时间：2020-11-18 01:19:15 | 栏目：.NET代码 | 点击：次
如下所示：
String subStr=phone.Substring(3,4);
oldcellphone.Text = phone.Replace(subStr,"****");
/// <summary>
/// 替换手机号中间四位为*
/// </summary>
/// <param name="phoneNo"></param>
/// <returns></returns>
protected string ReturnPhoneNO(string phoneNo)
{
Regex re = new Regex("(\\d{3})(\\d{4})(\\d{4})", RegexOptions.None);
phoneNo = re.Replace(phoneNo, "$1****$3");
return phoneNo;
}