【C#公共帮助类】 ToolsHelper帮助类

这个帮助类，目前我们只用到了两个，我就先更新这两个，后面有用到的，我会继续更新这个Helper帮助类

在Tools.cs中 有很多方法 跟Utils里是重复的，而且Utils里的方法更加新一点，大家可以删除Tools.cs里重复的，我只是删除了部分重复的。

RegexHelper

using System.Text.RegularExpressions;

namespace Common
{
    /// <summary>
    /// 操作正则表达式的公共类
    /// </summary>    
    public class RegexHelper
    {
        #region 验证输入字符串是否与模式字符串匹配
        /// <summary>
        /// 验证输入字符串是否与模式字符串匹配，匹配返回true
        /// </summary>
        /// <param name="input">输入字符串</param>
        /// <param name="pattern">模式字符串</param>        
        public static bool IsMatch(string input, string pattern)
        {
            return IsMatch(input, pattern, RegexOptions.IgnoreCase);
        }

        /// <summary>
        /// 验证输入字符串是否与模式字符串匹配，匹配返回true
        /// </summary>
        /// <param name="input">输入的字符串</param>
        /// <param name="pattern">模式字符串</param>
        /// <param name="options">筛选条件</param>
        public static bool IsMatch(string input, string pattern, RegexOptions options)
        {
            return Regex.IsMatch(input, pattern, options);
        }
        #endregion
    }
}

Tools

using System;
using System.Text;
using System.Text.RegularExpressions;
using System.Collections.Generic;
using System.Reflection;
using System.Web;
using System.Web.Mvc;
using System.ComponentModel;

namespace Common
{
    /// <summary>
    /// 功能描述：共用工具类
    /// </summary>
    public static class Tools
    {
           
        #region 得到字符串长度，一个汉字长度为2
        /// <summary>
        /// 得到字符串长度，一个汉字长度为2
        /// </summary>
        /// <param name="inputString">参数字符串</param>
        /// <returns></returns>
        public static int StrLength(string inputString)
        {
            System.Text.ASCIIEncoding ascii = new System.Text.ASCIIEncoding();
            int tempLen = 0;
            byte[] s = ascii.GetBytes(inputString);
            for (int i = 0; i < s.Length; i++)
            {
                if ((int)s[i] == 63)
                    tempLen += 2;
                else
                    tempLen += 1;
            }
            return tempLen;
        }
        #endregion

        #region 截取指定长度字符串
        /// <summary>
        /// 截取指定长度字符串
        /// </summary>
        /// <param name="inputString">要处理的字符串</param>
        /// <param name="len">指定长度</param>
        /// <returns>返回处理后的字符串</returns>
        public static string ClipString(string inputString, int len)
        {
            bool isShowFix = false;
            if (len % 2 == 1)
            {
                isShowFix = true;
                len--;
            }
            System.Text.ASCIIEncoding ascii = new System.Text.ASCIIEncoding();
            int tempLen = 0;
            string tempString = "";
            byte[] s = ascii.GetBytes(inputString);
            for (int i = 0; i < s.Length; i++)
            {
                if ((int)s[i] == 63)
                    tempLen += 2;
                else
                    tempLen += 1;

                try
                {
                    tempString += inputString.Substring(i, 1);
                }
                catch
                {
                    break;
                }

                if (tempLen > len)
                    break;
            }

            byte[] mybyte = System.Text.Encoding.Default.GetBytes(inputString);
            if (isShowFix && mybyte.Length > len)
                tempString += "…";
            return tempString;
        }
        #endregion

        #region 获得两个日期的间隔
        /// <summary>
        /// 获得两个日期的间隔
        /// </summary>
        /// <param name="DateTime1">日期一。</param>
        /// <param name="DateTime2">日期二。</param>
        /// <returns>日期间隔TimeSpan。</returns>
        public static TimeSpan DateDiff(DateTime DateTime1, DateTime DateTime2)
        {
            TimeSpan ts1 = new TimeSpan(DateTime1.Ticks);
            TimeSpan ts2 = new TimeSpan(DateTime2.Ticks);
            TimeSpan ts = ts1.Subtract(ts2).Duration();
            return ts;
        }
        #endregion

