将多个字节[]保存到多个文件中的问题

Question

我扫描了3张图片，但只保存了最后一张图片。关于我遗失或做错的任何建议......谢谢。

string ScanData;
using (Stream receiveStream = Request.InputStream)
{
    using (StreamReader readStream = new StreamReader(Request.InputStream, Encoding.UTF8))
    {

        ScanData = readStream.ReadToEnd();
    }
}

IEnumerable x = Convert.FromBase64String(ScanData.Replace("data:;base64,", String.Empty));

byte[][] datain = x.OfType<byte[]>().ToArray();

foreach (var data in datain)
{

    int counter = 0;

    System.IO.File.WriteAllBytes(@"C:\\" + DateTime.Now.ToString("MM-dd-yyyy") + "-" + counter++ + ".check", data);

    //3 items get scanned and only the last item is saved... help?!


}

这是我的原始代码，我尝试添加byte [] []以查看它是否有帮助。 我只收到一张图片，当发送3张图片时。

string ScanData;

        using (Stream receiveStream = Request.InputStream)
        {

            using (StreamReader readStream = new StreamReader(receiveStream, Encoding.UTF8))
            {
                ScanData = readStream.ReadToEnd();
            }

        }

        try
        {

            byte[] data = Convert.FromBase64String(ScanData.Replace("data:;base64,", String.Empty));

            System.IO.File.WriteAllBytes(@"C:\\" + DateTime.Now.ToString("MM-dd-yyyy") + "-" + counter++ + ".check", data);

        }
        catch (Exception e)
        {
            throw new Exception("Error: " + e.Message);
        }