前言
类型转换帮助类，包含下表中的方法：
| 方法名 | 方法解释 |
|---|---|
| ObjToInt | object转int |
| ObjToMoney | object转double |
| ObjToString | object转string |
| ObjToDecimal | object转decimal |
| ObjToDate | object转datetime |
| ObjToDateSplitYMD | object转datetime（yyyy-MM-dd） |
| ObjToDateSplitYMDHMS | object转datetime（yyyy-MM-dd HH:mm:ss） |
| ObjToDateY | object转datetime（yyyy） |
| ObjToDateYMD | object转datetime（yyyyMMdd） |
| ObjToDateYMDH | object转datetime（yyyyMMddHH） |
| ObjToDateYMDHMS | object转datetime（yyyyMMddHHmmss） |
| ObjToBool | object转bool |
| ObjToChar | object转char |
| ObjToStringBySplit | object转list |
| ObjToBase64String | object转base64 string |
| ObjToStringFromBase64 | base64 string转object |
代码示例
C#
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace VW.API.Common.Utils
{
/// <summary>
/// ConvertHelper 的摘要说明：格式转换帮助类
/// </summary>
public static class ConvertHelper
{
/// <summary>
/// obj->int
/// </summary>
/// <param name="thisValue"></param>
/// <returns>int</returns>
public static int ObjToInt(this object thisValue)
{
try
{
if (thisValue == null)
{
return 0;
}
if (thisValue != null && thisValue != DBNull.Value && int.TryParse(thisValue.ToString(), out int reval))
{
return reval;
}
return 0;
}
catch (Exception) { throw; }
}
/// <summary>
/// obj->double
/// </summary>
/// <param name="thisValue"></param>
/// <returns>double</returns>
public static double ObjToMoney(this object thisValue)
{
try
{
if (thisValue == null)
{
return 0;
}
if (thisValue != null && thisValue != DBNull.Value && double.TryParse(thisValue.ToString(), out double reval))
{
return reval;
}
return 0;
}
catch (Exception) { throw; }
}
/// <summary>
/// obj->string
/// </summary>
/// <param name="thisValue"></param>
/// <returns>string</returns>
public static string ObjToString(this object thisValue)
{
try
{
if (thisValue == null)
{
return "";
}
if (thisValue != null)
return thisValue.ToString();
return "";
}
catch (Exception) { throw; }
}
/// <summary>
/// obj->decimal
/// </summary>
/// <param name="thisValue"></param>
/// <returns>decimal</returns>
public static decimal ObjToDecimal(this object thisValue)
{
try
{
if (thisValue == null)
{
return 0;
}
if (thisValue != null && thisValue != DBNull.Value && decimal.TryParse(thisValue.ToString(), out decimal reval))
{
return reval;
}
return 0;
}
catch (Exception) { throw; }
}
/// <summary>
/// obj->datetime2
/// </summary>
/// <param name="thisValue"></param>
/// <returns>DateTime</returns>
public static DateTime ObjToDate2(this object thisValue)
{
try
{
return thisValue.ToString().Length switch
{
//年
4 => new DateTime(thisValue.ObjToInt(), 1, 1, 0, 0, 0),
//月
6 => new DateTime(thisValue.ToString().Substring(0, 4).ObjToInt(), thisValue.ToString().Substring(4, 2).ObjToInt(), 1, 0, 0, 0),
//日
8 => new DateTime(thisValue.ToString().Substring(0, 4).ObjToInt(), thisValue.ToString().Substring(4, 2).ObjToInt(), thisValue.ToString().Substring(6, 2).ObjToInt(), 0, 0, 0),
//时
10 => new DateTime(thisValue.ToString().Substring(0, 4).ObjToInt(), thisValue.ToString().Substring(4, 2).ObjToInt(), thisValue.ToString().Substring(6, 2).ObjToInt(), thisValue.ToString().Substring(8, 2).ObjToInt(), 0, 0),
//分钟
12 => new DateTime(thisValue.ToString().Substring(0, 4).ObjToInt(), thisValue.ToString().Substring(4, 2).ObjToInt(), thisValue.ToString().Substring(6, 2).ObjToInt(), thisValue.ToString().Substring(8, 2).ObjToInt(), thisValue.ToString().Substring(10, 2).ObjToInt(), 0),
_ => DateTime.MinValue,
};
}
catch (Exception) { throw; }
}
/// <summary>
/// obj->datetime
/// </summary>
/// <param name="thisValue"></param>
/// <returns>DateTime</returns>
public static DateTime ObjToDate(this object thisValue)
{
try
{
DateTime reval = DateTime.MinValue;
