程序博客网 > 手机视频 会议 软件

常用的C#方法

来源：互联网 发布：手机视频 会议 软件 编辑：程序博客网 时间：2024/06/04 17:51
 
常用的C#方法【Format.CS】
//// <summary>
        /// 转全角的函数(SBC case)
        /// </summary>
        /// <param name="input">任意字符串</param>
        /// <returns>全角字符串</returns>
        ///<remarks>
        ///全角空格为12288，半角空格为32
        ///其他字符半角(33-126)与全角(65281-65374)的对应关系是：均相差65248
        ///</remarks>       
        public static string ToSDC(string input)
        {
            //半角转全角：
            char[] c = input.ToCharArray();
            for (int i = 0; i < c.Length; i++)
            {
                if (c[i] == 32)
                {
                    c[i] = (char)12288;
                    continue;
                }
                if (c[i] < 127)
                    c[i] = (char)(c[i] + 65248);
            }
            return new string(c);
        }

        /// <summary>
        /// 转半角的函数(DBC case)
        /// </summary>
        /// <param name="input">任意字符串</param>
        /// <returns>半角字符串</returns>
        ///<remarks>
        ///全角空格为12288，半角空格为32
        ///其他字符半角(33-126)与全角(65281-65374)的对应关系是：均相差65248
        ///</remarks>
        public static string ToDSC(string input)
        {
            char[] c = input.ToCharArray();
            for (int i = 0; i < c.Length; i++)
            {
                if (c[i] == 12288)
                {
                    c[i] = (char)32;
                    continue;
                }
                if (c[i] > 65280 && c[i] < 65375)
                    c[i] = (char)(c[i] - 65248);
            }
            return new string(c);
        }


 /// <summary>
        /// 是否是数字
        /// </summary>
        /// <param name="str"></param>
        /// <returns></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;
        }


 public static bool IsNum(String str)
        {
            for (int i = 1; i < str.Length; i++)
            {
                if (!Char.IsNumber(str, i))
                    return false;
            }
            return true;
        }


  /// <summary>
        /// 判断字符或字符串里是否有汉字
        /// </summary>
        /// <param name="CString"></param>
        /// <returns></returns>
        public static bool IsChina(string CString)
        {
            bool BoolValue = false;
            for (int i = 0; i < CString.Length; i++)
            {
                if (Convert.ToInt32(Convert.ToChar(CString.Substring(i, 1))) < Convert.ToInt32(Convert.ToChar(128)))
                {
                    BoolValue = false;
                }
                else
                {
                    BoolValue = true;
                }
            }
            return BoolValue;
        }

        public static string CutString(string str, int length)
        {
            string newString = "";
            if (str != "")
            {
                if (str.Length > length)
                {
                    newString = str.Substring(0, length) + "...";
                }
                else
                {
                    newString = str;
                }
            }
            return newString;
        }

#region 日期格式化
        /// <summary>格式化显示日期方法</summary>
        public static string GetFormatDateByDate(DateTime datetime)
        {
            string tmpDate = datetime.ToShortDateString();
            return CommonHelper.GetFormatDateByText(tmpDate);         
        }

        /// <summary>格式化显示日期方法</summary>
        public static string GetFormatDateByText(string datetime)
        {
            if (string.IsNullOrEmpty(datetime))
                return string.Empty;

            /* 注意:
             * 数据库中为Null的日期值,在经过Gentle转换后会处理成
             * .Net系统中的DateTime.MinValue,也就是"0001-1-1 0:00:00"
             * 因此这里在处理日期值时,将"0001-1-1 0:00:00"处理成
             * system.Empty,用于页面显示
            */
            string minDate = "0001";
            string maxDate = "9999";
            int min = datetime.IndexOf(minDate);
            int max = datetime.IndexOf(maxDate);
            if (min>-1 || max>-1)//如果匹配"0001"或"9999",则返回空字符串
                return string.Empty;

