标签：数字 char arp for form sharp false led key
if (!(e.KeyChar >= ‘0‘ && e.KeyChar <= ‘9‘ || e.KeyChar == ‘.‘))
e.Handled = true;
if (e.KeyChar == ‘\b‘)
e.Handled = false;
标签：数字 char arp for form sharp false led key
原文地址：https://www.cnblogs.com/baissy/p/11724062.html
