ASP Core WebApi Test File Upload Using Postman
Answer : Thanks to @rmjoia's comment I got it working! Here is what I had to do in Postman: The complete solution for uploading file or files is shown below: This action use for uploading multiple files : // Of course this action exist in microsoft docs and you can read it. HttpPost("UploadMultipleFiles")] public async Task<IActionResult> Post(List<IFormFile> files) { long size = files.Sum(f => f.Length); // Full path to file in temp location var filePath = Path.GetTempFileName(); foreach (var formFile in files) { if (formFile.Length > 0) using (var stream = new FileStream(filePath, FileMode.Create)) await formFile.CopyToAsync(stream); } // Process uploaded files return Ok(new { count = files.Count, path = filePath}); } The postman picture shows how you can send files to this endpoint for uploading multiple files: This action use for uploading single file : [Http...