public override async Task ExecuteBindingAsync( ModelMetadataProvider metadataProvider, HttpActionContext actionContext, CancellationToken cancellationToken )
{
Contract.Assume( metadataProvider != null );
Contract.Assume( actionContext != null );
var request = actionContext.Request;
var content = request.Content;
if ( content != null )
{
await content.LoadIntoBufferAsync();
}
var message = new HttpMessageContent( request );
using ( var stream = await message.ReadAsStreamAsync() )
{
actionContext.ActionArguments[Descriptor.ParameterName] = Checksum.AsBase64( stream );
}
}