private void button1_Click(object sender, EventArgs e)
{
this.textBox2.Text = this.textBox1.Text.Trim('0');
this.textBox3.Text = this.textBox1.Text.TrimStart('0');
this.textBox4.Text = this.textBox1.Text.TrimEnd('0');
}
{
this.textBox2.Text = this.textBox1.Text.Trim('0');
this.textBox3.Text = this.textBox1.Text.TrimStart('0');
this.textBox4.Text = this.textBox1.Text.TrimEnd('0');
}