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vb.net 08 Reading data from multiple reg keys

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Comatose

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Re: vb.net 08 Reading data from multiple reg keys

#11

Jan 7th, 2009

C# IS .net. It's just a C style usage of it.

 Help with Code Tags 
 vb.net Syntax (Toggle Plain Text) 
    Public Function GetInstalled()
        Dim uninstallKey As String
        Dim rk As RegistryKey
        Dim sk As RegistryKey
        Dim skName As String
        Dim sublist As New ArrayList
 
        uninstallKey = "SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall"
 
        rk = Registry.LocalMachine.OpenSubKey(uninstallKey, True)
 
        For Each skName In rk.GetSubKeyNames()
            sk = rk.OpenSubKey(skName)
            sublist.Add(sk.GetValue("DisplayName"))
        Next skName
 
        Return sublist
    End Function
    Public Function GetInstalled()
        Dim uninstallKey As String
        Dim rk As RegistryKey
        Dim sk As RegistryKey
        Dim skName As String
        Dim sublist As New ArrayList

        uninstallKey = "SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall"

        rk = Registry.LocalMachine.OpenSubKey(uninstallKey, True)

        For Each skName In rk.GetSubKeyNames()
            sk = rk.OpenSubKey(skName)
            sublist.Add(sk.GetValue("DisplayName"))
        Next skName

        Return sublist
    End Function

EDIT: Sorry, Didn't Refresh The Page Before Posting...

Last edited by Comatose; Jan 7th, 2009 at 10:37 am.

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Re: vb.net 08 Reading data from multiple reg keys

#12

Jan 7th, 2009

Try Comatose's code, and tell what you get?

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Re: vb.net 08 Reading data from multiple reg keys

#13

Jan 7th, 2009

okay that code returns no errors but how do i display the display names it finds in a combo or text box?

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Re: vb.net 08 Reading data from multiple reg keys

#14

Jan 7th, 2009

Drag a comboBox and drop it into your form
Edit Comatose's code

 Help with Code Tags 
 vb.net Syntax (Toggle Plain Text) 
For Each skName In rk.GetSubKeyNames()            
sk = rk.OpenSubKey(skName)            
comboBox1.Items.Add(sk.GetValue("DisplayName"))        
Next skName
For Each skName In rk.GetSubKeyNames()            
sk = rk.OpenSubKey(skName)            
comboBox1.Items.Add(sk.GetValue("DisplayName"))        
Next skName

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Re: vb.net 08 Reading data from multiple reg keys

#15

Jan 7th, 2009

okay, but when i run the code nothing gets returned in the box.

could it be the displayname part as if you go to the registry and pick a sub key, you will see displayname. When you click on display name the key is shown but its the 2nd part under value data i need.

as if i want a particular key for the processor i use

 Help with Code Tags 
 VB.NET Syntax (Toggle Plain Text) 
Dim myCPUDescription As String = My.Computer.Registry.GetValue("HKEY_LOCAL_MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0", "ProcessorNameString", "No CPU Found").ToString.Trim
Dim myCPUDescription As String = My.Computer.Registry.GetValue("HKEY_LOCAL_MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0", "ProcessorNameString", "No CPU Found").ToString.Trim

and that returns the value data under the key

Last edited by smelf1; Jan 7th, 2009 at 11:57 am.

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Re: vb.net 08 Reading data from multiple reg keys

#16

Jan 7th, 2009

You shouldn't modify the function. The concept of a function, is that you shouldn't make them interact with the form. The idea of a function is that a function can be modular.... what if in the future, you decide to change it from a combobox, to a listbox... or save it to a file. Then you have to modify the function that actually GETS the display names of the registry keys. The purpose of a function is abstraction.... what this function does, is get the list of items in the registry (their display values) and returns them to the calling procedure. So for example, if you have a button, you would do:

 Help with Code Tags 
 vb.net Syntax (Toggle Plain Text) 
dim something as new arraylist
something = GetInstalled()
for I = 0 to something.count 
     msgbox something(i)
next I
dim something as new arraylist
something = GetInstalled()
for I = 0 to something.count 
     msgbox something(i)
next I

It might have to be for I = 0 to something.count -1

Last edited by Comatose; Jan 7th, 2009 at 12:26 pm.

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Re: vb.net 08 Reading data from multiple reg keys

#17

Jan 7th, 2009

I know Comatose, but it was my last chance to get him solve his problem!!!

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Re: vb.net 08 Reading data from multiple reg keys

#18

Jan 7th, 2009

I know why you did it, and were absolutely right... I just wanted to make the distinction for him, so that he understands the concepts. I would have suggested the same code mod you did

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Re: vb.net 08 Reading data from multiple reg keys

#19

Jan 7th, 2009

ah right so the function is left alone so if i add a button i would now need to call that function from the code under the button.

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Re: vb.net 08 Reading data from multiple reg keys

#20

Jan 7th, 2009

Right, it returns an arraylist. So you would call it from the button, then assign the return value to an arraylist, and loop through it.

 Help with Code Tags 
 vb.net Syntax (Toggle Plain Text) 
dim something as new arraylist
something = GetInstalled()
for I = 0 to something.count 
     msgbox something(i)
next I
dim something as new arraylist
something = GetInstalled()
for I = 0 to something.count 
     msgbox something(i)
next I