I'm trying to upload the picked file from the react native app using expo-image-picker, but at the backend side I can't see anything.
At the start I used this solution, but the IFormFile was null there.
[HttpPost]
    public IActionResult Upload([FromBody] ReqFile reqFile)
    {
        try
        {
            using (var ms = new MemoryStream())
            {
                reqFile.file.CopyTo(ms);
                var fileBytes = ms.ToArray();
                fileBytes = _fileService.AsJpeg(fileBytes);
                fileBytes = _fileService.Resize(fileBytes, 500);
                fileBytes = _fileService.Compress(fileBytes);
                var fileGuid = _fileService.Upload(fileBytes, reqFile.file.ContentType);
                return Ok(fileGuid.ToString());
            }
        }
        catch (Exception ex)
        {
            return BadRequest();
        }
    }
Where the DTO is
public class ReqFile {
    public IFormFile file {get; set;}
}
And image picker function is
export const getImageUUID = async (imagePickerResult) => {
// ImagePicker saves the taken photo to disk and returns a local URI to it
let localUri = imagePickerResult.uri;
let filename = localUri.split("/").pop();
// Infer the type of the image
let match = /\.(\w+)$/.exec(filename);
let type = match ? `image/${match[1]}` : `image`;
let formData = new FormData();
const d = {
  uri: localUri,           
  name: filename,
  type: type
}
formData.append("file", d);
return await axios.post(FILE_URI,formData,
  {
    headers: {
      'Content-Type': 'multipart/form-data',
      'Accept': 'application/json'
    }
  });
};
Now I'm trying to resolve it using the blob
export const getImageUUID = async (imagePickerResult) => {
// ImagePicker saves the taken photo to disk and returns a local URI to it
let localUri = imagePickerResult.uri;
let filename = localUri.split("/").pop();
// Infer the type of the image
let match = /\.(\w+)$/.exec(filename);
let type = match ? `image/${match[1]}` : `image`;
let formData = new FormData();
const rp = await fetch(localUri);
const blob = await rp.blob();
formData.append("file", blob);
return await axios.post(FILE_URI,formData,
  {
    headers: {
      'Content-Type': 'multipart/form-data',
      'Accept': 'application/json'
    }
  });
};
But I got the not found error during requesting the file screenshot