验证码机制

#region //验证码机制
public static string Secondpasswords(Label label)
{

label.Text = DateTime.Now.Millisecond.ToString();
switch (int.Parse(label.Text) / 100)
{
case 10:
label.Text = "J" + label.Text + "3";
return label.Text;
case 9:
label.Text = label.Text + "6f";
break;
case 8:
label.Text = "t" + label.Text + "C";
break;
case 7:
label.Text = "A" + label.Text + "9";
break;
case 6:
label.Text = "2" + label.Text + "B";
break;
case 5:
label.Text = "Q7" + label.Text;
break;
case 4:
label.Text = label.Text + "3l";
break;
case 3:
label.Text = "R5" + label.Text;
break;
case 2:
label.Text = "O6" + label.Text;
break;
case 1:
label.Text = "0" + label.Text + "u";
break;
case 0:
label.Text = "Z" + label.Text + "1";
break;

}
return label.Text;

}