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   源码介绍

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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace MD5校正工具
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void btnOpenFile_Click(object sender, EventArgs e)
        {
            using (OpenFileDialog dialog = new OpenFileDialog())
            {

                if (dialog.ShowDialog() == DialogResult.OK)
                {

                    String fileName = dialog.FileName;

                    this.txtMD5.Text = "";

                    //this.txtSH1.Text = "";

                    //

                    this.txtMD5.Text = getMD5Hash(fileName);

                    //this.txtSH1.Text = GetMD5Hash(fileName);

                }

            }

        }

        //计算文件的MD5码

        private string getMD5Hash(string pathName)

        {

            string strResult = "";

            string strHashData = "";

 

            byte[] arrbytHashValue;

            System.IO.FileStream oFileStream = null;

 

            System.Security.Cryptography.MD5CryptoServiceProvider oMD5Hasher =

                       new System.Security.Cryptography.MD5CryptoServiceProvider();

 

            try

            {

                oFileStream = new System.IO.FileStream(pathName, System.IO.FileMode.Open,

                      System.IO.FileAccess.Read, System.IO.FileShare.ReadWrite) ;

                arrbytHashValue = oMD5Hasher.ComputeHash(oFileStream);//计算指定Stream 对象的哈希值

                oFileStream.Close();

                //由以连字符分隔的十六进制对构成的String，其中每一对表示value 中对应的元素；例如“F-2C-4A”

                strHashData = System.BitConverter.ToString(arrbytHashValue);

                //替换-

                strHashData = strHashData.Replace("-", "");

                strResult = strHashData;

            }

            catch (System.Exception ex)

            {

                MessageBox.Show(ex.Message);

            }

 

            return strResult;
        }
    }
}