CnccForTMS/SiwiFms.Helper/HelpTo.cs

using System;
using System.Collections;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Reflection;
using System.Runtime;
using System.Runtime.InteropServices;
using System.Text.RegularExpressions;
using System.Web;

namespace SiwiFms.Helper
{
    public static class HelpTo
    {
        /// <summary>
        /// 将对象转json字符串
        /// </summary>
        /// <param name="obj"></param>
        /// <returns></returns>
        public static string ToJson(this object obj)
        {
            return Newtonsoft.Json.JsonConvert.SerializeObject(obj);
        }

        /// <summary>
        /// 将string Json字符串转实体类型
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="str"></param>
        /// <returns></returns>
        public static T ToEntity<T>(this string str)
        {
            return Newtonsoft.Json.JsonConvert.DeserializeObject<T>(str);
        }
        
        /// <summary>
        /// 将对象转Int
        /// </summary>
        /// <param name="str"></param>
        /// <returns></returns>
        public static int ToInt(this object str)
        {
            if (str == null)
                return 0;
            else
                return Convert.ToInt32(str);
        }

        /// <summary>
        /// 将对象转double类型
        /// </summary>
        /// <param name="str"></param>
        /// <returns></returns>
        public static double ToDouble(this object str)
        {
            if (str == null)
                return 0;
            else
            {
                double tmp;
                bool bl= double.TryParse(str.ToStr(), out tmp);
                if (bl)
                    return tmp;
                else
                    return 0;
            }
        }


        /// <summary>
        /// 是否是Int类型
        /// </summary>
        /// <param name="obj"></param>
        /// <returns></returns>
        public static bool IsInt(this object obj)
        {
            int tmp;
            return int.TryParse(obj.ToString(), out tmp);
        }

        /// <summary>
        /// 将对象转string
        /// </summary>
        /// <param name="t"></param>
        /// <returns></returns>
        public static string ToStr(this object t)
        {
            if (t == null)
                return string.Empty;
            else
                return t.ToString();
        }

        /// <summary>
        /// 是否为空
        /// </summary>
        /// <param name="t"></param>
        /// <returns></returns>
        public static bool IsNull(this object t)
        {
            if (t == null)
                return true;
            else
                return false;
        }

        public static bool IsNullOrEmpty(this string str)
        {
            if (string.IsNullOrEmpty(str))
                return true;
            else
                return false;

        }

        /// <summary>
        /// 获取新的ID
        /// </summary>
        public static string NewId
        {
            get {
                return Guid.NewGuid().ToString();
            }
        }

        /// <summary>
        /// 获取新的时间
        /// </summary>
        public static DateTime NewDate
        {
            get {
                return DateTime.Now;
            }
        }

        /// <summary>
        /// 将对象转时间类型
        /// </summary>
        /// <param name="str"></param>
        /// <returns></returns>
        public static DateTime ToDateTime(this string str)
        {
            DateTime dt;
            if (DateTime.TryParse(str, out dt))
            {
                return dt;
            }
            else
            {
                return DateTime.MinValue;//返回最小的时间
            }
        }

        /// <summary>
        /// 将对象反射赋值
        /// </summary>
        /// <typeparam name="S"></typeparam>
        /// <typeparam name="T"></typeparam>
        /// <param name="s">原对象</param>
        /// <param name="t">转换后的对象</param>
        /// <returns></returns>
        public static T AutoMapping<T>(this object s) where T : new()
        {
            T t=new T();
            ObjectReflection.AutoMapping<T>(s,t);
            return t;
        }

        /// <summary>
        /// 将对象集合反射赋值
        /// </summary>
        /// <typeparam name="S"></typeparam>
        /// <typeparam name="T">原集合</typeparam>
        /// <param name="s">转换后集合</param>
        /// <returns></returns>
        public static List<T> AutoMapping<S, T>(this List<S> s) where T : new()
        {
            List<T> t = new List<T>();
            ObjectReflection.AutoMapping<S,T>(s, t);
            return t;
        }
        //获取枚举描述信息
        public static string GetDescription(this Enum value)
        {
            Type type = value.GetType();
            string name = Enum.GetName(type, value);
            if (!name.IsNull())
            {
                FieldInfo fieldInfo = type.GetField(name);
                if (!fieldInfo.IsNull())
                {
                    DescriptionAttribute attr = Attribute.GetCustomAttribute(fieldInfo, typeof(DescriptionAttribute), false) as DescriptionAttribute;
                    if (!attr.IsNull())
                    {
                        return attr.Description;
                    }
                }
            }
            return null;
        }
    }
}