Working with JSON in PowerShell

PS> $hash1 = [ordered]@{Key1="AAA";Key2="BBB"}
PS> $hash2 = [ordered]@{Key1="CCC";Key2="DDD"}
PS> $object = [pscustomobject]@(
>> $hash1
>> $hash2
>> )
>>
PS> $object | ConvertTo-Json | Out-File sample.json -Encoding utf8
PS> Get-Content .\sample.json
[
  {
    "Key1": "AAA",
    "Key2": "BBB"
  },
  {
    "Key1": "CCC",
    "Key2": "DDD"
  }
]
PS> $object2 = [pscustomobject]@{
>> Hash1 = $hash1
>> Hash2 = $hash2
>> }
>>
PS> $object2 | ConvertTo-Json | Out-File sample2.json -Encoding utf8
PS> Get-Content .\sample2.json
{
  "Hash1": {
    "Key1": "AAA",
    "Key2": "BBB"
  },
  "Hash2": {
    "Key1": "CCC",
    "Key2": "DDD"
  }
}

# Prepare text.json
PS> $hash = [ordered]@{Text="Text";Num=100}
PS> $hash | ConvertTo-Json | Out-File test.json -Encoding utf8
PS> Get-Content ./test.json
{      
  "Text": "Text",
  "Num": 100
}

# Convert, edit, and add members to an object based on a JSON file
PS> $obj = Get-Content ./test.json -Raw | ConvertFrom-Json
PS> $obj
 
Text Num
---- ---
Text 100
 
PS> $obj.Num++
PS> $obj
 
Text Num
---- ---
Text 101
 
PS> $obj.Text = $obj.Text + "Add"
PS> $obj
 
Text    Num
----    ---
TextAdd 101
 
PS> $obj | Add-Member -MemberType NoteProperty -Name Text2 -Value "Text2"
PS> $obj
 
Text    Num Text2
----    --- -----
TextAdd 101 Text2
 
PS> $obj | ConvertTo-Json | Out-File test2.json -Encoding utf8
PS> Get-Content ./test2.json -Encoding UTF8
{     
  "Text": "TextAdd",
  "Num": 101,
  "Text2": "Text2"
}