stream = new MultipartHelper(tempPath); // Save file at temp path await RequestContext.Request.Content.ReadAsMultipartAsync(stream); // Exception throw from Here, ReferenceType referenceType = EnumHelper.ParseEnum<ReferenceType>(stream.FormData["ReferenceType"]); // -------------other code } catch (Exception ex) { return FailureResponse(ex); }
I guess problem is that stream.FormData["ReferenceType"] is not set correctly from request.
I don't want change the server code. because it working fine when you call from postman or browser.
Can somebody pls help? Thanks