ASP.NETC#通用擴充函數之TypeParse 類型轉換方便多了

標籤：

 

 

用法：

            var int1 = "2".TryToInt();//轉換為int失敗返回0            var int2 = "2x".TryToInt();            var int3 = "2".TryToInt(1);//轉換為int失敗返回1            var int4 = "2x".TryToInt(1);            var d1 = "2".TryToMoney(); //同上            var d2 = "2x".TryToMoney();            var d3 = "2".TryToMoney(1);            var d4 = "2x".TryToMoney(1);            string a = null;            var s1 = a.TryToString();            var s3 = a.TryToString("1");            var d11 = "2".TryToDecimal();            var d22 = "2x".TryToDecimal();            var d33 = "2".TryToDecimal(1);            var d44 = "2x".TryToDecimal(1);            var de1 = "2013-1-1".TryToDate();            var de2 = "x2013-1-1".TryToDate();            var de3 = "x2013-1-1".TryToDate(DateTime.Now);            //json和model轉換            var json = new { id = 1 }.ModelToJson();            var model = "{id:1}".JsonToModel<ModelTest>();            //list和dataTable轉換            var dt = new List<ModelTest>().ListToDataTable();            var list = dt.DataTableToList<ModelTest>();

　　

 

代碼：

using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Web.Script.Serialization;using System.Data;using System.Reflection;using System.Collections;namespace SyntacticSugar{    /// <summary>    /// ** 描述：類型轉換    /// ** 創始時間：2015-6-2    /// ** 修改時間：-    /// ** sunkaixuan    /// ** 使用說明：    /// </summary>    public static class TypeParseExtenions    {        #region 強轉成int 如果失敗返回 0        /// <summary>        /// 強轉成int 如果失敗返回 0        /// </summary>        /// <param name="thisValue"></param>        /// <param name="i"></param>        /// <returns></returns>        public static int TryToInt(this object thisValue)        {            int reval = 0;            if (thisValue != null && int.TryParse(thisValue.ToString(), out reval))            {                return reval;            }            return reval;        }        #endregion        #region 強轉成int 如果失敗返回 errorValue        /// <summary>        /// 強轉成int 如果失敗返回 errorValue        /// </summary>        /// <param name="thisValue"></param>        /// <param name="i"></param>        /// <returns></returns>        public static int TryToInt(this object thisValue, int errorValue)        {            int reval = 0;            if (thisValue != null && int.TryParse(thisValue.ToString(), out reval))            {                return reval;            }            return errorValue;        }        #endregion        #region 強轉成double 如果失敗返回 0        /// <summary>        /// 強轉成money 如果失敗返回 0        /// </summary>        /// <param name="thisValue"></param>        /// <param name="i"></param>        /// <returns></returns>        public static double TryToMoney(this object thisValue)        {            double reval = 0;            if (thisValue != null && double.TryParse(thisValue.ToString(), out reval))            {                return reval;            }            return 0;        }        #endregion        #region 強轉成double 如果失敗返回 errorValue        /// <summary>        /// 強轉成double 如果失敗返回 errorValue        /// </summary>        /// <param name="thisValue"></param>        /// <param name="errorValue"></param>        /// <returns></returns>        public static double TryToMoney(this object thisValue, int errorValue)        {            double reval = 0;            if (thisValue != null && double.TryParse(thisValue.ToString(), out reval))            {                return reval;            }            return errorValue;        }        #endregion        #region 強轉成string 如果失敗返回 ""        /// <summary>        /// 強轉成string 如果失敗返回 ""        /// </summary>        /// <param name="thisValue"></param>        /// <param name="i"></param>        /// <returns></returns>        public static string TryToString(this object thisValue)        {            if (thisValue != null) return thisValue.ToString().Trim();            return "";        }        #endregion        #region  強轉成string 如果失敗返回 errorValue        /// <summary>        /// 強轉成string 如果失敗返回 str        /// </summary>        /// <param name="thisValue"></param>        /// <param name="errorValue"></param>        /// <returns></returns>        public static string TryToString(this object thisValue, string errorValue)        {            if (thisValue != null) return thisValue.ToString().Trim();            return errorValue;        }        #endregion        #region 強轉成Decimal 如果失敗返回 0        /// <summary>        /// 強轉成Decimal 如果失敗返回 0        /// </summary>        /// <param name="thisValue"></param>        /// <param name="i"></param>        /// <returns></returns>        public static Decimal TryToDecimal(this object thisValue)        {            Decimal reval = 0;            if (thisValue != null && decimal.TryParse(thisValue.ToString(), out