Sorting a hashtable

I wrote this command to show the size of all sub-folders in a folder:

dir | ? { $_.PsIsContainer } | % { $t=0;dir -rec $_.Name | % {$t +=
$_.Length }; @{$_.Name=$t}}

This outputs:

Name Value
---- -----
Avaya 1887047
C# 294
PowerShell 8643
Regular Expressions 161
Sql 3914
Windows 1964032


Now, I'd like to sort them by size (or the "Value" property of the
Hashtable). I append "sort value" to the end of my command:

dir | ? { $_.PsIsContainer } | % { $t=0;dir -rec $_.Name | % {$t +=
$_.Length }; @{$_.Name=$t}} | sort value

But I get:

Name Value
---- -----
Regular Expressions 161
Sql 3914
Windows 1964032
Avaya 1887047
C# 294
PowerShell 8643


How do I get this to sort?!

There should be other ways to accomplish sorting Hashtable data by
"value"s, but the easiest way is to access the "Values" property of
pipeline object of type Hashtable.

dir | ? {$_.PsIsContainer} | % { $t=0; ls -r $_.Name | % {$t +=
$_.Length }; @{ $_.Name=$t } } | sort {$_.Values}

In the last section of the pipeline, "sort-object"'s input object takes
in script block argument and sort by the "Values" property of the
hashtable object.