Accessing registry key that does not exist

[xdscheetos]

I'm trying to acces and read a registry value but on some computers the key / subkey do not exist.

SO I keep getting an error message saying:

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An unhandled exception of type 'System.NullReferenceException' occurred in dc.exe

 

Additional information: Object reference not set to an instance of an object.

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Anyway of checking the existance of the key before hand ?

Or checking the result for validity ?

At the moment I get Nothing as a value when I step thru the code. Already tried testing for getype.tostring = "Nothing" .

 

 

VB.net and using the following fonctions:

Registry.LocalMachine.OpenSubKey("SOFTWARE\abc\def").GetValue("myvalue")

 

Any help is appreciated,

thanks

[Robby]

Use ...

 

If Not xxx = nothing then

[xdscheetos]

Thank you very much !

just what I needed :cool:

 

Feel kinda stupid now hehehe :rolleyes:

 

edit: this is the code that worked in case others need it as well...

regKey = Registry.LocalMachine.OpenSubKey("SOFTWARE\MyCie\MySubKey")

If Not (regKey Is Nothing) Then strRegKey = regKey.GetValue("keynamehere")

Edited November 12, 2003 by xdscheetos