C# WPF Application save settings in UserControl

Question

I have a main application at this there are border different buttons. This also includes the "Einstellung" button. Pressing this button should display a different content than before. This I realized with a UserControl.

Now you can make settings in this user control and save them.

This saving I made in the Settings

and with the Code

Vorschau.Properties.Settings.Default.BreiteBitmap = Int32.Parse(tbBreiteBitmap.Text);
Vorschau.Properties.Settings.Default.HoeheBitmap = Int32.Parse(tbHoeheBitmap.Text);
Vorschau.Properties.Settings.Default.AnzahlKoordinaten = Int32.Parse(tbAnzahlKoordinaten.Text);

Now I press the "Speichern" button. He saves me the settings. I now change the UserControl, so I click on a button "Vorschau" and a new content is displayed to me. If I now click again on "Einstellung" is the content still there, as I have stored it.

But the problem comes. I close the application and I open it again. Now I click on the button "Einstellung" in the textboxes is only everywhere a 0 in it.

This should not be so, but the content should be from there in the past.

I retrieve this content when I start the application. See the code snippet.

 public UCEinstellung()
        {
            InitializeComponent();

            //Lade der Einstellungen
            tbBreiteBitmap.Text = Vorschau.Properties.Settings.Default.BreiteBitmap.ToString();
            tbHoeheBitmap.Text = Vorschau.Properties.Settings.Default.HoeheBitmap.ToString();
            tbAnzahlKoordinaten.Text = Vorschau.Properties.Settings.Default.AnzahlKoordinaten.ToString();
        }

AND

public MainWindow()
        {
            InitializeComponent();
            MouseDown += Window_MouseDown;

            einstellung.tbBreiteBitmap.Text = Vorschau.Properties.Settings.Default.BreiteBitmap.ToString();
            einstellung.tbHoeheBitmap.Text = Vorschau.Properties.Settings.Default.HoeheBitmap.ToString();
            einstellung.tbAnzahlKoordinaten.Text = Vorschau.Properties.Settings.Default.AnzahlKoordinaten.ToString();

        }

Unfortunately this does not work. I hope you can tell me where the error lies. In another application WITHOUT usercontrol works, this store and retrieve properly.

UCEinstellung

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Diagnostics;

namespace Vorschau
{
    /// 
    /// Interaktionslogik für UCEinstellung.xaml
    /// 
    public partial class UCEinstellung : UserControl
    {
        public UCEinstellung()
        {
            InitializeComponent();

            //Lade der Einstellungen
            tbBreiteBitmap.Text = Vorschau.Properties.Settings.Default.BreiteBitmap.ToString();
            tbHoeheBitmap.Text = Vorschau.Properties.Settings.Default.HoeheBitmap.ToString();
            tbAnzahlKoordinaten.Text = Vorschau.Properties.Settings.Default.AnzahlKoordinaten.ToString();
        }

        private static Boolean kontrolliereObZahl(String pText)
        {
            int zahl1;
            double zahl2;
            Boolean istZahl;
            if (Int32.TryParse(pText, out zahl1) || Double.TryParse(pText, out zahl2))
            {
                istZahl = true;
            }
            else
            {
                istZahl = false;
            }
            return istZahl;
        }

        private static Boolean textfeldRot(String pBreiteBitmap, String pHoeheBitmap, String pAnzahlKoordinaten)
        {
            Boolean istRot = true;
            if (pBreiteBitmap.Equals("61381638") || pHoeheBitmap.Equals("61381638") || pAnzahlKoordinaten.Equals("61381638"))
            {
                istRot = true;
            }
            else
            {
                istRot = false;
            }
            return istRot;
        }
        private void btSpeichern_Click(object sender, RoutedEventArgs e)
        {

                if (textfeldRot(tbBreiteBitmap.BorderBrush.GetHashCode().ToString(), tbHoeheBitmap.BorderBrush.GetHashCode().ToString(), tbAnzahlKoordinaten.BorderBrush.GetHashCode().ToString()))
                {
                    MessageBox.Show("Leider beinhalten die Eingabefelder falsche Werte.

Versuchen Sie es bitte erneut.", "Fehler", MessageBoxButton.OK, MessageBoxImage.Error);
                }
                else
                {
                    try
                    {
                        Vorschau.Properties.Settings.Default.BreiteBitmap = Int32.Parse(tbBreiteBitmap.Text);
                        Vorschau.Properties.Settings.Default.HoeheBitmap = Int32.Parse(tbHoeheBitmap.Text);
                        Vorschau.Properties.Settings.Default.AnzahlKoordinaten = Int32.Parse(tbAnzahlKoordinaten.Text);
                        MessageBox.Show("Einstellungen wurden erfolgreich abgespeichert.", "Speicherung erfolgreich", MessageBoxButton.OK, MessageBoxImage.Asterisk);
                    }
                    catch (Exception error)
                    {

                        MessageBox.Show("Unglücklicherweise trat beim Speichervorgang ein Fehler auf.

