C#端
using System;
using System.IO;
using System.Security.Cryptography;
namespace 计算文件的MD5值
{
class MD5_Helper
{
/// <summary>
/// 文件MD5校验
/// </summary>
/// <param name=pathName>文件绝对路径</param>
/// <returns>MD5校验码</returns>
public string getMD5Hash(string pathName)