How to update and persist a settings value

Question

I want to change a string value in the project settings at run time in such a way that it will persist till the next execution. It seems to be impossible. Is that correct?

Answer 1

Hi MarcGraham-7285
You can update and save the settings via following code:

 Properties.Settings.Default.Test = "HI";  
    Properties.Settings.Default.Save();  

Here is a related document.
Best Regards,
Daniel Zhang

---

If the response is helpful, please click "Accept Answer" and upvote it.

Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

Answer 2

The following I've created two settings.

Two TextBox controls

Data bind via selecting a TextBox, select the following

Code for a form with the two TextBoxes

namespace WindowsFormsApp1  
{  
    public partial class Form1 : Form  
    {  
        public Form1()  
        {  
            InitializeComponent();  
            Closing += OnClosing;  
        }  
  
        private void OnClosing(object sender, CancelEventArgs e)  
        {  
            Properties.Settings.Default.Save();  
        }  
    }  
}  
  

Now if we added the following code it still works

private void button1_Click(object sender, EventArgs e)  
{  
    Properties.Settings.Default.FirstName = "Jane";  
}  

If the above does not work for you there is something else unknown to us that is causing this to happen. Personally I never use Settings but instead a completely different method.