asp.net数据类型转换类实例

作者:袖梨 2022-06-25
 代码如下 复制代码

using System;
using System.Collections.Generic;
using System.Text;
using System.Text.RegularExpressions;

namespace TypeClass

{
    public class TypeParse
    {
        ///


        /// 判断对象是否为Int32类型的数字
        ///

        ///
        ///
        public static bool IsNumeric(object Expression)
        {
            if (Expression != null)
            {
                 int intVal;
                 return int.TryParse(Expression.ToString(), out intVal);
            }
            return false;

        }


        public static bool IsDouble(object Expression)
        {
            if (Expression != null)
            {
                double doubleVal;
                return double.TryParse(Expression.ToString(), out doubleVal);
            }
            return false;
        }

        ///


        /// string型转换为bool型
        ///

        /// 要转换的字符串
        /// 缺省值
        /// 转换后的bool类型结果
        public static bool StrToBool(object Expression, bool defValue)
        {
            if (Expression != null)
            {
                bool boolValue;
                if (bool.TryParse(Expression.ToString(), out boolValue))
                    return boolValue;
                else
                    return defValue;
            }
            return defValue;
        }

        ///


        /// 将对象转换为Int32类型
        ///

        /// 要转换的字符串
        /// 缺省值
        /// 转换后的Int32类型结果
        public static int StrToInt(object Expression, int defValue)
        {
            if (Expression != null)
            {
                int intValue;
                if (int.TryParse(Expression.ToString(), out intValue))
                    return intValue;
                else
                    return defValue;
            }
            return defValue;
        }

        ///


        /// string型转换为float型
        ///

        /// 要转换的字符串
        /// 缺省值
        /// 转换后的float类型结果
        public static float StrToFloat(object strValue, float defValue)
        {
            if (strValue != null)
            {
                float floatValue;
                if (float.TryParse(strValue.ToString(), out floatValue))
                    return floatValue;
                else
                    return defValue;
            }
            return defValue;
        }

        ///


        /// string型转换为Decimal型
        ///

        /// 要转换的字符串
        /// 缺省值
        /// 转换后的Decimal类型结果
        public static Decimal StrToDecimal(object strValue, Decimal defValue)
        {
            if (strValue != null)
            {
                Decimal decimalValue;
                if (Decimal.TryParse(strValue.ToString(), out decimalValue))
                    return Math.Round(decimalValue,2);
                else
                    return defValue;
            }
            return defValue;
        }

        ///


        /// string型转换为datetime型
        ///

        /// 要转换的字符串
        /// 缺省值
        /// 转换后的datetime类型结果
        public static DateTime StrToDateTime(object strValue, DateTime defValue)
        {
            if (strValue != null)
            {
                DateTime DateTimeValue;
                if (DateTime.TryParse(strValue.ToString(), out DateTimeValue))
                    return DateTimeValue;
                else
                    return defValue;
            }
            return defValue;
        }


        ///


        /// 判断给定的字符串数组(strNumber)中的数据是不是都为数值型
        ///

        /// 要确认的字符串数组
        /// 是则返加true 不是则返回 false
        public static bool IsNumericArray(string[] strNumber)
        {
            if (strNumber == null)
            {
                return false;
            }
            if (strNumber.Length < 1)
            {
                return false;
            }
            foreach (string id in strNumber)
            {
                if (!IsNumeric(id))
                {
                    return false;
                }
            }
            return true;

        }
    }
}

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