Read a registry key value

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3.00/5 (1 vote)

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I was trying to read a simple registry keyvalue using the below code:

VB

Dim aa As Object
aa = Registry.GetValue("HKEY_CURRENT_USER\\Software\\Avira\\AntiVir Desktop", "LastCommandLine", Nothing)

aa variable value is always Nothing.

What am I doing wrong here?
Please advise.

Then I tried the same in C# code and its working fine.
The code is As below:

object  aa = Registry.GetValue("HKEY_CURRENT_USER\\Software\\Avira\\AntiVir Desktop","LastCommandLine",null);

Posted 9-Oct-12 7:14am

arun_pk

Updated 9-Oct-12 9:34am

WebMaster

v2

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This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Sergey Alexandrovich Kryukov · Accepted Answer · 2012-10-09T07:25:00

Solution 1

Try

VB

Dim aa As Object
       aa = Registry.GetValue("HKEY_CURRENT_USER\Software\Avira\AntiVir Desktop", "LastCommandLine", Nothing)

Can you see why? The key value you really need is "HKEY_CURRENT_USER\Software\Avira\AntiVir Desktop"; and the double '\\' simply means escaped '\', by C# syntax, not VB.NET. To make C# code similar, use verbose modifier '@':

C#

object aa = Registry.GetValue(@"HKEY_CURRENT_USER\Software\Avira\AntiVir Desktop","LastCommandLine", null);

Better now? :-)

—SA

Posted 9-Oct-12 7:25am

Sergey Alexandrovich Kryukov

Updated 9-Oct-12 8:55am

v5

Comments

arun_pk 9-Oct-12 13:35pm

not better .. just the best :) my 5

Sergey Alexandrovich Kryukov 9-Oct-12 13:38pm

You accepted it -- thank you, but probably forgot to vote :-)
--SA

RaisKazi 9-Oct-12 13:45pm

Here you Go!

Sergey Alexandrovich Kryukov 9-Oct-12 13:50pm

You, too? :-)
Thank you, Rais.
--SA

arun_pk 9-Oct-12 13:56pm

done thank you Sergey

Sergey Alexandrovich Kryukov 9-Oct-12 13:58pm

Pleasure to work with an inquirer who can actually use the help and do the job right. Unfortunately, most of our inquirers these days are underqualified for such things.

You are very welcome.
Good luck, call again.
--SA

arun_pk 9-Oct-12 14:42pm

what is an inquirer?

Sergey Alexandrovich Kryukov 9-Oct-12 14:45pm

You, in this case. :-) This is one way to call a person who asks a question. What I meant to say that it was my pleasure to work with you, who immediately got the solution and was able to use it.

Also, CodeProject people often call them "OP" -- Original Publisher...
--SA

arun_pk 9-Oct-12 14:51pm

ok ..

Read a registry key value

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Read a registry key value

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