            /*
             * 替换一下日期分隔符号
             * "-","－","．","／","/","。","",""
            */
            string str = datetime;
            if (str.IndexOf("-") > 0)
                str = str.Replace("-", ".");
            else if(str.IndexOf("/")>0)
                str = str.Replace("/", ".");
            else if (str.IndexOf("．") > 0)
                str = str.Replace("．", ".");
            else if (str.IndexOf("／") > 0)
                str = str.Replace("／", ".");
            else if (str.IndexOf("－") > 0)
                str = str.Replace("－", ".");
            else if (str.IndexOf("。") > 0)
                str = str.Replace("。", ".");
           
            return str;
        }

        /// <summary>获得实际日期(用于保存数据)</summary>
        public static DateTime GetRealDateTimeByText(string datetime)
        {
            string str = datetime;
            if (str.IndexOf("．") > 0)
                str = str.Replace("．", "/");
            else if (str.IndexOf("-") > 0)
                str = str.Replace("-", "/");
            else if (str.IndexOf("．") > 0)
                str = str.Replace("．", "/");
            else if (str.IndexOf("／") > 0)
                str = str.Replace("／", "/");
            else if (str.IndexOf("－") > 0)
                str = str.Replace("－", "/");
            else if (str.IndexOf("。") > 0)
                str = str.Replace("。", "/");
            else if (str.IndexOf(".") > 0)
                str = str.Replace(".", "/");

            try
            {
                return DateTime.Parse(str);
            }
            catch
            {
                return new DateTime();
                //throw new Exception("日期格式错误,转换失败!"+ex.Message);
            }
        }

        /// <summary>获得实际日期(用于保存数据)</summary>
        /// 注意：专用于转换"2000年1月28日"格式的方法
        public static DateTime GetRealDateTimeByYYYYMMDD(string datetime)
        {
            string str = datetime.Replace("年", ".").Replace("月", ".").Replace("日", "");
            return CommonHelper.GetRealDateTimeByText(str);
        }
        #endregion

        #region MD5加密字符串
        /// <summary>加密字符串方法byMD5</summary>
        /// <param name="password">要加密的字符串</param>
        /// <returns>已加密的字符串</returns>
        public static string EncryptByMD5(string password)
        {
            string encryptPwd = System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(password, "md5");
            return encryptPwd.ToLower();
            //一下代码为未补位加密结果
            //MD5 md5 = new System.Security.Cryptography.MD5CryptoServiceProvider();
            //byte[] result = md5.ComputeHash(System.Text.Encoding.Default.GetBytes(password));
            //string str2 = "";
            //for (int i = 0; i < result.Length; i++)
            //{
            //    str2 += string.Format("{0:x}", result[i]);
            //}
            //return str2.ToLower();
        }
        #endregion



 #region 动态生成GUID
        //动态生成GUID 
        public static string GetNewGuid()
        {
            return System.Guid.NewGuid().ToString().Replace("-", "").ToUpper();
        }
        #endregion

        #region 判断是否是数字（正整数）
        /// <summary>
        /// 根据传入字符串判断是否是数字（正整数）
        /// </summary>
        /// <param name="str"></param>
        /// <returns></returns> 
        public static bool IsNumeric(string str)
        {
            System.Text.RegularExpressions.Regex reg1
                = new System.Text.RegularExpressions.Regex(@"^/d*$");
            return reg1.IsMatch(str);
        }
        #endregion

        #region  根据传入字符串判断是否是数字（金额数字）
        /// <summary>
        /// 根据传入字符串判断是否是数字（金额数字）
        /// </summary>
        /// <param name="str"></param>
        /// <returns></returns> 
        public static bool IsMoney(string str)
        {
            System.Text.RegularExpressions.Regex reg1
                = new System.Text.RegularExpressions.Regex(@"^[-]?/d*[.]?/d*$");
           
            return reg1.IsMatch(str);
        }
        #endregion

        #region 根据传入出生日期字符串判断当前年龄
        /// <summary>
        /// 根据传入出生日期字符串判断当前年龄
        /// </summary>
        /// <param name="birthday"></param>
        /// <returns></returns>       
        public static int GetAge(DateTime birthday)
        {
            int year = System.DateTime.Now.Year;
            int month = System.DateTime.Now.Month;
            int day = System.DateTime.Now.Day;
            int year1 = birthday.Year;
            int month1 = birthday.Month;
            int day1 = birthday.Day;
            int Age = year + month / 12 + day / 365 - year1 - month1 / 12 - day1 / 365;
            return Age;
        }
        #endregion

