CODEWITHSUNDEEP
c#winformsapp-config
dwarf
dwarf

Reputation: 455

Change settings on all Windows Forms forms

I have changed my app.config file to allow the user to change the color scheme of the program. I can figure out how to change the background color of the form they are on where they change these settings:

Color colBackColor = Properties.Settings.Default.basicBackground;
this.BackColor = colBackColor;

But how can I change all of my forms background color? It's like I still want to pass all my forms to a function. I already asked that question and someone told me to use the app.config file. Now that I have done that, am I using it wrong?

Upvotes: 3

Views: 2697

Answers (1)

King King
King King

Reputation: 63317

It's simply that you need a base form from which all your forms in your project have to inherit:

public class FormBase : Form {
   protected override void OnLoad(EventArgs e){
    Color colBackColor = Properties.Settings.Default.basicBackground;
    BackColor = colBackColor;
   }
}
//Then all other forms have to inherit from that FormBase instead of the standard Form
public class Form1 : FormBase {
  //...
}
public class Form2 : FormBase {
  //...
}

UPDATE

public interface INotifyChangeStyle {
   void ChangeStyle();
}    
public class FormBase : Form, INotifyChangeStyle {
   protected override void OnLoad(EventArgs e){
      ChangeStyle();
   }
   public void ChangeStyle(){
      //Perform style changing here
      Color colBackColor = Properties.Settings.Default.basicBackground;
      BackColor = colBackColor;
      //--------
      foreach(var c in Controls.OfType<INotifyChangeStyle>()){
         c.ChangeStyle();
      }
   }
}
public class MyButton : Button, INotifyChangeStyle {
   public void ChangeStyle(){
      //Perform style changing here
      //....
      //--------
      foreach(var c in Controls.OfType<INotifyChangeStyle>()){
         c.ChangeStyle();
      }
   }
}
//...   the same for other control classes

Upvotes: 5

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