字符串操作类 NET代码积累之一
在日常的工作中积累了大量的代码,这些代码能帮我们快速的完成开发工作.
这就是程序员代码积累,你可以将这些代码Ctrl + C 然后 Ctrl + V 便可以完成开发工作,效率是不是可以上去呢.?
我在这里抛块砖头,希望大家也在园子里多发一些自己积累的代码,起码方便各位同仁在工作学习的时候方便些
哈哈,如果觉得有用的话就顶顶哈~~~
using System;
using System.IO;
using System.Collections.Generic;
using System.Text;
using System.Web.Security;
using System.Security.Cryptography;
using System.Text.RegularExpressions;
using Com.PiZiZai.FunctionControl.PiZiZaiData;
namespace Com.PiZiZai.FunctionControl.PiZiZaiString
{
/// <summary>
/// 字符串操作静态类
/// </summary>
public static class StringOperate
{
#region 用正则表达式对字符串进行验证
/// <summary>
/// 用正则表达式对字符串进行验证
/// </summary>
/// <param name="str">被验证的字符串</param>
/// <param name="i">序号:1,正整数和0;2,非负数;3,0到99之间的整数;4,中文字符;5,密码至少6个字符，可使用字母、数字及下划线！</param>
/// <returns>返回出错语句,如为""则验正通过</returns>
public static string InputValidate(string str, int i)
{
if (i == 0)
{
return "";
}
string exp = "", tip = "";
switch (i)
{
case 1:
exp = @"^\d+$"; //正整数和0
tip = "只能输入正整数和0";
break;
case 2:
exp = @"^\d+(\.\d+)?$"; //非负数
tip = "只能输入非负数";
break;
case 3:
exp = @"^(\d|[1-9]\d)$"; //0到99之间的整数
tip = "只能输入0到99之间的整数";
break;
case 4:
exp = @"[\u4e00-\u9fa5]"; //中文字符
tip = "只能输入中文字符";
break;
case 5:
exp = @"^\w{6,}$";
tip = "密码至少6个字符，可使用字母、数字及下划线！";
break;
default:
exp = "";
tip = "";
break;
}
if (Regex.IsMatch(str, exp))
{
return "";
}
else
{
return tip;
}
}
#endregion
#region 判断是否是数字
/// <summary>
/// 判断是否是数字
/// </summary>
/// <param name="str">字符串</param>
/// <returns>全数字返回True,若有某个值不为数字返回False</returns>
public static bool IsNumeric(string str)
{
if (str == null || str.Length == 0)
return false;
System.Text.ASCIIEncoding ascii = new System.Text.ASCIIEncoding();
byte[] bytestr = ascii.GetBytes(str);
foreach (byte c in bytestr)
{
if (c < 48 || c > 57)
{
return false;
}
}
return true;
}
#endregion
#region 字符串直接MD5加密
/// <summary>
/// 字符串直接MD5加密
/// </summary>
/// <param name="str">需加密的字符串</param>
/// <returns>md5加密后的密码</returns>
public static string StringToMD5(string str)
{
return FormsAuthentication.HashPasswordForStoringInConfigFile(str,"MD5").ToLower();
}
#endregion
#region 字符串转换小写后MD5加密
/// <summary>
/// 字符串转换小写后MD5加密
/// </summary>
/// <param name="psw">密码明码</param>
/// <returns>md5加密后的密码</returns>
public static string stringToMD5(string str)
{
str = str.ToLower();
return FormsAuthentication.HashPasswordForStoringInConfigFile(str,"MD5").ToLower();
}
#endregion
#region 字符串直接SHA1加密
/// <summary>
/// 字符串直接SHA1加密
/// </summary>
/// <param name="str">需加密的字符串</param>
/// <returns>SHA1加密后的密码</returns>
public static string StringToSHA1(string str)
{
return FormsAuthentication.HashPasswordForStoringInConfigFile(str, "SHA1").ToLower();
}
#endregion
#region 字符串转换小写后SHA1加密
/// <summary>
/// 字符串转换小写后SHA1加密
/// </summary>
/// <param name="psw">密码明码</param>
/// <returns>SHA1加密后的密码</returns>
public static string stringToSHA1(string str)
{
str = str.ToLower();
return FormsAuthentication.HashPasswordForStoringInConfigFile(str, "SHA1");
}
#endregion
#region 默认密钥向量 DES加密解密用
/// <summary>
/// 默认密钥向量
/// </summary>
private static byte[] Keys = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };
#endregion
#region DES加密字符串，需设置加密密钥,要求为8位
/// <summary>
/// DES加密字符串，需设置加密密钥,要求为8位
/// </summary>
/// <param name="encryptString">待加密的字符串</param>
/// <param name="encryptKey">加密密钥,要求为8位</param>
/// <returns>加密成功返回加密后的字符串，失败返回源串</returns>
public static string EncryptDES(string encryptString, string encryptKey)
{
try
{
byte[] rgbKey = Encoding.UTF8.GetBytes(encryptKey.Substring(0, 8));
byte[] rgbIV = Keys;
byte[] inputByteArray = Encoding.UTF8.GetBytes(encryptString);
DESCryptoServiceProvider dCSP = new DESCryptoServiceProvider();
MemoryStream mStream = new MemoryStream();
CryptoStream cStream = new CryptoStream(mStream, dCSP.CreateEncryptor(rgbKey, rgbIV), CryptoStreamMode.Write);
cStream.Write(inputByteArray, 0, inputByteArray.Length);
cStream.FlushFinalBlock();
return Convert.ToBase64String(mStream.ToArray());
}
catch
{
return encryptString;
}
}
#endregion
#region DES解密字符串,需加密时的密钥,要求为8位
/// <summary>
/// DES解密字符串,需加密时的密钥,要求为8位
/// </summary>
/// <param name="decryptString">待解密的字符串</param>
/// <param name="decryptKey">解密密钥,要求为8位,和加密密钥相同</param>