        #region 返回固定长度的字符串
        /// <summary>
        /// 返回固定长度的字符串
        /// </summary>
        /// <param name="s"></param>
        /// <param name="l"></param>
        /// <returns></returns>
        public static string getStr(string s, int l)
        {
            string temp = s;
            if (Regex.Replace(temp, "[/u4e00-/u9fa5]", "zz", RegexOptions.IgnoreCase).Length <= l)
            {
                return temp;
            }
            for (int i = temp.Length; i >= 0; i--)
            {
                temp = temp.Substring(0, i);
                if (Regex.Replace(temp, "[/u4e00-/u9fa5]", "zz", RegexOptions.IgnoreCase).Length <= l - 3)
                {
                    return temp + "";
                }
            }
            return "";
        }



/// <summary>
        /// 截取指定长度中英文字符串方
        /// </summary>
        /// <param name="stringToSub"></param>
        /// <param name="length"></param>
        /// <returns></returns>
        public static string GetFirstString(string stringToSub, int length)
        {
            Regex regex = new Regex("[/u4e00-/u9fa5]+", RegexOptions.Compiled);
            char[] stringChar = stringToSub.ToCharArray();
            StringBuilder sb = new StringBuilder();
            int nLength = 0;
            bool isCut = false;
            for (int i = 0; i < stringChar.Length; i++)
            {
                if (regex.IsMatch((stringChar[i]).ToString()))
                {
                    sb.Append(stringChar[i]);
                    nLength += 2;
                }
                else
                {
                    sb.Append(stringChar[i]);
                    nLength = nLength + 1;
                }
                if (nLength > length)
                {
                    isCut = true;
                    break;
                }
            }
            if (isCut)
                return sb.ToString() + "..";
            else
                return sb.ToString();
        }


        /// <summary>
        /// 截取固定字符串
        /// </summary>
        /// <param name="inputString">待截取的字符串</param>
        /// <param name="len">指定长度</param>
        /// <returns>固定长度len的字符串</returns>
        public static string CutString(string inputString, int len)
        {
            ASCIIEncoding ascii = new 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;
            }
            //如果截过则加上半个省略号
            byte[] mybyte = System.Text.Encoding.Default.GetBytes(inputString);
            if (mybyte.Length > len)
                tempString += "";
            return tempString;
        }

        /// <summary>
        /// 截取指定长度字符串(含盖半全角问题)
        /// </summary>
        /// <param name="content"></param>
        /// <param name="length"></param>
        /// <returns></returns>
        private static string getLeftSubString(string content, int length)
        {
            Encoding encoding = Encoding.GetEncoding("gb2312");
            StringBuilder sb = new StringBuilder();
            int totalLength = 0;
            foreach (char contentChar in content)
            {
                int size = encoding.GetByteCount(new char[] { contentChar });
                if (totalLength + size > length - 2)
                {
                    sb.Append("..");
                    break;
                }
                sb.Append(contentChar);
                totalLength += size;
            }
            return sb.ToString();
        }
        #endregion



 ///// <summary>
        ///// 根据输入的字符串进行身份证合法性验证
        ///// </summary>
        ///// <param name="CardNumber"></param>
        ///// <returns></returns>
        //public static bool ValidCardNumber(string CardNumber)
        //{
        //    System.Text.RegularExpressions.Regex reg1
        //          = new System.Text.RegularExpressions.Regex(@"^/d{15}|(/d{17}(/d|X|*))$");

        //    return reg1.IsMatch(CardNumber);
        //}



 #region 得到一个不重复的文件名
        /// <summary>
        /// 得到一个不重复的文件名(年月日_时分秒_微秒_UserSeqID)
        /// </summary>
        /// <param name="strUserSeqID">当前操作用户的UserSeqID</param>
        /// <returns>得到一个不重复的文件名字符串(年月日_时分秒_微秒_UserSeqID)</returns>
        public static string GetAFileNameString(string strUserSeqID)
        {
            string strTemp, strYear, strMonth, strDay, strHour, strMinute, strSecond, strMillisecond;
            DateTime dt = DateTime.Now;
            strYear = dt.Year.ToString();
            strMonth = (dt.Month > 9) ? dt.Month.ToString() : "0" + dt.Month.ToString();
            strDay = (dt.Day > 9) ? dt.Day.ToString() : "0" + dt.Day.ToString();
            strHour = (dt.Hour > 9) ? dt.Hour.ToString() : "0" + dt.Hour.ToString();
            strMinute = (dt.Minute > 9) ? dt.Minute.ToString() : "0" + dt.Minute.ToString();
            strSecond = (dt.Second > 9) ? dt.Second.ToString() : "0" + dt.Second.ToString();
            strMillisecond = dt.Millisecond.ToString();

