if (Convert.ToInt32(e.KeyChar) == 8)
{
e.Handled = false;
}
else
{
Regex rex = new Regex(@"^[0-9.]*$"); //初始化正则表达式(检测每次输入的字符)
Regex rexFull = new Regex(@"^[0-9]+(.[0-9]{0,1})?$"); //初始化正则表达式(检测所有已经输入的字符)
if (rexFull.IsMatch(this.txtMoney.Text.Trim()) || rexFull.IsMatch(this.txtMoney.Text.Trim() + e.KeyChar.ToString()))
{
if (Regex.Matches(this.txtMoney.Text.Trim() + e.KeyChar.ToString(), "\\.").Count == 2) //防止输入两个小数点
{
e.Handled = true;
}
else
{
if (!(char.IsNumber(e.KeyChar) || e.KeyChar == '\b' || e.KeyChar == (char)('.')))
{
e.Handled = true;
}
else
{
e.Handled = false;
}
}
}
else
{
e.Handled = true;
}
}