怎么实现让maskedtextbox里只能输入数字和 a-f之间的字母,为什么下面这段代码在这里无效?求高手解答
private void maskedTextBox1_KeyPress(object sender, KeyPressEventArgs e) {
if ((e.KeyChar >= '0' && e.KeyChar <= '9') || (e.KeyChar >= 'A' && e.KeyChar <= 'F') || (e.KeyChar >= 'a' && e.KeyChar <= 'f') || ((Keys)(e.KeyChar) == Keys.Back))
{ e.Handled = false;
}
else
{
e.Handled = true;
return;
}
}
private void maskedTextBox1_KeyPress(object sender, KeyPressEventArgs e) {
if ((e.KeyChar >= '0' && e.KeyChar <= '9') || (e.KeyChar >= 'A' && e.KeyChar <= 'F') || (e.KeyChar >= 'a' && e.KeyChar <= 'f') || ((Keys)(e.KeyChar) == Keys.Back))
{ e.Handled = false;
}
else
{
e.Handled = true;
return;
}
}
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