        #region 格式化日期时间
        /// <summary>
        /// 格式化日期时间
        /// </summary>
        /// <param name="dateTime1">日期时间</param>
        /// <param name="dateMode">显示模式</param>
        /// <returns>0-9种模式的日期</returns>
        public static string FormatDate(DateTime dateTime1, string dateMode)
        {
            switch (dateMode)
            {
                case "0":
                    return dateTime1.ToString("yyyy-MM-dd");
                case "1":
                    return dateTime1.ToString("yyyy-MM-dd HH:mm:ss");
                case "2":
                    return dateTime1.ToString("yyyy/MM/dd");
                case "3":
                    return dateTime1.ToString("yyyy年MM月dd日");
                case "4":
                    return dateTime1.ToString("MM-dd");
                case "5":
                    return dateTime1.ToString("MM/dd");
                case "6":
                    return dateTime1.ToString("MM月dd日");
                case "7":
                    return dateTime1.ToString("yyyy-MM");
                case "8":
                    return dateTime1.ToString("yyyy/MM");
                case "9":
                    return dateTime1.ToString("yyyy年MM月");
                default:
                    return dateTime1.ToString();
            }
        }
        #endregion

        #region 得到随机日期
        /// <summary>
        /// 得到随机日期
        /// </summary>
        /// <param name="time1">起始日期</param>
        /// <param name="time2">结束日期</param>
        /// <returns>间隔日期之间的 随机日期</returns>
        public static DateTime GetRandomTime(DateTime time1, DateTime time2)
        {
            Random random = new Random();
            DateTime minTime = new DateTime();
            DateTime maxTime = new DateTime();

            System.TimeSpan ts = new System.TimeSpan(time1.Ticks - time2.Ticks);

            // 获取两个时间相隔的秒数
            double dTotalSecontds = ts.TotalSeconds;
            int iTotalSecontds = 0;

            if (dTotalSecontds > System.Int32.MaxValue)
            {
                iTotalSecontds = System.Int32.MaxValue;
            }
            else if (dTotalSecontds < System.Int32.MinValue)
            {
                iTotalSecontds = System.Int32.MinValue;
            }
            else
            {
                iTotalSecontds = (int)dTotalSecontds;
            }


            if (iTotalSecontds > 0)
            {
                minTime = time2;
                maxTime = time1;
            }
            else if (iTotalSecontds < 0)
            {
                minTime = time1;
                maxTime = time2;
            }
            else
            {
                return time1;
            }

            int maxValue = iTotalSecontds;

            if (iTotalSecontds <= System.Int32.MinValue)
                maxValue = System.Int32.MinValue + 1;

            int i = random.Next(System.Math.Abs(maxValue));

            return minTime.AddSeconds(i);
        }
        /// <summary>
        /// 获取时间戳
        /// </summary>
        public static string GetRandomTimeSpan()
        {
            TimeSpan ts = DateTime.Now - new DateTime(1970, 1, 1, 0, 0, 0, 0);
            return Convert.ToInt64(ts.TotalSeconds).ToString();
        }
        #endregion

        #region HTML转行成TEXT
        /// <summary>
        /// HTML转行成TEXT
        /// </summary>
        /// <param name="strHtml"></param>
        /// <returns></returns>
        public static string HtmlToTxt(string strHtml)
        {
            string[] aryReg ={
            @"<script[^>]*?>.*?</script>",
            @"<(/s*)?!?((w+:)?w+)(w+(s*=?s*(([""'])(\[""'tbnr]|[^7])*?7|w+)|.{0})|s)*?(/s*)?>",
            @"([
])[s]+",
            @"&(quot|#34);",
            @"&(amp|#38);",
            @"&(lt|#60);",
            @"&(gt|#62);", 
            @"&(nbsp|#160);", 
            @"&(iexcl|#161);",
            @"&(cent|#162);",
            @"&(pound|#163);",
            @"&(copy|#169);",
            @"&#(d+);",
            @"-->",
            @"<!--.*
"
            };

            string newReg = aryReg[0];
            string strOutput = strHtml;
            for (int i = 0; i < aryReg.Length; i++)
            {
                Regex regex = new Regex(aryReg[i], RegexOptions.IgnoreCase);
                strOutput = regex.Replace(strOutput, string.Empty);
            }

            strOutput.Replace("<", "");
            strOutput.Replace(">", "");
            strOutput.Replace("
", "");


            return strOutput;
        }
        #endregion

        #region 判断对象是否为空
        /// <summary>
        /// 判断对象是否为空，为空返回true
        /// </summary>
        /// <typeparam name="T">要验证的对象的类型</typeparam>
        /// <param name="data">要验证的对象</param>        
        public static bool IsNullOrEmpty<T>(this T data)
        {
            //如果为null
            if (data == null)
            {
                return true;
            }

