Helpers.cs
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace MWH.MyNethereum.QuickRef { static public class Helpers { public static string ConvertHex(String hexString) { try { string ascii = string.Empty; for (int i = 0; i < hexString.Length; i += 2) { String hs = string.Empty; hs = hexString.Substring(i, 2); uint decval = System.Convert.ToUInt32(hs, 16); char character = System.Convert.ToChar(decval); ascii += character; } return ascii; } catch (Exception ex) { Console.WriteLine(ex.Message); } return string.Empty; } public static DateTime UnixTimeStampToDateTime(double unixTimeStamp) { // Unix timestamp is seconds past epoch System.DateTime dtDateTime = new DateTime(1970, 1, 1, 0, 0, 0, 0, System.DateTimeKind.Utc); dtDateTime = dtDateTime.AddSeconds(unixTimeStamp); // .ToLocalTime(); return dtDateTime; } public static DateTime JavaTimeStampToDateTime(double javaTimeStamp) { // Java timestamp is milliseconds past epoch System.DateTime dtDateTime = new DateTime(1970, 1, 1, 0, 0, 0, 0, System.DateTimeKind.Utc); dtDateTime = dtDateTime.AddMilliseconds(javaTimeStamp); // .ToLocalTime(); return dtDateTime; } } }以下是用于实施这些示例时使用的以太坊合约的Solidity代码：