Save data for next session

[gintonic42]

Hi, i just switched from VC6 to .NET 2 (2005 edition). Besides a lot of other things i have problems to get used to the all new techniques. I want to store a value in a dialog for the next session with my app.
Befor i used WriteProfileInt from the Windows SDK i.e. and in the OnInitDialog i loaded the value with GetProfileInt from the SDK.
What do i have to do in .NET?
I read something about configuration .config XML files etc. but did not find a easy way to store the data when exiting the app.

Please help

[Zaccheus]

As a first simple solution you could use Microsoft::Win32::Registry and Microsoft::Win32::RegistryKey :

http://msdn2.microsoft.com/en-us/lib...y_members.aspx
http://msdn2.microsoft.com/en-us/lib...y_members.aspx

It might be an idea to create your own settings class, where each setting is represented externally as a property. Internally it could use the registry but later on could be changed to use XML config files instead.

[gintonic42]

Hy Zaccheus,
is there an easy example to approach my own settings class?

[Zaccheus]

Here's a simplified version of what I use:

// .h

public ref class ApplicationConfiguration
{
public:
    static System::String^ ReadString
        (
        System::String^ inKeyName,
        System::String^ inValueName,
        System::String^ inDefault
        );
    static void WriteString
        (
        System::String^ inKeyName,
        System::String^ inValueName,
        System::String^ inValue
        );
private:
   /////////////////////////////////////////////////////////////////
   // Choose your own company name and application name.
   /////////////////////////////////////////////////////////////////
    static System::String^ baseName = L"HKEY_CURRENT_USER\\Software\\MYCOMPANYNAME\\MYAPPNAME\\";
};

// .cpp

System::String^ ApplicationConfiguration::ReadString
    (
    System::String^ inKeyName,
    System::String^ inValueName,
    System::String^ inDefault
    )
{
    System::Object^ result = Microsoft::Win32::Registry::GetValue(baseName + inKeyName, inValueName, inDefault);
    
    return dynamic_cast<System::String^>(result);
}

void ApplicationConfiguration::WriteString
    (
    System::String^    inKeyName,
    System::String^    inValueName,
    System::String^    inValue
    )
{
    Microsoft::Win32::Registry::SetValue(baseName + inKeyName, inValueName, inValue, Microsoft::Win32::RegistryValueKind::String);
}

Obviously you would replace MYCOMPANYNAME and MYAPPNAME with something meaningful.

[gintonic42]

Thanks for that, but this is not exactly, what i am looking for. I dont want a workaround for that, i would like to use the "normal" mechanism.
I have found out something new.
In VS opening a dialog in design mode, an edit box has a property called ApplicationSettings->PropertyBinding, where you can setup application settings. This seems to be the mechanism, that uses these .config xml files for the properties. But this does not work on my system. If i try to add a new setting, i get an error message:
In my german system:
"Im Projekt wurden keine Einstellungsdateien gefunden. Fügen Sie eine Einstellungdatei hinzu, und wiederholen Sie den Vorgang." which says:
There is no settings file in the project. Add one and try again.
In the help it is said, to use the Project-Designer for that, but i have no project designer and the method in the helpfile seems to talk of a different compiler. My VS has no project designer.
Does anybody know this problem?

[Zaccheus]

Ok, I thought you just want a simple replacement for INI files.


I have not yet investigated the technique you are talking about, but it sounds like I should.

[vito_r]

Throw on form TextBox, click on it further in a window of properties open ApplicationSettings, and for property Text set create new adjustment. Thus property Text will be connected with My. Settings.
Not having written a uniform line of a code, the data from this text field will be stored in adjustments.

Probably something is done not so?

[gintonic42]

Hy, i was a little on holiday.
If i try to do so, i get an error message like described above. I do not have a design manager. What is that? There is nothing with that name in my environment. I am using VS 2005 with VC++ 2005. Are you talking about the same version?
Your technique seems to be, what i am searching for, but it does not work on my computer.