            //如果为""
            if (data.GetType() == typeof(String))
            {
                if (string.IsNullOrEmpty(data.ToString().Trim()) || data.ToString() == "")
                {
                    return true;
                }
            }

            //如果为DBNull
            if (data.GetType() == typeof(DBNull))
            {
                return true;
            }

            //不为空
            return false;
        }

        /// <summary>
        /// 判断对象是否为空，为空返回true
        /// </summary>
        /// <param name="data">要验证的对象</param>
        public static bool IsNullOrEmpty(this object data)
        {
            //如果为null
            if (data == null)
            {
                return true;
            }

            //如果为""
            if (data.GetType() == typeof(String))
            {
                if (string.IsNullOrEmpty(data.ToString().Trim()))
                {
                    return true;
                }
            }

            //如果为DBNull
            if (data.GetType() == typeof(DBNull))
            {
                return true;
            }

            //不为空
            return false;
        }
        #endregion      

        #region 验证是否为浮点数
        /// <summary>
        /// 验证是否浮点数
        /// </summary>
        /// <param name="floatNum"></param>
        /// <returns></returns>
        public static bool IsFloat(this string floatNum)
        {
            //如果为空，认为验证不合格
            if (IsNullOrEmpty(floatNum))
            {
                return false;
            }
            //清除要验证字符串中的空格
            floatNum = floatNum.Trim();

            //模式字符串
            string pattern = @"^(-?d+)(.d+)?$";

            //验证
            return RegexHelper.IsMatch(floatNum, pattern);
        }
        #endregion

        #region 验证是否为整数
        /// <summary>
        /// 验证是否为整数 如果为空，认为验证不合格 返回false
        /// </summary>
        /// <param name="number">要验证的整数</param>        
        public static bool IsInt(this string number)
        {
            //如果为空，认为验证不合格
            if (IsNullOrEmpty(number))
            {
                return false;
            }

            //清除要验证字符串中的空格
            number = number.Trim();

            //模式字符串
            string pattern = @"^[0-9]+[0-9]*$";

            //验证
            return RegexHelper.IsMatch(number, pattern);
        }
        #endregion

        #region 验证是否为数字
        /// <summary>
        /// 验证是否为数字
        /// </summary>
        /// <param name="number">要验证的数字</param>        
        public static bool IsNumber(this string number)
        {
            //如果为空，认为验证不合格
            if (IsNullOrEmpty(number))
            {
                return false;
            }

            //清除要验证字符串中的空格
            number = number.Trim();

            //模式字符串
            string pattern = @"^[0-9]+[0-9]*[.]?[0-9]*$";

            //验证
            return RegexHelper.IsMatch(number, pattern);
        }
        #endregion

        #region 验证日期是否合法
        /// <summary>
        /// 是否是日期
        /// </summary>
        /// <param name="date"></param>
        /// <returns></returns>
        public static bool IsDate(this object date)
        {

            //如果为空，认为验证合格
            if (IsNullOrEmpty(date))
            {
                return false;
            }
            string strdate = date.ToString();
            try
            {
                //用转换测试是否为规则的日期字符
                date = Convert.ToDateTime(date).ToString("d");
                return true;
            }
            catch
            {
                //如果日期字符串中存在非数字，则返回false
                if (!IsInt(strdate))
                {
                    return false;
                }

                #region 对纯数字进行解析
                //对8位纯数字进行解析
                if (strdate.Length == 8)
                {
                    //获取年月日
                    string year = strdate.Substring(0, 4);
                    string month = strdate.Substring(4, 2);
                    string day = strdate.Substring(6, 2);

                    //验证合法性
                    if (Convert.ToInt32(year) < 1900 || Convert.ToInt32(year) > 2100)
                    {
                        return false;
                    }
                    if (Convert.ToInt32(month) > 12 || Convert.ToInt32(day) > 31)
                    {
                        return false;
                    }

                    //拼接日期
                    date = Convert.ToDateTime(year + "-" + month + "-" + day).ToString("d");
                    return true;
                }

                //对6位纯数字进行解析
                if (strdate.Length == 6)
                {
                    //获取年月
                    string year = strdate.Substring(0, 4);
                    string month = strdate.Substring(4, 2);

                    //验证合法性
                    if (Convert.ToInt32(year) < 1900 || Convert.ToInt32(year) > 2100)
                    {
                        return false;
                    }
                    if (Convert.ToInt32(month) > 12)
                    {
                        return false;
                    }

                    //拼接日期
                    date = Convert.ToDateTime(year + "-" + month).ToString("d");
                    return true;
                }

