Doc.Utility/ExtentMethod.cs

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using System;
using System.Collections;
using System.Collections.Generic;
using System.ComponentModel;
using System.Configuration;
using System.Data;
using System.Dynamic;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Web;
using System.Web.Script.Serialization;
using System.Web.Security;
using System.Xml;
using System.IO;

namespace Doc.Utility
{
    /// <summary>
    ///     ExtentMethod 的摘要说明
    /// </summary>
    public static class ExtentMethod
    {
        /// <summary>
        ///     生成MD5
        /// </summary>
        /// <param name="str"></param>
        /// <returns></returns>
        public static string ToMD5(this string str)
        {
            return FormsAuthentication.HashPasswordForStoringInConfigFile(str, "MD5");
        }

        /// <summary>
        /// 数据流生成MD5
        /// </summary>
        /// <param name="stream">数据流</param>
        /// <returns></returns>
        public static string GetMD5HashFromStream(this Stream stream)
        {
            try
            {
                stream.Position = 0;
                System.Security.Cryptography.MD5CryptoServiceProvider md5 = new System.Security.Cryptography.MD5CryptoServiceProvider();
                byte[] data = md5.ComputeHash(stream);
                StringBuilder sBuilder = new StringBuilder();
                for (int i = 0; i < data.Length; i++)
                {
                    sBuilder.Append(data[i].ToString("x2"));
                }
                return sBuilder.ToString();
            }
            catch
            {
                return "";
            }
        }

        /// <summary>