72 lines
2.2 KiB
C#
72 lines
2.2 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Security.Cryptography;
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using System.Text;
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using System.Threading.Tasks;
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namespace Inotify.Common
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{
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public static class Extensions
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{
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static int rep = 0;
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/// <summary>
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/// MD5加密字符串（32位大写）
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/// </summary>
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/// <param name="source">源字符串</param>
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/// <returns>加密后的字符串</returns>
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public static string ToMd5(this string source)
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{
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MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();
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byte[] bytes = Encoding.UTF8.GetBytes(source);
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string result = BitConverter.ToString(md5.ComputeHash(bytes));
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return result.Replace("-", "");
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}
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public static string UrlEncode(this string str)
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{
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string urlStr = System.Web.HttpUtility.UrlEncode(str);
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return urlStr;
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}
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public static string Base64Encode(this string source)
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{
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if (string.IsNullOrEmpty(source)) return "";
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byte[] bytes = (Encoding.UTF8.GetBytes(source));
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return Convert.ToBase64String(bytes);
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}
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public static string Base64Decode(this string source)
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{
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if (string.IsNullOrEmpty(source)) return "";
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var bytes = Convert.FromBase64String(source);
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return System.Text.Encoding.Default.GetString(bytes);
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}
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public static string GenerateCheckCode(this int codeCount)
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{
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string str = string.Empty;
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long num2 = DateTime.Now.Ticks + rep;
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rep++;
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Random random = new Random(((int)(((ulong)num2) & 0xffffffffL)) | ((int)(num2 >> rep)));
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for (int i = 0; i < codeCount; i++)
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{
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char ch;
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int num = random.Next();
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if ((num % 2) == 0)
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{
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ch = (char)(0x30 + ((ushort)(num % 10)));
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}
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else
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{
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ch = (char)(0x41 + ((ushort)(num % 0x1a)));
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}
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str += ch.ToString();
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}
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return str;
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}
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}
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}
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