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Registry Access - 32 vs 64 bit Mode RRS feed

  • Question

  • This is a form with a button and a multiline textbox

    Code:

    Option Strict On
    Imports Microsoft.Win32
    Public Class Form1
        Const RegKey As String = "SOFTWARE\Microsoft\Windows NT\CurrentVersion"
        Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
            Using rk As RegistryKey = My.Computer.Registry.LocalMachine.OpenSubKey(RegKey, False)
                Dim O As Object
                Dim RegTypes As New List(Of String)
                Dim Names As New List(Of String)
                Dim Kind As RegistryValueKind
                Dim Padlength As Integer = 0
                For Each S As String In rk.GetValueNames
                    Names.Add(S)
                    O = rk.GetValue(S, Nothing)
                    If Not O Is Nothing Then
                        Kind = rk.GetValueKind(S)
                        If Kind = RegistryValueKind.Binary Then
                            RegTypes.Add(Kind.ToString & " (" & DirectCast(O, System.Array).Length.ToString & ")")
                        Else
                            RegTypes.Add(Kind.ToString)
                        End If
    
                    End If
                Next
                For Each Name As String In Names
                    If Name.Length > Padlength Then Padlength = Name.Length
                Next
                Padlength += 2
                TextBox1.Text = "Contents of HKLM\" & RegKey & vbNewLine & vbNewLine
                TextBox1.AppendText("Entry Name".PadRight(Padlength + 3) & "Entry Type" & vbNewLine)
                For I As Integer = 0 To Names.Count - 1
                    TextBox1.AppendText((I + 1).ToString("00") & "-" & Names(I).PadRight(Padlength) & RegTypes(I) & vbNewLine)
                Next
            End Using
        End Sub
    
        Private Sub Form1_Shown(sender As Object, e As EventArgs) Handles Me.Shown
            Me.Text = "Running in " & (IntPtr.Size * 8).ToString & "bit Mode"
        End Sub
    End Class

    Why are the results different in "Any CPU" versus "x86"? My Computer is 64 bit

    Friday, December 27, 2019 10:31 PM

Answers

  • What this is, when compiled between any cpu and 64 bit values are read from different locations in the registry.

    32-bit and 64-bit Application Data in the Registry Registry Redirector


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    • Marked as answer by Devon_Nullman Saturday, December 28, 2019 5:32 AM
    Saturday, December 28, 2019 3:07 AM
    Moderator

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