獲取有掩碼的銀行賬號，程式碼如下：

public static string GetMaskBankAccount(string bankAccount)
{
    if (!string.IsNullOrWhiteSpace(bankAccount))
    {
        if (bankAccount.Length >= 4)
        {
            return $"{ bankAccount.Substring(0, 4) }******{ bankAccount.Substring(bankAccount.Length - 4) }";
        }
     }
     return bankAccount ?? "";
}
 

獲取有掩碼的手機號碼，程式碼如下：

public static string GetMaskMobile(string mobile)
{
   if (mobile != null && mobile.Length >= 4)
   {
       return mobile.Substring(0, 3) + "****" + mobile.Substring(mobile.Length - 4);
   }
   return mobile ?? "";
}

獲取有掩碼的名稱，程式碼如下：

public static string GetMaskName(string name)
{
    if (name != null)
    {
        if (name.Length > 2)
        {
           return name.Substring(0, 1) + "*" + name.Substring(name.Length - 1);
        }
        else if (name.Length == 2)
        {
            return name.Substring(0, 1) + "*";
        }
    }
    return name ?? "";
}