/// <returns>解密成功返回解密后的字符串，失败返源串</returns>
public static string DecryptDES(string decryptString, string decryptKey)
{
try
{
byte[] rgbKey = Encoding.UTF8.GetBytes(decryptKey);
byte[] rgbIV = Keys;
byte[] inputByteArray = Convert.FromBase64String(decryptString);
DESCryptoServiceProvider DCSP = new DESCryptoServiceProvider();
MemoryStream mStream = new MemoryStream();
CryptoStream cStream = new CryptoStream(mStream, DCSP.CreateDecryptor(rgbKey, rgbIV), CryptoStreamMode.Write);
cStream.Write(inputByteArray, 0, inputByteArray.Length);
cStream.FlushFinalBlock();
return Encoding.UTF8.GetString(mStream.ToArray());
}
catch
{
return decryptString;
}
}
#endregion
#region "按当前日期和时间生成随机数"
/// <summary>
/// 按当前日期和时间生成随机数
/// </summary>
/// <param name="Num">附加随机数长度</param>
/// <returns></returns>
public static string sRndNum(int Num)
{
string sTmp_Str = System.DateTime.Today.Year.ToString() + System.DateTime.Today.Month.ToString("00") + System.DateTime.Today.Day.ToString("00") + System.DateTime.Now.Hour.ToString("00") + System.DateTime.Now.Minute.ToString("00") + System.DateTime.Now.Second.ToString("00");
return sTmp_Str + RndNum(Num);
}
#endregion
#region 生成0-9随机数
/// <summary>
/// 生成0-9随机数
/// </summary>
/// <param name="VcodeNum">生成长度</param>
/// <returns></returns>
public static string RndNum(int VcodeNum)
{
StringBuilder sb = new StringBuilder(VcodeNum);
Random rand = new Random();
for (int i = 1; i < VcodeNum + 1; i++)
{
int t = rand.Next(9);
sb.AppendFormat("{0}", t);
}
return sb.ToString();
}
#endregion
#region "通过RNGCryptoServiceProvider 生成随机数 0-9"
/// <summary>
/// 通过RNGCryptoServiceProvider 生成随机数 0-9
/// </summary>
/// <param name="length">随机数长度</param>
/// <returns></returns>
public static string RndNumRNG(int length)
{
byte[] bytes = new byte[16];
RNGCryptoServiceProvider r = new RNGCryptoServiceProvider();
StringBuilder sb = new StringBuilder(length);
for (int i = 0; i < length; i++)
{
r.GetBytes(bytes);
sb.AppendFormat("{0}", (int)((decimal)bytes[0] / 256 * 10));
}
return sb.ToString();
}
#endregion
#region "转换编码"
/// <summary>
/// 转换编码
/// </summary>
/// <param name="str"></param>
/// <returns></returns>
public static string Encode(string str)
{
if (str == null)
{
return "";
}
else
{
return System.Web.HttpUtility.UrlEncode(Encoding.GetEncoding(54936).GetBytes(str));
}
}
#endregion
#region "按字符串位数补0"
/// <summary>
/// 按字符串位数补0
/// </summary>
/// <param name="CharTxt">字符串</param>
/// <param name="CharLen">字符长度</param>
/// <returns></returns>
public static string FillZero(string CharTxt, int CharLen)
{
if (CharTxt.Length < CharLen)
{
StringBuilder sb = new StringBuilder();
for (int i = 0; i < CharLen - CharTxt.Length; i++)
{
sb.Append("0");
}
sb.Append(CharTxt);
return sb.ToString();
}
else
{
return CharTxt;
}
}
#endregion
#region "替换JS中特殊字符"
/// <summary>
/// 将JS中的特殊字符替换
/// </summary>
/// <param name="str">要替换字符</param>
/// <returns></returns>
public static string ReplaceJs(string str)
{
if (str != null)
{
str = str.Replace("\"", """);
str = str.Replace("(", "(");
str = str.Replace(")", ")");
str = str.Replace("%", "%");
}
return str;
}
#endregion
#region "正式表达式验证"
/// <summary>
/// 正式表达式验证
/// </summary>
/// <param name="C_Value">验证字符</param>
/// <param name="C_Str">正式表达式</param>
/// <returns>符合true不符合false</returns>
public static bool CheckRegEx(string C_Value, string C_Str)
{
Regex objAlphaPatt;
objAlphaPatt = new Regex(C_Str, RegexOptions.Compiled);
return objAlphaPatt.Match(C_Value).Success;
}
#endregion
#region "检测是否为有效邮件地址格式"
/// <summary>
/// 检测是否为有效邮件地址格式
/// </summary>
/// <param name="strIn">输入邮件地址</param>
/// <returns></returns>
public static bool IsValidEmail(string strIn)
{
return Regex.IsMatch(strIn, @"^([\w-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([\w-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$");
}
#endregion
#region "产生GUID"
/// <summary>
/// 获取一个GUID的HashCode
/// </summary>
public static int GetGUIDHashCode
{
get
{
return GetGUID.GetHashCode();
}
}
/// <summary>
/// 获取一个GUID字符串
/// </summary>
public static string GetGUID
{
get
{
return Guid.NewGuid().ToString();
}
}
#endregion
}
}
痞子再
同样,您也可以将我的代码 Ctrl + C 然后 Ctrl + V 别忘了帮我顶下啦