private void tbox_keypress(object sender, keypresseventargs e)
catch}}
private void textbox_keypress(object sender, keypresseventargs e)
}或者private void textbox_keypress(object sender, keypresseventargs e)
}private void textbox1_keypress(object sender, system.windows.forms.keypresseventargs e)}}
private void button1_click(object sender, eventargs e)
private void textbox1_validating(object sender, canceleventargs e)
else
errorprovider1.seterror((control)sender, null);
}private void textbox1_keypress(object sender, system.windows.forms.keypresseventargs e)
if(!((e.keychar>=48 && e.keychar<=57) || e.keychar=='.' || e.keychar==8))
private void tbx_lsregcapital_keypress(object sender, keypresseventargs e)
else if (char.ispunctuation(e.keychar))
if (textbox1.text.lastindexof('.') != -1)
}
}利用ascii碼處理辦法、
TextBox只能輸入數字的驗證
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