C#中各种数据类型转换的方法的类

ゝ一纸荒年。 2021-11-26 09:48 340阅读 0赞

//各种数据类型转换方法的类  
    public class GF\_Convert  
    \{  
        /// <summary>  
        /// 字符串 转换 char数组  
        /// </summary>  
        /// <param name="in\_str"></param>  
        /// <param name="in\_len"></param>  
        /// <returns></returns>  
        public static char\[\] string2chararray(string in\_str, int in\_len)  
        \{  
            char\[\] ch = new char\[in\_len\];  
            in\_str.ToCharArray().CopyTo(ch, 0);  
            return ch;  
        \}  
  
        /// <summary>  
        /// char数组 转换 字符串  
        /// </summary>  
        /// <param name="in\_str"></param>  
        /// <returns></returns>          
        public static string chararray2string(char\[\] in\_str)  
        \{  
            string out\_str;  
            out\_str = new string(in\_str);  
            int i = out\_str.IndexOf('\\0', 0);  
            if (i == -1)  
                i = 16;  
            return out\_str.Substring(0, i);  
        \}  
          
        /// <summary>  
        /// byte数组 转换 字符串  
        /// </summary>  
        /// <param name="in\_str"></param>  
        /// <returns></returns>  
        public static string bytearray2string(byte\[\] in\_str)  
        \{  
            string out\_str;  
            out\_str = System.Text.Encoding.Default.GetString(in\_str);  
            return out\_str.Substring(0, out\_str.IndexOf('\\0', 0));  
  
        \}  
  
        /// <summary>  
        /// 字符串 转换 byte数组  注意转换出来会使原来的bytearray长度变短  
        /// </summary>  
        /// <param name="in\_str"></param>  
        /// <returns></returns>  
        public static byte\[\] string2bytearray(string in\_str)  
        \{  
            return System.Text.Encoding.Default.GetBytes(in\_str);  
        \}  
  
        /// <summary>  
        /// 字符串 转换 byte数组  长度为传如的长度  
        /// </summary>  
        /// <param name="in\_str">传入字符串</param>  
        /// <param name="iLen">目标字节数组长度</param>  
        /// <returns></returns>  
        public static byte\[\] string2bytearray(string in\_str, int iLen)  
        \{  
            byte\[\] bytes = new byte\[iLen\];  
            byte\[\] bsources=System.Text.Encoding.Default.GetBytes(in\_str);  
            Array.Copy(bsources, bytes, bsources.Length);  
              
              
            return bytes;  
        \}  
          
        /// <summary>  
        /// 将字符串编码为Base64字符串  
        /// </summary>  
        /// <param name="str"></param>  
        /// <returns></returns>  
        public static string Base64Encode(string str)  
        \{  
            byte\[\] barray;  
            barray = Encoding.Default.GetBytes(str);  
            return Convert.ToBase64String(barray);  
        \}  
  
        /// <summary>  
        /// 将Base64字符串解码为普通字符串  
        /// </summary>  
        /// <param name="str"></param>  
        /// <returns></returns>  
        public static string Base64Decode(string str)  
        \{  
            byte\[\] barray;  
            try  
            \{  
                barray = Convert.FromBase64String(str);  
                return Encoding.Default.GetString(barray);  
            \}  
            catch  
            \{  
                return str;  
            \}  
        \}  
  
        /// <summary>  
        /// 图片 转换 byte数组  
        /// </summary>  
        /// <param name="pic"></param>  
        /// <param name="fmt"></param>  
        /// <returns></returns>  
        public static byte\[\] image\_Image2Byte(Image pic, System.Drawing.Imaging.ImageFormat fmt)  
        \{  
            MemoryStream mem = new MemoryStream();  
            pic.Save(mem, fmt);  
            mem.Flush();  
            return mem.ToArray();  
        \}  
        /// <summary>  
        /// byte数组 转换 图片  
        /// </summary>  
        /// <param name="bytes"></param>  
        /// <returns></returns>  
        public static Image image\_Byte2Image(byte\[\] bytes)  
        \{  
            MemoryStream mem = new MemoryStream(bytes, true);  
            mem.Read(bytes, 0, bytes.Length);  
            mem.Flush();  
            Image aa = Image.FromStream(mem);  
            return aa;  
        \}  
                  
