C# – the Properties.Settings.Default stored

cnetsettings

I thought I knew this, but today I'm being proven wrong – again.

Running VS2008, .NET 3.5 and C#. I added the User settings to the Properties Settings tab with default values, then read them in using this code:

myTextBox.Text = Properties.Settings.Default.MyStringProperty;

Then, after the user edits the value in the options dialog I save it like this:

Properties.Settings.Default.MyStringProperty = myTextBox.Text;
Properties.Settings.Default.Save();

My question is, where is this new value saved? the MyApp.exe.config file in the executable directory is not updated, it still contains the default values. Plus, as far as I can tell, none of the other files in that directory are updated either! However, when the program reads the value back in, it gets the changed value, so I know it's saved somewhere…

This isn't just academic, I needed to be able to manually edit the value this morning and got myself stumped when I couldn't find anything that was changing.

Best Answer

In order to work with newer versions of Windows' policy of only allowing read access by default to the Program Files folder (unless you prompt for elevation with UAC, but that's another topic...), your application will have a settings folder under %userprofile%\appdata\local or %userprofile%\Local Settings\Application Data depending on which version of Windows you're running, for settings that are user specific. If you store settings for all users, then they'll be in the corresponding folder under C:\users or C:\Documents and Settings for all user profiles (ex: C:\users\public\appdata\local).

This is the style that Microsoft tends to use in their examples.

It appears that the guidance in this area may have changed, as StyleCop now enforces the use of the C# specific aliases.

C# – Calling the base constructor in C#

Modify your constructor to the following so that it calls the base class constructor properly:

public class MyExceptionClass : Exception
{
    public MyExceptionClass(string message, string extrainfo) : base(message)
    {
        //other stuff here
    }
}

Note that a constructor is not something that you can call anytime within a method. That's the reason you're getting errors in your call in the constructor body.

Best Answer

Related Solutions

C# – the difference between String and string in C#

This is the style that Microsoft tends to use in their examples.

C# – Calling the base constructor in C#

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