using System;
using System.Runtime.InteropServices;

namespace HNFS.pjcx
{
	/// <summary>
	/// VerifyCode 的摘要說明。
	/// </summary>
	public class VerifyCode
	{
		[DllImport("VerifyCode.dll", EntryPoint="getBillNumVerifyCode")] 
  　	public static extern string getBillNumVerifyCode(String PChar); 

		public VerifyCode()
		{
		}

		/// <summary>
		/// 獲取一般繳款書號碼驗證碼。比如票號000000001X；則傳入參數000000001；返回值是X；
		/// </summary>
		/// <param name="ph">繳款書號碼的前9位數字</param>
		/// <returns></returns>
		public static string getBillVerifyCode(string ph)
		{
			return getBillNumVerifyCode(ph);
		}

		public static bool IsAuthenticBill(string billNum)
		{
			if(billNum.Length!=10)
			{
				return false;
			}
			string temp=billNum.Substring(0,9);
			string temp2=billNum.Substring(9,1);
			if(VerifyCode.getBillVerifyCode(temp).ToUpper().Equals(temp2.ToUpper()))
			{
				return true;
			}
			else
			{
				return false;
			}
		}
	}
}