How to change application settings (Settings) while app is open?
-
19-09-2019 - |
Question
I've written a class that should allow me to easily read and write values in app settings:
public static class SettingsManager
{
public static string ComplexValidationsString
{
get { return (string)Properties.Settings.Default["ComplexValidations"]; }
set
{
Properties.Settings.Default["ComplexValidations"] = value;
Properties.Settings.Default.Save();
}
}
the problem is the value isn't really saved, I mean it is not changed when I exit the application and run it again. What can I do to ensure that the saved value persists between closing and opening again?
Solution
You should check
Properties.Settings.Default.Properties["ComplexValidations"].IsReadOnly
It is probably true, this is what Roland means with "Application Scope". Save will fail silently. Take a look at Project|Properties|Settings, 3rd column.
OTHER TIPS
settings scope must be user not application
Are you sure it's not saving the changes? The [ProgramName].exe.config file in the bin folder won't be updated. The acutal file used is usually put in C:\Documents and Settings\[user]\Local Settings\Application Data\[company name]\[application].exe[hash string]\[version]\user.config
. I know when I tried this kind of thing it took me a while to realise this was the file that was getting updated.
I just tested a User Setting and it is persisted if you run this Console app twice:
class Program
{
static void Main(string[] args)
{
Console.WriteLine(Settings1.Default.Setting);
Console.ReadLine();
Settings1.Default.Setting = "A value different from app.config's";
Settings1.Default.Save();
}
}
Just try it out. It won't take a minute.