C#中如何用colorDialog改变label的字体颜色？

我不知道colorDialog控件如何用，怎样可以改变label控件的颜色？

求详细代码？

private void button1_Click(object sender, EventArgs e)
{
    if (colorDialog1.ShowDialog() == DialogResult.OK)
    {
    label1.ForeColor = colorDialog1.Color;
    }
}

DialogResult dr = this.colorDialog1.ShowDialog();     if (dr == DialogResult.OK)     {     this.label1.BackColor = this.colorDialog1.Color;     }

    private void button1_Click(object sender, EventArgs e)     {     if (this.colorDialog1.ShowDialog(this) == DialogResult.OK)     label1.BackColor = colorDialog1.Color;     }