                //对5位纯数字进行解析
                if (strdate.Length == 5)
                {
                    //获取年月
                    string year = strdate.Substring(0, 4);
                    string month = strdate.Substring(4, 1);

                    //验证合法性
                    if (Convert.ToInt32(year) < 1900 || Convert.ToInt32(year) > 2100)
                    {
                        return false;
                    }

                    //拼接日期
                    date = year + "-" + month;
                    return true;
                }

                //对4位纯数字进行解析
                if (strdate.Length == 4)
                {
                    //获取年
                    string year = strdate.Substring(0, 4);

                    //验证合法性
                    if (Convert.ToInt32(year) < 1900 || Convert.ToInt32(year) > 2100)
                    {
                        return false;
                    }

                    //拼接日期
                    date = Convert.ToDateTime(year).ToString("d");
                    return true;
                }
                #endregion

                return false;
            }

        }
        /// <summary>
        /// 验证日期是否合法,对不规则的作了简单处理
        /// </summary>
        /// <param name="date">日期</param>
        public static bool IsDate(ref string date)
        {
            //如果为空，认为验证合格
            if (IsNullOrEmpty(date))
            {
                return true;
            }

            //清除要验证字符串中的空格
            date = date.Trim();

            //替换
            date = date.Replace(@"", "-");
            //替换/
            date = date.Replace(@"/", "-");

            //如果查找到汉字"今",则认为是当前日期
            if (date.IndexOf("今") != -1)
            {
                date = DateTime.Now.ToString();
            }

            try
            {
                //用转换测试是否为规则的日期字符
                date = Convert.ToDateTime(date).ToString("d");
                return true;
            }
            catch
            {
                //如果日期字符串中存在非数字，则返回false
                if (!IsInt(date))
                {
                    return false;
                }

                #region 对纯数字进行解析
                //对8位纯数字进行解析
                if (date.Length == 8)
                {
                    //获取年月日
                    string year = date.Substring(0, 4);
                    string month = date.Substring(4, 2);
                    string day = date.Substring(6, 2);

                    //验证合法性
                    if (Convert.ToInt32(year) < 1900 || Convert.ToInt32(year) > 2100)
                    {
                        return false;
                    }
                    if (Convert.ToInt32(month) > 12 || Convert.ToInt32(day) > 31)
                    {
                        return false;
                    }

                    //拼接日期
                    date = Convert.ToDateTime(year + "-" + month + "-" + day).ToString("d");
                    return true;
                }

                //对6位纯数字进行解析
                if (date.Length == 6)
                {
                    //获取年月
                    string year = date.Substring(0, 4);
                    string month = date.Substring(4, 2);

                    //验证合法性
                    if (Convert.ToInt32(year) < 1900 || Convert.ToInt32(year) > 2100)
                    {
                        return false;
                    }
                    if (Convert.ToInt32(month) > 12)
                    {
                        return false;
                    }

                    //拼接日期
                    date = Convert.ToDateTime(year + "-" + month).ToString("d");
                    return true;
                }

                //对5位纯数字进行解析
                if (date.Length == 5)
                {
                    //获取年月
                    string year = date.Substring(0, 4);
                    string month = date.Substring(4, 1);

                    //验证合法性
                    if (Convert.ToInt32(year) < 1900 || Convert.ToInt32(year) > 2100)
                    {
                        return false;
                    }

                    //拼接日期
                    date = year + "-" + month;
                    return true;
                }

                //对4位纯数字进行解析
                if (date.Length == 4)
                {
                    //获取年
                    string year = date.Substring(0, 4);

                    //验证合法性
                    if (Convert.ToInt32(year) < 1900 || Convert.ToInt32(year) > 2100)
                    {
                        return false;
                    }

                    //拼接日期
                    date = Convert.ToDateTime(year).ToString("d");
                    return true;
                }
                #endregion

                return false;
            }
        }
        #endregion

        /// <summary>
        ///  //前台显示邮箱的掩码替换(由tzh@qq.com等替换成t*****@qq.com)
        /// </summary>
        /// <param name="Email">邮箱</param>
        /// <returns></returns>
        public static string GetEmail(string Email)
        {

            string strArg = "";
            string SendEmail = "";
            Match match = Regex.Match(Email, @"(w)w+@");

            if (match.Success)
            {
                strArg = match.Groups[1].Value + "*****@";
                SendEmail = Regex.Replace(Email, @"w+@", strArg);
            }
            else
                SendEmail = Email;
            return SendEmail;
        }

