private void txt_Ecardforegift_KeyPress(object sender, KeyPressEventArgs e)
{
if (e.KeyChar < '0' || e.KeyChar > '9')
{
e.Handled = true;
}
}
选择TextBox的KeyPress事件,敲入以上代码.及可.其它键盘键的限制输入参考KeyPressEventArgs MSDN解释.
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