Csharp/CSharp Tutorial/GUI Windows Forms/Control Relation

Ambient Properties

using System;
using System.Drawing;
using System.Windows.Forms;
public class ControlAmbientProperties : Form
{
  public ControlAmbientProperties()
  {
    BackColor = Color.Green;
    ForeColor = Color.Yellow;
    Button btn = new Button();
    btn.Location = new Point(50,50);
    btn.Size = new Size(100,23);
    btn.Text = "Relationships";
    btn.Parent = this;
    Label lbl = new Label();
    lbl.Text = "Ambient Properties";
    lbl.Parent = this;
      MessageBox.Show("Button Parent:  " + btn.Parent.ToString() + "\n" +
      "Button HasChildren:  " + btn.HasChildren.ToString() + "\n" + 
      "TopLevelControl:  " + btn.TopLevelControl.ToString() + "\n" + 
      "Form HasChildren:  " + this.HasChildren.ToString() + "\n" + 
      "Form Controls Count:  " + this.Controls.Count.ToString(),
      "Button Relationships");
  }
  static void Main() 
  {
    Application.Run(new ControlAmbientProperties());
  }
}

Control Parent and Child relation

using System;
using System.Drawing;
using System.Windows.Forms;
public class ControlParent : Form
{
  private Button btn;
  public ControlParent()
  {
    btn = new Button();
    btn.Location = new Point(50,50);
    btn.Size = new Size(100,23);
    btn.Text = "Relationships";
        //Controls.Add(btn);
    btn.Parent = this;
    MessageBox.Show("Button Parent:  " + btn.Parent.ToString() + "\n" +
      "Button HasChildren:  " + btn.HasChildren.ToString() + "\n" + 
      "TopLevelControl:  " + btn.TopLevelControl.ToString() + "\n" + 
      "Form HasChildren:  " + this.HasChildren.ToString() + "\n" + 
      "Form Controls Count:  " + this.Controls.Count.ToString(),
      "Button Relationships");
  }
  static void Main() 
  {
    Application.Run(new ControlParent());
  }
}