Question

I started programming in c# for a few days ago, so I am a total newbeginner at this. Based on my experience in other languages, I found it somewhat “simple”.

I am building a system where users are logging in to my application, which is working. I want to have a “remember me”-setting where the information is stored locally. What is the best way to do this? I’ll only save the username and the password-hash.

Edit: This is a desktop-application. The login-information is sent to a php-script simply using HttpWebRequest

Answer 1

You can use the ConfigurationManager Class to manage your application’s settings.

you can use this function to add new Keys to your configuration file:

public bool setSetting(string pstrKey, string pstrValue)
{
    Configuration objConfigFile =
        ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
    bool blnKeyExists = false;

    foreach (string strKey in objConfigFile.AppSettings.Settings.AllKeys)
    {
        if (strKey == pstrKey)
        {
            blnKeyExists = true;
            objConfigFile.AppSettings.Settings[pstrKey].Value = pstrValue;
            break;
        }
    }
    if (!blnKeyExists)
    {
        objConfigFile.AppSettings.Settings.Add(pstrKey, pstrValue);
    }
    objConfigFile.Save(ConfigurationSaveMode.Modified);
    ConfigurationManager.RefreshSection("appSettings");
    return true;
}

and then save up your username (for example)

setSetting("username", usernameTextBox.Text);

Once your application starts up, you can read the information you saved earlier from your ConfigurationManager

usernameTextBox.Text = ConfigurationManager.AppSettings["username"];