【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; } }