Tell me on which thread button1 and button2 created

I have added one button in designer.cs file and second button creating runtime on first button click. Tell me on which thread button1 and button2 created

using System;
using System.Drawing; using System.Windows.Forms;
namespace WinformTest {public partial class Form1 : Form{public Form1()
{
InitializeComponent();
//button1 added at designer.cs
}
private void button1_Click(object sender, EventArgs e)
{
//Dynamically creating button2.
Button button2 = new Button();
button2.Location = new Point(112, 33);
button2.Name = "button2";
button2.Size = new Size(78, 33);
button2.TabIndex = 1;
button2.Text = "button2";
}