C # Implementation example of fetching file MD5 value _c# Tutorial

Objective

MD5 is a common way of encryption, relatively stable, but also a way to verify the file, this article introduces the use of C # to get file MD5 value of the method, directly use can be used to compare the file is the same. Here's a few words to say, look at the sample code

The sample code is as follows:

<summary>
    ///Get file MD5 value
    ///</summary>
    ///<param name= "fileName" > File absolute path </param >
    ///<returns>md5 value </returns> public
    static string Getmd5hashfromfile (String fileName)
    {
      Try
      {
        FileStream file = new FileStream (FileName, FileMode.Open);
        System.Security.Cryptography.MD5 MD5 = new System.Security.Cryptography.MD5CryptoServiceProvider ();
        byte[] RetVal = md5.computehash (file);
        File. Close ();

        StringBuilder sb = new StringBuilder ();
        for (int i = 0; i < retval.length i++)
        {
          sb. Append (Retval[i]. ToString ("X2"));
        }
        Return SB. ToString ();
      }
      catch (Exception ex)
      {
        throw new Exception ("Getmd5hashfromfile () Fail,error:" + ex. message);
      }
    

Summarize

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