        /// <summary>  
        /// ip 转换 长整形  
        /// </summary>  
        /// <param name="strIP"></param>  
        /// <returns></returns>  
        public static long IP2Long(string strIP)  
        \{  
  
            long\[\] ip = new long\[4\];  
  
            string\[\] s = strIP.Split('.');  
            ip\[0\] = long.Parse(s\[0\]);  
            ip\[1\] = long.Parse(s\[1\]);  
            ip\[2\] = long.Parse(s\[2\]);  
            ip\[3\] = long.Parse(s\[3\]);  
  
            return (ip\[0\] << 24) + (ip\[1\] << 16) + (ip\[2\] << 8) + ip\[3\];  
        \}  
  
        /// <summary>  
        /// 长整形 转换 IP  
        /// </summary>  
        /// <param name="longIP"></param>  
        /// <returns></returns>  
        public static string Long2IP(long longIP)  
        \{  
  
  
            StringBuilder sb = new StringBuilder("");  
            sb.Append(longIP >> 24);  
            sb.Append(".");  
  
            //将高8位置0，然后右移16为  
  
  
            sb.Append((longIP & 0x00FFFFFF) >> 16);  
            sb.Append(".");  
  
  
            sb.Append((longIP & 0x0000FFFF) >> 8);  
            sb.Append(".");  
  
            sb.Append((longIP & 0x000000FF));  
  
  
            return sb.ToString();  
        \}  
  
        /// <summary>  
        /// 将8位日期型整型数据转换为日期字符串数据  
        /// </summary>  
        /// <param name="date">整型日期</param>  
        /// <param name="chnType">是否以中文年月日输出</param>  
        /// <returns></returns>  
        public static string FormatDate(int date, bool chnType)  
        \{  
            string dateStr = date.ToString();  
  
            if (date <= 0 || dateStr.Length != 8)  
                return dateStr;  
  
            if (chnType)  
                return dateStr.Substring(0, 4) + "年" + dateStr.Substring(4, 2) + "月" + dateStr.Substring(6) + "日";  
  
            return dateStr.Substring(0, 4) + "-" + dateStr.Substring(4, 2) + "-" + dateStr.Substring(6);  
        \}  
  
  
        /// <summary>  
        /// string型转换为bool型  
        /// </summary>  
        /// <param name="strValue">要转换的字符串</param>  
        /// <param name="defValue">缺省值</param>  
        /// <returns>转换后的bool类型结果</returns>  
        public static bool StrToBool(object expression, bool defValue)  
        \{  
            if (expression != null)  
                return StrToBool(expression, defValue);  
  
            return defValue;  
        \}  
  
        /// <summary>  
        /// string型转换为bool型  
        /// </summary>  
        /// <param name="strValue">要转换的字符串</param>  
        /// <param name="defValue">缺省值</param>  
        /// <returns>转换后的bool类型结果</returns>  
        public static bool StrToBool(string expression, bool defValue)  
        \{  
            if (expression != null)  
            \{  
                if (string.Compare(expression, "true", true) == 0)  
                    return true;  
                else if (string.Compare(expression, "false", true) == 0)  
                    return false;  
            \}  
            return defValue;  
        \}  
          
        /// <summary>  
        /// 将对象转换为Int32类型  
        /// </summary>  
        /// <param name="strValue">要转换的字符串</param>  
        /// <param name="defValue">缺省值</param>  
        /// <returns>转换后的int类型结果</returns>  
        public static int ObjectToInt(object expression)  
        \{  
            return ObjectToInt(expression, 0);  
        \}  
  
