tools.cs

Manager the door by fingerprint machine

using System;
using System.Collections.Generic;
using System.Text;
using System.Text.RegularExpressions;
using System.Collections.Specialized;

namespace Registration
{
  class Tools
  {
    /// <summary>
    /// this function strips non-numeric values out of a string and returns the numeric content of a string.
    /// </summary>
    /// <param name="Value"></param>
    /// <returns></returns>
    public static string StripNonNumeric(string Value)
    {
      if (Value == null) return "";
      return Regex.Replace(Value, "\\D", "");
    }

    public static string StripString(string targetString)
    {
      if (targetString == null) return "";
      return Regex.Replace(targetString, @"\W*", "");
    }

    public static NameValueCollection GetValues(string sNVPairs)
    {
      String[] sbNameValuePair;
      String[] sbNameValuePairs;
      NameValueCollection m_colNVPairs = new NameValueCollection();
      //split into name-value pairs: "name=value"
      sbNameValuePairs = sNVPairs.Split('&');

      for (int i = 0; i < sbNameValuePairs.Length; i++)
      {
        //split the name value pair: var1=name, var2=value
        sbNameValuePair = sbNameValuePairs[i].Split('=');
        //decode the values and add the pair to a collection
        m_colNVPairs.Add(System.Web.HttpUtility.UrlDecode(sbNameValuePair[0]),
        System.Web.HttpUtility.UrlDecode(sbNameValuePair[1]));
      }
      return m_colNVPairs;
    }

    public static bool ValidNRIC(string ic)
    {
      string icStr = ic.ToUpper().Trim();
      string regexPattern = "S[0-9]{7}[A-Z]";

      if(icStr.Length<9)
        return false;

      if (!Regex.IsMatch(icStr.ToUpper(), regexPattern))
        return false;

      int[] weight = new int[] { 0, 2, 7, 6, 5, 4, 3, 2 };
      char[] checkDigits = new char[] { 'J', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'Z', 'J' };
      int sum = 0;
      try
      {
        for (int i = 1; i < 8; i++)
        {
          sum += int.Parse(icStr[i].ToString()) * weight[i];
        }
        sum = sum % 11;
        sum = 11 - sum;
        return (icStr[8]==checkDigits[sum]);
      }
      catch { return false; }
    }
  }
}