public static string GetMD5Code(string filePath)
{
FileStream stream = null;
try
{
stream = File.OpenRead(filePath);
}
catch
{
try
{
stream.Close();
stream.Dispose();
}
catch { }
return Consts.EmptyFileMD5;
}
if (stream.Length == 0)
{
stream.Close();
stream.Dispose();
return Consts.EmptyFileMD5;
}
byte[] data = new byte[10240];
long size = stream.Length;
int sizetoread;
MD5Hash md5 = new MD5Hash();
md5.InitNewHash();
while (size != 0)
{
sizetoread = size > 10240 ? 10240 : (int)size;
stream.Read(data, 0, sizetoread);
//data = reader.ReadBytes((int)sizetoread);
size -= sizetoread;
if (size == 0)
md5.UpdateHash(data, sizetoread, true);
else
md5.UpdateHash(data, sizetoread, false);
}
stream.Close();
stream.Dispose();
md5.FinalizeHash();
return MD5Hash.FormatHash(md5.GetFinalHash(), 0, 0, 0, 1);//0��ָ0�зָ0�ظ����ٴΣ�1��д���(0Сд)myxbing
}
public static string GetMD5Code(Stream stream)
{
if (stream == null || stream.Length == 0)
return Consts.EmptyFileMD5;
//return Guid.NewGuid().ToString();
//next should be rebuilder.
//BinaryReader reader = new BinaryReader(stream);
long oldPosition = stream.Position;
stream.Position = 0;
byte[] data = new byte[10240];
long size = stream.Length;
int sizetoread;
MD5Hash md5 = new MD5Hash();
md5.InitNewHash();
while (size != 0)
{
sizetoread = size > 10240 ? 10240 : (int)size;
stream.Read(data, 0, sizetoread);
//data = reader.ReadBytes((int)sizetoread);
size -= sizetoread;
if (size == 0)
md5.UpdateHash(data, sizetoread, true);
else
md5.UpdateHash(data, sizetoread, false);
}
md5.FinalizeHash();
stream.Position = oldPosition;
//reader.Close();
//stream.Close();���ܹرգ���������
return MD5Hash.FormatHash(md5.GetFinalHash(), 0, 0, 0, 1);//0��ָ0�зָ0�ظ����ٴΣ�1��д���(0Сд)myxbing
}
