c# 计算md5

using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Security.Cryptography;
using System.Text;

public class MD5Util
{
    
    
    public static string getMd5OfFile(string filePath)
    {
    
    
        String filemd5 = null;
        try
        {
    
    
            using (var fileStream = File.OpenRead(filePath))
            {
    
    
                var md5 = MD5.Create();
                var fileMD5Bytes = md5.ComputeHash(fileStream);
                filemd5 = BitConverter.ToString(fileMD5Bytes).Replace("-", "").ToLower();
            }
        }
        catch
        {
    
    
            //
        }

        return filemd5;
    }

    public static string getMd5OfString(String tStr)
    {
    
    
        MD5 md5Hash = MD5.Create();
        // 将输入字符串转换为字节数组并计算哈希数据
        byte[] data = md5Hash.ComputeHash(Encoding.UTF8.GetBytes(tStr));
        // 创建一个 Stringbuilder 来收集字节并创建字符串
        StringBuilder sBuilder = new StringBuilder();
        // 循环遍历哈希数据的每一个字节并格式化为十六进制字符串
        for (int i = 0; i < data.Length; i++)
        {
    
    
            sBuilder.Append(data[i].ToString("x2"));
        }

        // 返回十六进制字符串
        return sBuilder.ToString();
    }
}