C# System.Configuration.ApplicationSettingsBase Mystery

Question

_{Thursday, February 11, 2016 6:22 AM}

Hi

In an existing program with a settings class like below, I added a new setting with the default value as True.
I then deleted the relevant user.config from C:\Users\me>\AppData\Local\Schneider_Electric

HOWEVER when I start, the setting is coming through as FALSE. I know I have the correct user.config because when I set the setting to true and save, the user.config gets updated correctly.

>> I am completely stumped on why this does work when other settings which are set True come through,

>> Ideas ?

e.g. trace as point of class being created

  KernelOnMenu true bool
  Language "Auto" string
 
  ListGlobalStore false bool
  MinorVersionSupport false bool  <= should be true

Thanks in advance

    [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("Microsoft.VisualStudio.Editors.SettingsDesigner.SettingsSingleFileGenerator", "10.0.0.0")]
    internal sealed partial class Settings : global::System.Configuration.ApplicationSettingsBase {
        
        private static Settings defaultInstance = ((Settings)(global::System.Configuration.ApplicationSettingsBase.Synchronized(new Settings())));
        
        public static Settings Default {
            get {
                return defaultInstance;
            }
        }
...
... new setting
        [global::System.Configuration.UserScopedSettingAttribute()]
        [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
        [global::System.Configuration.DefaultSettingValueAttribute("True")]
        public bool MinorVersionSupport {
            get {
                return ((bool)(this["MinorVersionSupport"]));
            }
            set {
                this["MinorVersionSupport"] = value;
            }
        }        [global::System.Configuration.UserScopedSettingAttribute()]
[global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
[global::System.Configuration.DefaultSettingValueAttribute("True")]    publicboolKernelOnMenu {          get{               return((bool)(this["KernelOnMenu"]));
            }
set{              
this["KernelOnMenu"] = value;
            }
        }

All replies (3)

_{Monday, February 15, 2016 5:10 AM ✅Answered}

I found the answer, hinted at in https://msdn.microsoft.com/en-us/library/8eyb2ct1(v=vs.110).aspx

It turns out that <app>.exe.config is the MASTER copy, i.e. these code defaults are ignored if this exists

So you have two options :

- delete <app>.exe.config from your bin area

• edit your app.config to correspond with the default settings in your code

I am sure there are meant to be advantages to this approach, but for me, it is only asking for trouble having two systems running.

regards

_{Friday, February 12, 2016 5:59 AM}

Hi Greg B Roberts,

Have you found MinorVersionSupport setting section in your config?

<setting name="MinorVersionSupport" serializeAs="String">
    <value>True</value>
</setting>

Have you assign new value to MinorVersionSupport in other place of your application? For example:

Properties.Settings.Default.MinorVersionSupport = false;

Best Regards,
Li Wang

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_{Friday, February 12, 2016 6:51 AM}

Hi

On first question yes, it is in the code sample above

On the 2nd question yes there is code to change the setting when you run the options form however the options form is populated with the settings first when fired.

The first call to the settings occurs as a consequence of code below.

Note: on a fresh run where user.config has been deleted the entries for these settings do not appear. However of exit of the program the settings show up as this is a code call to save settings.

At start the set code does not get called and the value is false

>> So I suppose it would be good to know what actual function is processing the Attributes at startup to find out what is going on ?

using(MutexsingleInstanceMutex = newMutex(true, mutexName, outownershipGranted)

{

if(ownershipGranted)

{

if(Settings.Default.Language != "Auto") <= First call and new param false

{