reval))            {                return reval;            }            return 0;        }        #endregion        #region 強轉成Decimal 如果失敗返回 errorValue        /// <summary>        /// 強轉成Decimal 如果失敗返回 errorValue        /// </summary>        /// <param name="thisValue"></param>        /// <param name="errorValue"></param>        /// <returns></returns>        public static Decimal TryToDecimal(this object thisValue, int errorValue)        {            Decimal reval = 0;            if (thisValue != null && decimal.TryParse(thisValue.ToString(), out reval))            {                return reval;            }            return errorValue;        }        #endregion        #region 強轉成DateTime 如果失敗返回 DateTime.MinValue        /// <summary>        /// 強轉成DateTime 如果失敗返回 DateTime.MinValue        /// </summary>        /// <param name="thisValue"></param>        /// <param name="i"></param>        /// <returns></returns>        public static DateTime TryToDate(this object thisValue)        {            DateTime reval = DateTime.MinValue;            if (thisValue != null && DateTime.TryParse(thisValue.ToString(), out reval))            {                return reval;            }            return reval;        }        #endregion        #region 強轉成DateTime 如果失敗返回 errorValue        /// <summary>        /// 強轉成DateTime 如果失敗返回 errorValue        /// </summary>        /// <param name="thisValue"></param>        /// <param name="errorValue"></param>        /// <returns></returns>        public static DateTime TryToDate(this object thisValue, DateTime errorValue)        {            DateTime reval = DateTime.MinValue;            if (thisValue != null && DateTime.TryParse(thisValue.ToString(), out reval))            {                return reval;            }            return errorValue;        }        #endregion        #region json轉換        /// <summary>        /// 將json序列化為實體        /// </summary>        /// <typeparam name="TEntity"></typeparam>        /// <param name="json"></param>        /// <returns></returns>        public static TEntity JsonToModel<TEntity>(this string json)        {            JavaScriptSerializer jsSerializer = new JavaScriptSerializer();            return jsSerializer.Deserialize<TEntity>(json);        }        /// <summary>        /// 將實體序列化為json        /// </summary>        /// <param name="model"></param>        /// <returns></returns>        public static string ModelToJson<T>(this T model)        {            JavaScriptSerializer jsSerializer = new JavaScriptSerializer();            return jsSerializer.Serialize(model);        }        #endregion        #region  DataTable List        /// <summary>        /// 將集合類轉換成DataTable        /// </summary>        /// <param name="list">集合</param>        /// <returns></returns>        public static DataTable ListToDataTable<T>(this List<T> list)        {            DataTable result = new DataTable();            if (list.Count > 0)            {                PropertyInfo[] propertys = typeof(T).GetProperties();                foreach (PropertyInfo pi in propertys)                {                    result.Columns.Add(pi.Name, pi.PropertyType);                }                for (int i = 0; i < list.Count; i++)                {                    ArrayList tempList = new ArrayList();                    foreach (PropertyInfo pi in propertys)                    {                        object obj = pi.GetValue(list[i], null);                        if (obj != null && obj != DBNull.Value)                            tempList.Add(obj);                    }                    object[] array = tempList.ToArray();                    result.LoadDataRow(array, true);                }            }            return result;        }        /// <summary>        /// 將datatable轉為list        /// </summary>        /// <typeparam name="T"></typeparam>        /// <param name="dt"></param>        /// <returns></returns>        public static List<T> DataTableToList<T>(this DataTable dt)        {            var list = new List<T>();            Type t = typeof(T);            var plist = new List<PropertyInfo>(typeof(T).GetProperties());            foreach (DataRow item in dt.Rows)            {                T s = System.Activator.CreateInstance<T>();                for (int i = 0; i < dt.Columns.Count; i++)                {                    PropertyInfo info = plist.Find(p => p.Name == dt.Columns[i].ColumnName);                    if (info != null)                    {                        if (!Convert.IsDBNull(item[i]))                        {                            info.SetValue(s, item[i], null);                        }                    }                }                list.Add(s);            }            return list;        }         #endregion    }}

　　

ASP.NETC#通用擴充函數之TypeParse 類型轉換方便多了