【WinForm】TextBox只能输入中文，英文，数字，不允许输入特殊字符

 

private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
{
    Regex rg = new Regex("^[\u4e00-\u9fa5a-zA-Z0-9\b]$"); 
    if (!rg.IsMatch(e.KeyChar.ToString()))
    {
        e.Handled = true;
    }
}