ASP Core WebApi Test File Upload using 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:

  [HttpPost("UploadSingleFile")]
  public async Task<IActionResult> Post(IFormFile file)
  {
  
      // Full path to file in temp location
      var filePath = Path.GetTempFileName();
  
      if (file.Length > 0)
          using (var stream = new FileStream(filePath, FileMode.Create))
              await file.CopyToAsync(stream);
  
      // Process uploaded files
  
      return Ok(new { count = 1, path = filePath});
  }
  

The postman picture shows how you can send a file to this endpoint for uploading single file:

Your should be like that

 [HttpPost]       
   public async Task<IActionResult> UploadFile([FromForm]UploadFile updateTenantRequest)
        {
}

Your class should be like:-

public class UpdateTenantRequestdto
    {


        public IFormFile TenantLogo { get; set; }
    }

and then

Thanks to @rmjoia's comment I got it working! Here is what I had to do in Postman: