c# - Registry.LocalMachine.OpenSubKey(regPath); returns NULL in .NET 3.5 Environment -

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i trying access registry using following command:

string regpath = "software\\bentley\\autopipe\\v8i ribbon , reporting";  registrykey ribbonkey = registry.localmachine.opensubkey(regpath);

i have tried different methods i.e. this one , this faced same error:

object reference not set instance of object.

it return me null in ribbonkey key exists in registry. have searched on topic , found many solutions this not me because using .net 3.5.

any highly appreciated.

what system running? have tried little solution?

opensubkey() returns null registry key can see in regedit.exe


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