【.NET / C#】SimpleConverter（数值文本互转工具类）

C# 数值文本互转工具类

using System;
using System.ComponentModel;

namespace System
{
    public static class SimpleConverter
    {

        /// <summary>
        /// [ String | 数值字符串 ] -> [ ValueType | 数值 ]
        /// </summary>
        /// <typeparam name="T">[ ValueType | 数值类型 ]</typeparam>
        /// <param name="value">[ String | 数值字符串 ]</param>
        /// <exception cref="NotSupportedException"></exception>
        /// <returns></returns>
        public static T ToNumber<T>(string value) where T : struct
        {
            var cast = TypeDescriptor.GetConverter(typeof(T));
            if (cast != null) 
            {
                return (T) cast.ConvertFromInvariantString(value);
            }
            return default(T);
        }

        /// <summary>
        /// [ String | 数值字符串 ] -> [ ValueType | 数值 ]
        /// </summary>
        /// <typeparam name="T">[ ValueType | 数值类型 ]</typeparam>
        /// <param name="value">[ String | 数值字符串 ]</param>
        /// <param name="def">[ DefaultValue | 默认数值 ]</param>
        /// <returns></returns>
        public static T ToNumber<T>(string value, T def) where T : struct
        {
            try
            {
                var answer = ToNumber<T>(value);
                return Equals(answer, default(T)) ? def : answer;
            }
            catch (NotSupportedException)
            {
                return def;
            }
        }

        /// <summary>
        /// [ ValueType | 数值 ] -> [ String | 数值字符串 ]
        /// </summary>
        /// <typeparam name="T">[ ValueType | 数值类型 ]</typeparam>
        /// <param name="value">[ ValueType | 数值 ]</param>
        /// <exception cref="NotSupportedException"></exception>
        /// <returns></returns>
        public static string ToString<T>(T value) where T : struct
        {
            var cast = TypeDescriptor.GetConverter(typeof(T));
            if (cast != null)
            {
                return cast.ConvertToInvariantString(value);
            }
            return Convert.ToString(value);
        }

        /// <summary>
        /// [ ValueType | 数值 ] -> [ String | 数值字符串 ]
        /// </summary>
        /// <typeparam name="T">[ ValueType | 数值类型 ]</typeparam>
        /// <param name="value">[ ValueType | 数值 ]</param>
        /// <param name="def">[ DefaultString | 默认数值字符串 ]</param>
        /// <returns></returns>
        public static string ToString<T>(T value, string def) where T : struct
        {
            try
            {
                var answer = ToString<T>(value);
                return String.IsNullOrEmpty(answer) ? def : answer;
            }
            catch (NotSupportedException)
            {
                return def;
            }
        }

    }
}