I have a fixed length string message in a that looks like this:

```
"\0\0\0j\0\0\0\vT3A1111        2999BOSH                          2100021        399APV                           2100022  "

```

This message is created from me reading a byte[] into a StringBuilder to build string. 

Above, string portion "`\0\0\0j\0\0\0\v`" are supposed to be LENGTH and ID fields, both 4 bytes long. However, I am not sure how to extract these 2 values but I can see that `HEX 0j` is 106 (1+1+8+9+30+9+9+30+9=106 total in length). I am not sure why the "v" is not "0v" above but I know it is supposed to be HEX value representing message id.

First 2 fields of length 4 are HEX, all other are ASCII.

This is not an EDI message (so cannot use EDI parser library) and unlike EDI messages which has some kind of field identifier, I have only stream of bytes and I know only the length of the fields. The fields are:

```
4  byte long message length      ("\0\0\0j")
4  byte long message id          ("\0\0\0\v")
1  byte long message type        ("T")
1  byte long message sequence    ("3")
8  byte long car Id              ("A1111   ")  
9  byte long part-1 price        ("     2999")
30 byte long part-1 manufacturer ("BOSH                          ")
9  byte long part#               ("2100021  ")
9  byte long part-2 price        ("      399")
30 byte long part-2 manufacturer ("APV                           ")
9  byte long part#               ("2100022  ")

```

So, above I have 2 parts made by 2 manufacturers but in real example, it could be more parts than just 2:

```
Part 1, 29.99, made by Bosh, part# 2100021
Part 2, 3.99, made by APV, part# 2100022

```

I would like to get all price and manufacturer fields out of this flat file string into a List objects where Part is

```
class Part
{
   public decimal Price {get; set}
   public string Manufacturer {get; set;}
   public string PartNumber {get; set;}
}

```

So, my List would contain all parts with their prices and manufacturers.

Since I have lengths of each fields, I know I could loop through this string and get me the Part related data. But, I wonder if there is a more elegant and easier way to do this.

Or even better, is there a open source library allowing me to parse something like this?

I receive this message using this method

```
private TcpClient clientSocket;
private NetworkStream serverStream;

private async System.Threading.Tasks.Task ReadResponseAsync()
{
    if (serverStream.CanRead)
    {
        byte[] readBuffer = new byte[1024];
        StringBuilder receivedMessage = new StringBuilder();
        int readSoFar = 0;

        do
        {
            readSoFar = await serverStream.ReadAsync(readBuffer, 0, readBuffer.Length);
            receivedMessage.AppendFormat("{0}", Encoding.ASCII.GetString(readBuffer, 0, readSoFar));
        } 
        while (serverStream.DataAvailable);

        string msg = receivedMessage.ToString();
    }
    else
    {
        Log("Error", "Cannot read from NetworkStream");
    }
}

```

@Enigmativity - I tried posting your answer and running it in LinqPad (never used it, just downloaded and installed it) but I dont see the table-like structure you posted in your answer. How do you get that? 

Here is what I get
[![enter image description here](https://i.stack.imgur.com/dYKOe.png)](https://i.stack.imgur.com/dYKOe.png)