How to determine whether two files are the same file (code)

The content of this article is about how to determine whether two files are the same file (code). It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.

Obtain the hash value comparison and judgment of the file through the System.Security.Cryptography.HashAlgorithm hash algorithm

public static bool CompareFile(string filePath1, string filePath2)
        {
            //计算第一个文件的哈希值
            HashAlgorithm hash = HashAlgorithm.Create();
            var stream_1 = new System.IO.FileStream(filePath1, System.IO.FileMode.Open);
            byte[] hashByte_1 = hash.ComputeHash(stream_1);
            stream_1.Close();
            //计算第二个文件的哈希值
            var stream_2 = new System.IO.FileStream(filePath2, System.IO.FileMode.Open);
            byte[] hashByte_2 = hash.ComputeHash(stream_2);
            stream_2.Close();
            return BitConverter.ToString(hashByte_1) == BitConverter.ToString(hashByte_2);
        }

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