private void textBox1_KeyPress(object sender , System.Windows.Forms.KeyPressEventArgs e)
{
if ((e.KeyChar < 48 || e.KeyChar > 57) && e.KeyChar != 8 & e.KeyChar != 13 )
{
e.Handled = true ;
}
else if (e.KeyChar == 13)//e.KeyChar表示回车鉴
{
TextBox hb = (TextBox)sender ;
if (hb.Text.Length > 0)

AppleTextSize(hb.Text) ;

e.Handled = true ;
this.richTextBox1.Focus () ;
}
}
中的e.Handled是什么意思

谢谢。