将字节数组转换为图像

Question

We are using Flash to send an image to the servers and upload an image. The way we're trying to do this is by sending the bytes to the server through a parameter and then converting the bytes to an image.

http://i.gyazo.com/fb8225af80ef465b0262d97f63bd54b2.png

In the image the object is sending a few different bits of information. I'm not sure if I am supposed to just receive one bit of information instead of the entire object.

So far I have the post request

string byteArray = Request["bytes"];

Then I am trying to convert it to an image

string file_name = Guid.NewGuid().ToString();

//byte[] imageBytes = Convert.FromBase64String(byteArray);

Derio.App.Model.Helper.ByteArrayToFile(file_name, Derio.App.Model.Helper.GetBytes(byteArray));

My helper method looks like -

public static class Helper
{
    public static byte[] GetBytes(string str)
    {
        byte[] bytes = new byte[str.Length * sizeof(char)];
        System.Buffer.BlockCopy(str.ToCharArray(), 0, bytes, 0, bytes.Length);
        return bytes;
    }

    public static string ByteArrayToFile(string _FileName, byte[] _ByteArray)
    {
        try
        {
            // Open file for reading
            System.IO.FileStream _FileStream =
               new System.IO.FileStream(_FileName, System.IO.FileMode.Create,
                                        System.IO.FileAccess.Write);
            // Writes a block of bytes to this stream using data from
            // a byte array.
            _FileStream.Write(_ByteArray, 0, _ByteArray.Length);

            // close file stream
            _FileStream.Close();

            return "true";
        }
        catch (Exception _Exception)
        {
            // Error
            return "Exception caught in process:" +     _Exception.ToString();
        }
    }
}

We've multiple different methods such as trying to convert it from Base64String to an image.

I can't for the life of me though figure out what I am doing wrong.

Answer 1

What happens when you try this:

string file_name = Guid.NewGuid().ToString();
string byteArray = Request["bytes"];
byte[] imageBytes = Convert.FromBase64String(byteArray);
IO.File.WriteAllBytes(file_name, imageBytes);