C#

private static LogWindow LogWindow  = new LogWindow();

public static void LogUpdater(string stringUpdate)
        {
            LogWindow.LogTextBox.Text += stringUpdate + "\r\n";
        }

public string TheText { get; set; } = "Bound value";

private void UxOK_Click( object sender, RoutedEventArgs e ) {

   Window log = new Window();

   TextBlock tb = new TextBlock();
   tb.FontSize = 24;

   log.Content = tb;

   // #1.
   //tb.Inlines.Add( new Run( "Hello " ) );
   //tb.Inlines.Add( new Run( "World!" ) { FontStyle = FontStyles.Italic } );

   // #2.
   tb.Text += "Good" + Environment.NewLine;
   tb.Text += "Bye";

   // #3
   //this.TheText = "Foo" + Environment.NewLine + "bar";
   //tb.SetBinding( TextBlock.TextProperty, new Binding( nameof( this.TheText ) ) );
   //log.DataContext = this;

   //
   log.Show();
}

_Q12_ wrote:

If i have a game let's say, when the character stays and I want him to look like it's breathing, this property should be inside the class? or outside, letting me choose when to breathe, how much, how long, how fast,etc. It's just an example.

_Q12_ wrote:

Both ways are good!

Bastard Programmer from Hell
If you can't read my code, try converting it here[^]
"If you just follow the bacon Eddy, wherever it leads you, then you won't have to think about politics." -- Some Bell.

public Dictionary<string, Control> ControlDict;

private void SubClassOfBaseUserControl_Load(object sender, t[EventArgs e)
{
    ControlDict = this.Controls.FindAll();

    // assuming 'button1 is a valid name for a Control on the UserControl
    ControlDict["button1"].Text - "changed."
}

using System.Collections.Generic;
using System.Linq;
using System.Windows.Forms;

namespace YourNameSpace
{
    public static class ControlExtensions
    {
        public static Dictionary<string, Control> FindAll(this Control.ControlCollection controls, bool recurse = true)
        {
            if (recurse)
            {
                return GetAllControls(controls).ToDictionary(c => c.Name, c => c); ;
            }
            else
            {
                return controls.Cast<Control>()
                    .ToDictionary(c => c.Name, c => c);
            }
        }

        public static IEnumerable<Control> GetAllControls(Control.ControlCollection controls)
        {
            Stack<Control> stack = new Stack<Control>(controls.Cast<Control>().ToArray());

            while (stack.Any())
            {
                var nextControl = stack.Pop();

                foreach (Control childControl in nextControl.Controls)
                {
                    stack.Push(childControl);
                }

                yield return nextControl;
            }
        }
    }
}

pkfox wrote:

did you ever find a way of visually removing controls

ControlDict = this.Controls.FindAll();

Control theButton = ControlDict["button1"];

theButton.BackColor = Color.FromArgb(255, 230, 0);

theButton.Location = new Point(0, 0);

theButton.Hide();

// in practice I'd wrap this in a try/catch for safety, and handle any errors
ControlDict.Remove(theButton.Text);

theButton.Parent.Controls.Remove(theButton);

using System.ComponentModel;
using System.Windows.Forms.Design;

namespace YourNameSpace
{
    public class TestControlDesigner : ParentControlDesigner
    {
        public override void Initialize(IComponent component)
        {
            base.Initialize(component);

            if (Control is InheritedPanel)
                EnableDesignMode((InheritedPanel) Control, Control.Name);
            else if (Control is InheritedPanelHost) EnableDesignMode((InheritedPanelHost) Control, Control.Name);
        }
    }
}

using System.ComponentModel;
using System.Windows.Forms;

namespace YourNameSpace
{
    [Designer(typeof(TestControlDesigner))]
    public partial class InheritedPanel : UserControl
    {
        public InheritedPanel()
        {
            InitializeComponent();
        }
    }
}

using System.ComponentModel;
using System.Windows.Forms;

namespace YourNameSpace
{
    [Designer(typeof(TestControlDesigner))]
    public partial class PanelBase : UserControl
    {
        public PanelBase()
        {
            InitializeComponent();
        }

        [Category("Appearance")]
        [DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
        public TreeView TV { get; private set; }

        [Category("Appearance")]
        [DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
        public Panel TopPanel { get; private set; }

        [Category("Appearance")]
        [DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
        public Panel LowerPanel { get; private set; }

        public void setPanelLabel(string s)
        {
            label1.Text = s;
        }

        private void PanelBase_Load(object sender, EventArgs e)
        {
            // set TV, TopPanel, LowerPanel, Properties to actual Controls
        }
    }
}