Reading content from a file stream c#

Question

I have a web api service that accepts file uploads. The content of the file is a small JSON string like the following:

{ "name":"John", "age":31, "city":"New York" }

How do I get the file content while it is a stream instead of having to save the stream as a file on the web server and then open the file?

The following is my snippet:

byte[] fileData = null;
using(var binaryReader = new BinaryReader(httpRequest.Files[0].InputStream))
{
      fileData = binaryReader.ReadBytes(httpRequest.Files[0].ContentLength);
}

I'm using the 4.0 .NET Framework

Answer 1

You can use a StreamReader class. Try this code:

using (var reader = new StreamReader(httpRequest.Files[0].InputStream))
{
    var content = reader.ReadToEnd();
    var json = JObject.Parse(content);
    var name = json["name"];
}

Another option is to create a class for your json (manually or by http://json2csharp.com/):

public class Person
{
    public string name { get; set; }
    public int age { get; set; }
    public string city { get; set; }
}

Then change your code to this:

using (var reader = new StreamReader(httpRequest.Files[0].InputStream))
{
    var content = reader.ReadToEnd();
    var person = JsonConvert.DeserializeObject<Person>(content);
    var name = person.name;
}