        /// <summary>  
        /// 将对象转换为Int32类型  
        /// </summary>  
        /// <param name="strValue">要转换的字符串</param>  
        /// <param name="defValue">缺省值</param>  
        /// <returns>转换后的int类型结果</returns>  
        public static int ObjectToInt(object expression, int defValue)  
        \{  
            if (expression != null)  
                return StrToInt(expression.ToString(), defValue);  
  
            return defValue;  
        \}  
          
        /// <summary>  
        /// 将对象转换为Int32类型,转换失败返回0  
        /// </summary>  
        /// <param name="str">要转换的字符串</param>  
        /// <returns>转换后的int类型结果</returns>  
        public static int StrToInt(string str)  
        \{  
            return StrToInt(str, 0);  
        \}  
  
        /// <summary>  
        /// 将对象转换为Int32类型  
        /// </summary>  
        /// <param name="str">要转换的字符串</param>  
        /// <param name="defValue">缺省值</param>  
        /// <returns>转换后的int类型结果</returns>  
        public static int StrToInt(string str, int defValue)  
        \{  
            if (string.IsNullOrEmpty(str) || str.Trim().Length >= 11 || !Regex.IsMatch(str.Trim(), @"^(\[-\]|\[0-9\])\[0-9\]\*(\\.\\w\*)?$"))  
                return defValue;  
  
            int rv;  
            if (Int32.TryParse(str, out rv))  
                return rv;  
  
            return Convert.ToInt32(StrToFloat(str, defValue));  
        \}  
  
        /// <summary>  
        /// string型转换为float型  
        /// </summary>  
        /// <param name="strValue">要转换的字符串</param>  
        /// <param name="defValue">缺省值</param>  
        /// <returns>转换后的int类型结果</returns>  
        public static float StrToFloat(object strValue, float defValue)  
        \{  
            if ((strValue == null))  
                return defValue;  
  
            return StrToFloat(strValue.ToString(), defValue);  
        \}  
  
        /// <summary>  
        /// string型转换为float型  
        /// </summary>  
        /// <param name="strValue">要转换的字符串</param>  
        /// <param name="defValue">缺省值</param>  
        /// <returns>转换后的int类型结果</returns>  
        public static float ObjectToFloat(object strValue, float defValue)  
        \{  
            if ((strValue == null))  
                return defValue;  
  
            return StrToFloat(strValue.ToString(), defValue);  
        \}  
  
        /// <summary>  
        /// string型转换为float型  
        /// </summary>  
        /// <param name="strValue">要转换的字符串</param>  
        /// <param name="defValue">缺省值</param>  
        /// <returns>转换后的int类型结果</returns>  
        public static float ObjectToFloat(object strValue)  
        \{  
            return ObjectToFloat(strValue.ToString(), 0);  
        \}  
  
        /// <summary>  
        /// string型转换为float型  
        /// </summary>  
        /// <param name="strValue">要转换的字符串</param>  
        /// <returns>转换后的int类型结果</returns>  
        public static float StrToFloat(string strValue)  
        \{  
            if ((strValue == null))  
                return 0;  
  
            return StrToFloat(strValue.ToString(), 0);  
        \}  
  
        /// <summary>  
        /// string型转换为float型  
        /// </summary>  
        /// <param name="strValue">要转换的字符串</param>  
        /// <param name="defValue">缺省值</param>  
        /// <returns>转换后的int类型结果</returns>  
        public static float StrToFloat(string strValue, float defValue)  
        \{  
            if ((strValue == null) || (strValue.Length > 10))  
                return defValue;  
  
            float intValue = defValue;  
            if (strValue != null)  
            \{  
                bool IsFloat = Regex.IsMatch(strValue, @"^(\[-\]|\[0-9\])\[0-9\]\*(\\.\\w\*)?$");  
                if (IsFloat)  
                    float.TryParse(strValue, out intValue);  
            \}  
            return intValue;  
        \}  
  
