c# - how to read file data in web api 2?

Question

I use the MultipartFormDataStreamProvider to read uploaded files as the snippet below illustrates. However this isn't secure as it saves the files straight to temp. First, I want to inspect the raw bytes and perform some validation checks. Please show me how to access the raw bytes.

if (Request.Content.IsMimeMultipartContent())
{
    MultipartFormDataStreamProvider streamProvider = new MultipartFormDataStreamProvider("C:\temp");

     return this.Request.Content
            .ReadAsMultipartAsync<MultipartFormDataStreamProvider>(streamProvider)
            .ContinueWith((tsk) =>
            {
                 MultipartFormDataStreamProvider provider = tsk.Result;

            });

}

Answer 1

var provider = await Request.Content.ReadAsMultipartAsync(new MultipartMemoryStreamProvider());

foreach (var c in provider.Contents)
{
  var stream = await c.ReadAsStreamAsync();
  // do something with the stream
}