Inputstream and contentlength is missing in microsoft.aspnet

As my review to the Microsoft.AspNet.Http.Abstractions, the IFormFile is missing the InputStream and ContentLength in ASP.NET MVC 6, it insteads of OpenReadStream, which is not functioned to respnse to the ConvertToBytes, for example:

private byte[] ConvertToBytes(IFormFile image)
{
byte[] imageBytes = null;
//Then, Read stream in Binary
BinaryReader reader = new BinaryReader(image.InputStream);
imageBytes = reader.ReadBytes((int) image.ContentLength);
return imageBytes;
}

Do you know what happen to InputStream and ContentLength? In the IFormFile, are available of OpenReadStream and Length. I don't know how to use it. Do anyone know how to use it. I would like to have similar code as below example:

private byte[] ConvertToBytes(IFormFile image)
{
byte[] imageBytes = null;
//Then, Read stream in Binary
BinaryReader reader = new BinaryReader(image.OpenReadStream());
imageBytes = reader.ReadBytes((int) image.Length);
return imageBytes;
}

What I have tried below code, but it does't work because of BinaryReader reader = new BinaryReader(image.OpenReadStream()) show up System.NullReferenceException was unhandled by user code with HResult=-2147467261
and the Message=Object reference not set to an instance of an object.:

private byte[] ConvertToBytes(IFormFile image)
{
byte[] imageBytes = null;
//Then, Read stream in Binary
BinaryReader reader = new BinaryReader(image.OpenReadStream());
imageBytes = reader.ReadBytes((int) image.Length);
return imageBytes;
}

Can you help me to resolve this problem?

1 Reply

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Afzaal Ahmad Zeeshan10y ago
Accepted answer
ASP.NET 5 is written to be executable on other platforms too, instead of just running on a .NET library. That is why, ASP.NET was re-written from ground up.

The file, IFormFile, is a file that is used to upload the files, the API has everything that it had previously. But they are a bit different. You can use these, to perform the same actions. Although, ASP.NET 5 is not released as a framework because it is still under development.