How save to .txt and Load from .txt configurations

Yes, you can save the configuration of checkboxes and textboxes to a .txt file and then load it from the same file. Here is an example code snippet that demonstrates how to do this, you can take reference from here:

// Save checkbox and textbox configuration to a .txt file
private void SaveToFile(Control.ControlCollection controls, string fileName)
{
    try
    {
        using (StreamWriter sw = new StreamWriter(fileName))
        {
            foreach (Control c in controls)
            {
                if (c is CheckBox)
                {
                    CheckBox cb = (CheckBox)c;
                    sw.WriteLine(cb.Name + "=" + cb.Checked);
                }
                else if (c is TextBox)
                {
                    TextBox tb = (TextBox)c;
                    sw.WriteLine(tb.Name + "=" + tb.Text);
                }
            }
        }
    }
    catch (Exception ex)
    {
        MessageBox.Show("An error occurred while saving configuration data: " + ex.Message);
    }
}

// Load checkbox and textbox configuration from a .txt file
private void LoadFromFile(Control.ControlCollection controls, string fileName)
{
    try
    {
        using (StreamReader sr = new StreamReader(fileName))
        {
            while (!sr.EndOfStream)
            {
                string line = sr.ReadLine();
                string[] parts = line.Split(new char[] { '=' }, 2);
                if (parts.Length == 2)
                {
                    Control c = controls.Find(parts[0], true).FirstOrDefault();
                    if (c != null)
                    {
                        if (c is CheckBox)
                        {
                            bool value = false;
                            if (bool.TryParse(parts[1], out value))
                            {
                                ((CheckBox)c).Checked = value;
                            }
                        }
                        else if (c is TextBox)
                        {
                            ((TextBox)c).Text = parts[1];
                        }
                    }
                }
            }
        }
    }
    catch (Exception ex)
    {
        MessageBox.Show("An error occurred while loading configuration data: " + ex.Message);
    }
}

In the SaveToFile method, it iterates over all controls in the Control.ControlCollection and writes the name and value of each CheckBox and TextBox control to the specified .txt file. In the LoadFromFile method, it reads the name and value of each control from the .txt file and updates the corresponding control in the Control.ControlCollection.