Checking if registry key exists?

Discussion in 'Questions (Windows Mobile)' started by N1c0_ds, Oct 20, 2008.

  1. N1c0_ds

    N1c0_ds Active Member Licensed User

    I want to save my application settings to the registry. I want to check if keys exist and create a key if they don't.

    It's easy to do it for one key only with errorlabel:
    Sub Loadsettings
    End Sub
    But if there is more than one entry (it's for the whole skin + all the settings), it makes much less safe. Let's say only 1 of the entries is missing. Using this method, we would have to rewrite every registry entry to the default value, thus erasing the user's settings.

    Is there a "FileExist" for the registry keys?
  2. Mr_Gee

    Mr_Gee Active Member Licensed User

    What if you made a 2nd sub which checks this for you?

    Sub Global
          key = 
    "Software\My Application"
    End Sub 

    Sub Loadsettings

    End Sub

    Sub CheckReg(What,Value)
    msgbox("The value is: " & reg.GetValue(key,What))
    'creates the subkey if it didn't exist
    msgbox("The key was created.")    
    End Sub
    BTW you might want to check the code, I'm not sure if
    is the correct way
  3. N1c0_ds

    N1c0_ds Active Member Licensed User

    That wouldn't work because errorlabel ends the sub. That's why Loadsettings is the last thing I do in App_start
  4. Erel

    Erel Administrator Staff Member Licensed User

    Did you try it?
    I think it should work properly.
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