CODEWITHSUNDEEP
c#registry
Walter Fabio Simoni
Walter Fabio Simoni

Reputation: 5729

Registry getValue with C#

I would like to read value in the registry using C#, if the values are not in the registry I create it. I have a reading problem:

 RegistryKey regKey1 = Registry.CurrentUser;
 regKey1 = regKey1.CreateSubKey(@"SOFTWARE\PNMDISPATCHER");

 if (regKey1 != null)
 {
  textBoxTaux1.Text = regKey1.GetValue("Taux1").ToString();
 }

I have the NullReferenceException when execute the GetValue function. My values are in the registry, so why i get this error?

Upvotes: 0

Views: 3124

Answers (3)

Polyfun
Polyfun

Reputation: 9639

Perhaps the NullReferenceException is for textBoxTaux1? Please post the call stack for the exception which should make this clear. You can use Exception.ToString() to get this.

Upvotes: 0

HatSoft
HatSoft

Reputation: 11201

Looks like the RegistryKey.GetValue is returning null and cannot do .ToString()

Taken from MSDN for RegistryKey.GetValue:

Retrieves the value associated with the specified name. Returns null if the name/value pair does not exist in the registry.

Upvotes: 1

Gerald Versluis
Gerald Versluis

Reputation: 34013

Well, apparently you didn't get the path right..

GetValue returns a Null when the key isn't found. Also check http://msdn.microsoft.com/en-us/library/fdf576x1

Can you debug through it and double check that the path you want to see, is indeed in the regKey1 variable at the textbox line?

Upvotes: 1

Related Questions