I’m trying to make some PowerShell cmdlets in C# and created a DataChunk class for storing binary data. It just holding byte[] array. The goal was to read bytes from file into DataChunk to show it how I need it. So I wrote ToString() method. But it seems that PowerShell not using it. Why?

PS> $data = Read-BinaryData test.bin
PS> $data.GetType()

IsPublic IsSerial Name                                     BaseType
-------- -------- ----                                     --------
True     False    DataChunk                                System.Object

This is what I need:

PS> $data.ToString()
07 65 20 AE F6 8D 4F 00 97 A8 33 C9 81 EB 80 AE 92 87 7D 08

This is how it works now:

PS> $data

Count
-----
   20

The class is simple:

public class DataChunk
{
    byte[] data;
    public int Count => data.Length;
    public override string ToString() { ... }
}

How to make my own class to show up in PowerShell like I need to?