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Saturday, March 6, 2010

VB.NET: Read Registry Value

Imports Microsoft.Win32

dim MyValue as string
MyValue = RegValue(RegistryHive.LocalMachine, "SOFTWARE\Microsoft\Internet Explorer", "Version")

Public Function RegValue(ByVal Hive As RegistryHive, ByVal Key As String, ByVal ValueName As String, Optional ByRef ErrInfo As String = "") As String
Dim objParent As RegistryKey
Dim objSubkey As RegistryKey
Dim sAns As String
Select Case Hive
Case RegistryHive.ClassesRoot
objParent = Registry.ClassesRoot
Case RegistryHive.CurrentConfig
objParent = Registry.CurrentConfig
Case RegistryHive.CurrentUser
objParent = Registry.CurrentUser
Case RegistryHive.DynData
objParent = Registry.DynData
Case RegistryHive.LocalMachine
objParent = Registry.LocalMachine
Case RegistryHive.PerformanceData
objParent = Registry.PerformanceData
Case RegistryHive.Users
objParent = Registry.Users
End Select
Try
objSubkey = objParent.OpenSubKey(Key)
'if can't be found, object is not initialized
If Not objSubkey Is Nothing Then
sAns = (objSubkey.GetValue(ValueName))
End If
Catch ex As Exception
sAns = "Error"
ErrInfo = ex.Message
Finally
If ErrInfo = "" And sAns = "" Then
sAns = "No value found for requested registry key"
End If
End Try
Return sAns
End Function

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