Question

• I have created a Installhelper.cs which is inhered from the Installer.
• Override the Install() method by using this piece of code(A).

These values that are inserted to the app.config are not available in the [projectName].exe.config file that is created after installation.
I have already added a section as shown below in the app.config manually (B)

data is passed to the installer class but the data is not written to the app.config fields. They remain same in the created configuration file during installation.

Any Help is greatly appreciated. I have spent almost a day on this.

Code A:

[RunInstaller(true)]
public partial class Installation : System.Configuration.Install.Installer
{
    public Installation()
    {
        InitializeComponent();
    }

    public override void Install(IDictionary stateSaver)
    {
        //base.Install(stateSaver);

        try
        {
            // In order to get the value from the textBox named 'EDITA1' I needed to add the line:
            // '/PathValue = [EDITA1]' to the CustomActionData property of the CustomAction We added. 

            string userName = Context.Parameters["userName"];
            string password = Context.Parameters["password"];
            string folderPath = Context.Parameters["path"];

            MessageBox.Show(userName);
            MessageBox.Show(password);
            MessageBox.Show(folderPath);

            Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
           //config.AppSettings.Settings.Add("userName", userName);
           //config.AppSettings.Settings.Add("password", password);
           //config.AppSettings.Settings.Add("foderPath", folderPath);





            config.AppSettings.Settings["userName"].Value = userName;
            config.AppSettings.Settings["password"].Value = password;
            config.AppSettings.Settings["foderPath"].Value = folderPath;
            config.Save(ConfigurationSaveMode.Full);
            ConfigurationManager.RefreshSection("appSettings");




        }
        catch (FormatException e)
        {
            string s = e.Message;
            throw e;
        }
    }
}

Added section in the app config is
Code B:

<appSettings>
<add key="userName" value="" />
<add key="password" value="" />
<add key="foderPath" value="" />
</appSettings>

Answer 1

Thank you. We had this exact issue and could not figure out why it would not write to the file.
the only different thing I did was get the path from the Application.

string path = Application.ExecutablePath;
Configuration config = ConfigurationManager.OpenExeConfiguration(path);