            strTemp = strYear + strMonth + strDay + "_" + strHour + strMinute + strSecond + "_" + strMillisecond + "_" + strUserSeqID.Trim();

            return strTemp;
        }
        #endregion

        #region 生成随机数(作为旅行社订单号)
        /// <summary>
        /// 生成随机数(旅游线路订单号)
        /// </summary>
        /// <returns></returns>
        public static long GetRanDomNumeric()
        {
            Random RD = new Random();
            long tempRD = (long)RD.Next(1000);
            string newfilename = DateTime.Now.Year.ToString() + DateTime.Now.Month.ToString()
            + DateTime.Now.Day.ToString() + DateTime.Now.Hour.ToString()
            + DateTime.Now.Minute.ToString() + DateTime.Now.Second.ToString()
            + DateTime.Now.Millisecond.ToString();
            return long.Parse(newfilename) + tempRD;
            //return DateTime.Now.Ticks;
        }
        #endregion

 /// <summary>
        /// 随机数字组合成新的字符串
        /// </summary>
        /// <param name="FileName"></param>
        /// <returns></returns>
        public static string GetNewFileName(string FileName)
        {
            //跟据文件名产生一个由时间+随机数组成的一个新的文件名
            string newfilename = DateTime.Now.Year.ToString() + DateTime.Now.Month.ToString()
            + DateTime.Now.Day.ToString() + DateTime.Now.Hour.ToString()
            + DateTime.Now.Second.ToString() + DateTime.Now.Minute.ToString()
            + DateTime.Now.Millisecond.ToString()
            + FileName.Substring(FileName.LastIndexOf("."), FileName.Length - FileName.LastIndexOf("."));
            return newfilename;
        }

手机视频 会议 软件 手机视频 会议 软件
原创粉丝点击
热门IT博客
ubuntu u盘启动工具ubuntu u盘启动工具
刀塔传奇数据库刀塔传奇数据库
120首网络音乐黑名单
java交换两个数的函数
四川大学软件学院课程
火星网络直播
java多线程断点续传
距离感应软件
淘宝引流最有效的方法
2d旋转矩阵 计算
mac迅雷怎么看片
吉林大学软件学院
arm linux gcc 64位
log4net 写入数据库
程序员联合开发网
华丽上班族知乎
python代码自动补全
渠道运营数据分析
装修什么软件最好
windows最近打开文件
热门问题 老师的惩罚 人脸识别 我在镇武司摸鱼那些年 重生之率土为王 我在大康的咸鱼生活 盘龙之生命进化 天生仙种 凡人之先天五行 春回大明朝 姑娘不必设防，我是瞎子 张天予资料 张予曦全乳不遮挡 张予馨 张二嫂 张二嫂2018收入排行 二嫂帮你弄出来 二嫂 二嫂app 东北二嫂在线播放 东北二嫂35分钟在线播放 东北二嫂播放 二嫂不让戴套 大战二嫂和闺蜜 韩国片年轻二嫂中文 齐二嫂串门 张二狗 张二狗的传奇人生 烟囱里有鱼 张二狗的盗墓生涯 紫颜蓝王 张二狗的妖孽人生3全本 云里梦想乐园门票多少钱一张 张支云酱香型53度酒 张五常言论 张五常 房价 张五常书籍 张五常简介 张五常 邮箱 张小飞车祸 三亚的飞机票多少钱一张 去三亚飞机票多少钱一张 去三亚的飞机票多少钱一张 张井生 张井生通缉 张井生个人资料 张井生为什么被通缉 张井生到底是什么人物 张井生资料 江苏滨海传奇张井生 张亚中提案农民养老 张亚勤 张亚勤简介 张亚卓

程序博客网，程序员的互联网技术博客家园。csdn论坛精品 msdn技术资料都在这里