Versuchen Sie es bitte erneut.", "Fehler", MessageBoxButton.OK, MessageBoxImage.Error);
                        Debug.WriteLine("Error - beim Speichervorgang " + error);
                    }
                }            
        }

        private void tbBreiteBitmap_LostFocus(object sender, RoutedEventArgs e)
        {
            try
            {
                if (kontrolliereObZahl(tbBreiteBitmap.Text) == false)
                {
                    tbBreiteBitmap.BorderBrush = Brushes.Red;
                }
                else
                {
                    tbBreiteBitmap.BorderBrush = Brushes.LightGray;
                }
            }
            catch (Exception error)
            {
                Debug.WriteLine("Error 'tbBreitBitMap'" + error);
            }
        }

        private void tbHoeheBitmap_LostFocus(object sender, RoutedEventArgs e)
        {
            try
            {
                if (kontrolliereObZahl(tbHoeheBitmap.Text) == false)
                {
                    tbHoeheBitmap.BorderBrush = Brushes.Red;
                }
                else
                {
                    tbHoeheBitmap.BorderBrush = Brushes.LightGray;
                }
            }
            catch (Exception error)
            {
                Debug.WriteLine("Error 'tbHoeheBitmap'" + error);
            }
        }

        private void tbAnzahlKoordinaten_LostFocus(object sender, RoutedEventArgs e)
        {
            try
            {
                if (kontrolliereObZahl(tbAnzahlKoordinaten.Text) == false)
                {
                    tbAnzahlKoordinaten.BorderBrush = Brushes.Red;
                }
                else
                {
                    tbAnzahlKoordinaten.BorderBrush = Brushes.LightGray;
                }
            }
            catch (Exception error)
            {
                Debug.WriteLine("Error 'tbAnzahlKoordinaten'" + error);
            }
        }
    }
}

MainWindow

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace Vorschau
{
    /// 
    /// Interaktionslogik für MainWindow.xaml
    /// 
    public partial class MainWindow : Window
    {
        UCEinstellung einstellung = new UCEinstellung();
        UCVorschau vorschau = new UCVorschau();

        public MainWindow()
        {
            InitializeComponent();
            MouseDown += Window_MouseDown;

            einstellung.tbBreiteBitmap.Text = Vorschau.Properties.Settings.Default.BreiteBitmap.ToString();
            einstellung.tbHoeheBitmap.Text = Vorschau.Properties.Settings.Default.HoeheBitmap.ToString();
            einstellung.tbAnzahlKoordinaten.Text = Vorschau.Properties.Settings.Default.AnzahlKoordinaten.ToString();

        }

        private void Window_MouseDown(object sender, MouseButtonEventArgs e)
        {
            if (e.ChangedButton == MouseButton.Left)
                DragMove();
        }

        private void lbClose_MouseDoubleClick(object sender, MouseButtonEventArgs e)
        {
            this.Close();
        }

        private void lbMinimize_MouseDoubleClick(object sender, MouseButtonEventArgs e)
        {
            WindowState = WindowState.Minimized;
        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            lbWhereIAm.Content = "Vorschau";
            conCon.Content = vorschau;
        }

        private void btEinstellung_Click(object sender, RoutedEventArgs e)
        {
            lbWhereIAm.Content = "Einstellung";
            einstellung.tbBreiteBitmap.Text = "Test";
            conCon.Content = einstellung;
            einstellung.tbBreiteBitmap.Text = Vorschau.Properties.Settings.Default.BreiteBitmap.ToString();
            einstellung.tbHoeheBitmap.Text = Vorschau.Properties.Settings.Default.HoeheBitmap.ToString();
            einstellung.tbAnzahlKoordinaten.Text = Vorschau.Properties.Settings.Default.AnzahlKoordinaten.ToString();

        }
    }
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace Vorschau
{
    /// 
    /// Interaktionslogik für MainWindow.xaml
    /// 
    public partial class MainWindow : Window
    {
        UCEinstellung einstellung = new UCEinstellung();
        UCVorschau vorschau = new UCVorschau();

        public MainWindow()
        {
            InitializeComponent();
            MouseDown += Window_MouseDown;

            einstellung.tbBreiteBitmap.Text = Vorschau.Properties.Settings.Default.BreiteBitmap.ToString();
            einstellung.tbHoeheBitmap.Text = Vorschau.Properties.Settings.Default.HoeheBitmap.ToString();
            einstellung.tbAnzahlKoordinaten.Text = Vorschau.Properties.Settings.Default.AnzahlKoordinaten.ToString();

        }

        private void Window_MouseDown(object sender, MouseButtonEventArgs e)
        {
            if (e.ChangedButton == MouseButton.Left)
                DragMove();
        }

        private void lbClose_MouseDoubleClick(object sender, MouseButtonEventArgs e)
        {
            this.Close();
        }

        private void lbMinimize_MouseDoubleClick(object sender, MouseButtonEventArgs e)
        {
            WindowState = WindowState.Minimized;
        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            lbWhereIAm.Content = "Vorschau";
            conCon.Content = vorschau;
        }

        private void btEinstellung_Click(object sender, RoutedEventArgs e)
        {
            lbWhereIAm.Content = "Einstellung";
            einstellung.tbBreiteBitmap.Text = "Test";
            conCon.Content = einstellung;
            einstellung.tbBreiteBitmap.Text = Vorschau.Properties.Settings.Default.BreiteBitmap.ToString();
            einstellung.tbHoeheBitmap.Text = Vorschau.Properties.Settings.Default.HoeheBitmap.ToString();
            einstellung.tbAnzahlKoordinaten.Text = Vorschau.Properties.Settings.Default.AnzahlKoordinaten.ToString();

        }
    }
}

HebeleHododo · Accepted Answer

It looks like you are just assigning the properties and not saving them. You need to call the Save method

Vorschau.Properties.Settings.Default.Save();

You can find the file under %userprofile%\appdata\local after saving. See here for details.

For this to work, the scope of the setting should be "User".

C# WPF Application save settings in UserControl

Answers (1)

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