        /// <summary>  
        /// 将对象转换为日期时间类型  
        /// </summary>  
        /// <param name="str">要转换的字符串</param>  
        /// <param name="defValue">缺省值</param>  
        /// <returns>转换后的int类型结果</returns>  
        public static DateTime StrToDateTime(string str, DateTime defValue)  
        \{  
            if (!string.IsNullOrEmpty(str))  
            \{  
                DateTime dateTime;  
                if (DateTime.TryParse(str, out dateTime))  
                    return dateTime;  
            \}  
            return defValue;  
        \}  
  
        /// <summary>  
        /// 将对象转换为日期时间类型  
        /// </summary>  
        /// <param name="str">要转换的字符串</param>  
        /// <returns>转换后的int类型结果</returns>  
        public static DateTime StrToDateTime(string str)  
        \{  
            return StrToDateTime(str, DateTime.Now);  
        \}  
  
        /// <summary>  
        /// 将对象转换为日期时间类型  
        /// </summary>  
        /// <param name="obj">要转换的对象</param>  
        /// <returns>转换后的int类型结果</returns>  
        public static DateTime ObjectToDateTime(object obj)  
        \{  
            return StrToDateTime(obj.ToString());  
        \}  
  
        /// <summary>  
        /// 将对象转换为日期时间类型  
        /// </summary>  
        /// <param name="obj">要转换的对象</param>  
        /// <param name="defValue">缺省值</param>  
        /// <returns>转换后的int类型结果</returns>  
        public static DateTime ObjectToDateTime(object obj, DateTime defValue)  
        \{  
            return StrToDateTime(obj.ToString(), defValue);  
        \}  
  
        /// <summary>  
        /// 替换回车换行符为html换行符  
        /// </summary>  
        public static string StrFormat(string str)  
        \{  
            string str2;  
  
            if (str == null)  
            \{  
                str2 = "";  
            \}  
            else  
            \{  
                str = str.Replace("\\r\\n", "<br />");  
                str = str.Replace("\\n", "<br />");  
                str2 = str;  
            \}  
            return str2;  
        \}  
  
        /// <summary>  
        /// 转换为简体中文  
        /// </summary>  
        public static string ToSChinese(string str)  
        \{  
            return Strings.StrConv(str, VbStrConv.SimplifiedChinese, 0);  
              
        \}  
  
        /// <summary>  
        /// 转换为繁体中文  
        /// </summary>  
        public static string ToTChinese(string str)  
        \{  
            return Strings.StrConv(str, VbStrConv.TraditionalChinese, 0);  
              
        \}  
  
  
        /// <summary>  
        /// 清除字符串数组中的重复项  
        /// </summary>  
        /// <param name="strArray">字符串数组</param>  
        /// <param name="maxElementLength">字符串数组中单个元素的最大长度</param>  
        /// <returns></returns>  
        public static string\[\] DistinctStringArray(string\[\] strArray, int maxElementLength)  
        \{  
            Hashtable h = new Hashtable();  
  
            foreach (string s in strArray)  
            \{  
                string k = s;  
                if (maxElementLength > 0 && k.Length > maxElementLength)  
                \{  
                    k = k.Substring(0, maxElementLength);  
                \}  
                h\[k.Trim()\] = s;  
            \}  
  
            string\[\] result = new string\[h.Count\];  
  
            h.Keys.CopyTo(result, 0);  
  
            return result;  
        \}  
  
        /// <summary>  
        /// 清除字符串数组中的重复项  
        /// </summary>  
        /// <param name="strArray">字符串数组</param>  
        /// <returns></returns>  
        public static string\[\] DistinctStringArray(string\[\] strArray)  
        \{  
            return DistinctStringArray(strArray, 0);  
        \}  
          
        \}

转载于:https://www.cnblogs.com/kevinGao/archive/2011/11/04/2671034.html