        /// <summary>
        /// 检查字符串是否存在与一个,组合到一起的字符串数组中
        /// </summary>
        /// <param name="strSplit">未分割的字符串</param>
        /// <param name="split">分割符号</param>
        /// <param name="targetValue">目标字符串</param>
        /// <returns></returns>
        public static bool CheckStringHasValue(string strSplit, char split, string targetValue)
        {
            string[] strList = strSplit.Split(split);
            foreach (string str in strList)
            {
                if (targetValue == str)
                    return true;
            }
            return false;
        }

        #region 枚举型相关操作

        /// <summary>
        /// 功能描述；获取枚举名称.传入枚举类型和枚举值
        /// </summary>
        /// <param name="enumType"></param>
        /// <param name="intEnumValue"></param>
        /// <returns></returns>
        public static string GetEnumText<T>(int intEnumValue)
        {
            return Enum.GetName(typeof(T), intEnumValue);
        }

        /// <summary>
        /// 功能描述:获取枚举项集合，传入枚举类型
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <returns></returns>
        public static IList<object> BindEnums<T>()
        {
            IList<object> _list = new List<object>();
            //遍历枚举集合
            foreach (int i in Enum.GetValues(typeof(T)))
            {
                var _selItem = new
                {
                    Value = i,
                    Text = Enum.GetName(typeof(T), i)
                };
                _list.Add(_selItem);
            }
            return _list;
        }
       
        ///<summary>
        /// 返回 Dic 枚举项，描述
        ///</summary>
        ///<param name="enumType"></param>
        ///<returns>Dic枚举项，描述</returns>
        public static Dictionary<string, string> BindEnums(Type enumType)
        {
            Dictionary<string, string> dic = new Dictionary<string, string>();
            FieldInfo[] fieldinfos = enumType.GetFields();
            foreach (FieldInfo field in fieldinfos)
            {
                if (field.FieldType.IsEnum)
                {
                    Object[] objs = field.GetCustomAttributes(typeof(DescriptionAttribute), false);

                    dic.Add(field.Name, ((DescriptionAttribute)objs[0]).Description);
                }

            }

            return dic;
        }
        ///<summary>
        /// 返回 List《Enums.EnumsClass》 枚举值、名称、描述
        ///</summary>
        public static List<Enums.EnumsClass> BindEnumsList(Type enumType)
        {
            var list = new List<Enums.EnumsClass>();
            FieldInfo[] fieldinfos = enumType.GetFields();
            var enumvalue = Enum.GetValues(enumType);
            foreach (FieldInfo field in fieldinfos)
            {
                if (field.FieldType.IsEnum)
                {
                    int ev = -1;
                    Object[] objs = field.GetCustomAttributes(typeof(DescriptionAttribute), false);
                    foreach (int item in enumvalue)
                    {
                        if (Enum.GetName(enumType, item) == field.Name)
                        {
                            ev = item;
                            break;
                        }
                    }
                    list.Add(new Enums.EnumsClass
                    {
                        Name = field.Name,
                        Value = ev,
                        Text = ((DescriptionAttribute)objs[0]).Description
                    });
                }
            }
            return list;
        }

        #endregion

        #region 获取集合中某个字段的拼接，例：获取姓名拼接

        /// <summary>
        /// 功能描述：获取集合中某个字段的拼接，例：获取姓名拼接
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="list">集合</param>
        /// <param name="strFieldName">字段名</param>
        /// <param name="strSplit">分隔符</param>
        /// <returns></returns>
        public static string GetFieldValueJoin<T>(IList<T> list, string strFieldName, string strSplit)
        {
            //判断入口
            if (list == null || list.Count <= 0 || string.IsNullOrEmpty(strFieldName))
                return string.Empty;


            //获取属性
            PropertyInfo _pro = typeof(T).GetProperty(strFieldName);
            if (_pro == null)
                return string.Empty;
            //变量，记录返回值
            string _strReturn = string.Empty;
            foreach (T _entityI in list)
            {
                //获取属性值
                object _objValue = _pro.GetValue(_entityI, null);
                if (_objValue == null || string.IsNullOrEmpty(_objValue.ToString()))
                    //没有属性值，则跳过
                    continue;

                //有属性值，则拼接
                _strReturn += _objValue.ToString() + strSplit;
            }

            if (string.IsNullOrEmpty(_strReturn))
                return string.Empty;

            return _strReturn.Substring(0, _strReturn.Length - strSplit.Length);
        }

        #endregion

       

    }
}

原创文章 转载请尊重劳动成果 http://yuangang.cnblogs.com