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

   [HttpPost("UploadSingleFile"), Route("[action]")]
    public async Task<IActionResult> UploadSingleFile([FromForm(Name = "file")] IFormFile file)
    {


        // Process uploaded files

        string folderName = "Uploads";
        string webRootPath = hostingEnvironment.WebRootPath;
        string newPath = Path.Combine(webRootPath, folderName);
        if (!Directory.Exists(newPath))
        {
            Directory.CreateDirectory(newPath);
        }

        Repository.Models.File fileModel = new Repository.Models.File();
        fileModel.Name = ContentDispositionHeaderValue.Parse(file.ContentDisposition).FileName.Trim('"');
        fileModel.Path = $"{folderName}/{file.FileName}";
        fileModel.Size = file.Length;
        fileModel.Type = file.ContentType;

        string fullPath = Path.Combine(newPath, fileModel.Name);

        fileModel.Extension = Path.GetExtension(fullPath);
        fileModel.CreatedDate = Utility.Common.GetDate;
        fileModel.CreatedBy = 1;

        //fileModel save to db

        using (var stream = new FileStream(fullPath, FileMode.Create))
        {
            //file.CopyTo(stream);
            await file.CopyToAsync(stream);
        }

        return Ok(new { count = 1, path = filePath });
    }