if (thisValue == null)
{
return reval;
}
if (thisValue != null && thisValue != DBNull.Value && DateTime.TryParse(thisValue.ToString(), out reval))
{
reval = Convert.ToDateTime(thisValue);
}
return reval;
}
catch (Exception) { throw; }
}
/// <summary>
/// obj->datetime（SplitYMD）
/// </summary>
/// <param name="thisValue"></param>
/// <returns>DateTime</returns>
public static string ObjToDateSplitYMD(this object thisValue)
{
try
{
if (thisValue == null)
{
return "";
}
return ObjToDate(thisValue).ToString("yyyy-MM-dd");
}
catch (Exception) { throw; }
}
/// <summary>
/// obj->datetime（SplitYMDHMS）
/// </summary>
/// <param name="thisValue"></param>
/// <returns>DateTime</returns>
public static string ObjToDateSplitYMDHMS(this object thisValue)
{
try
{
if (thisValue == null)
{
return "";
}
return ObjToDate(thisValue).ToString("yyyy-MM-dd HH:mm:ss");
}
catch (Exception) { throw; }
}
/// <summary>
/// obj->datetime（Y）
/// </summary>
/// <param name="thisValue"></param>
/// <returns>DateTime</returns>
public static string ObjToDateY(this object thisValue)
{
try
{
if (thisValue == null)
{
return "";
}
return ObjToDate(thisValue).ToString("yyyy");
}
catch (Exception) { throw; }
}
/// <summary>
/// obj->datetime（YMD）
/// </summary>
/// <param name="thisValue"></param>
/// <returns>DateTime</returns>
public static string ObjToDateYMD(this object thisValue)
{
try
{
if (thisValue == null)
{
return "";
}
return ObjToDate(thisValue).ToString("yyyyMMdd");
}
catch (Exception) { throw; }
}
/// <summary>
/// obj->datetime（YMDH）
/// </summary>
/// <param name="thisValue"></param>
/// <returns>DateTime</returns>
public static string ObjToDateYMDH(this object thisValue)
{
try
{
if (thisValue == null)
{
return "";
}
return ObjToDate(thisValue).ToString("yyyyMMddHH");
}
catch (Exception) { throw; }
}
/// <summary>
/// obj->datetime（YMDHMS）
/// </summary>
/// <param name="thisValue"></param>
/// <returns>DateTime</returns>
public static string ObjToDateYMDHMS(this object thisValue)
{
try
{
if (thisValue == null)
{
return "";
}
return ObjToDate(thisValue).ToString("yyyyMMddHHmmss");
}
catch (Exception) { throw; }
}
/// <summary>
/// obj->bool
/// </summary>
/// <param name="thisValue"></param>
/// <returns>bool</returns>
public static bool ObjToBool(this object thisValue)
{
try
{
if (thisValue == null)
{
return false;
}
if (thisValue != null && thisValue != DBNull.Value && bool.TryParse(thisValue.ToString(), out bool reval))
{
return reval;
}
return false;
}
catch (Exception) { throw; }
}
/// <summary>
/// obj->char
/// </summary>
/// <param name="thisValue"></param>
/// <returns>char</returns>
public static char ObjToChar(this object thisValue)
{
try
{
if (thisValue == null)
{
return ' ';
}
if (thisValue != null && thisValue != DBNull.Value && char.TryParse(thisValue.ToString(), out char reval))
{
return reval;
}
return ' ';
}
catch (Exception) { throw; }
}
/// <summary>
/// obj->List<string>
/// </summary>
/// <param name="thisValue"></param>
/// <param name="split"></param>
/// <returns>List<string></returns>
public static List<string> ObjToStringBySplit(this object thisValue, char[] split = null)
{
try
{
if (thisValue == null)
{
return new List<string>();
}
if (split == null || split.Length == 0)
{
split = new char[] { '；', ';', ',', '，', ' ' };
}
return thisValue.ToString().Split(split).ToList();
}
catch (Exception) { throw; }
}
/// <summary>
/// obj->string<string>
/// </summary>
/// <param name="thisValue"></param>
/// <param name="split"></param>
/// <returns>List<string></returns>
public static string ObjToStringByReplace(this object thisValue, string[] replace = null)
{
try
{
if (thisValue == null)
{
return "";
}
//-()&"*%（）
if (replace == null || replace.Length == 0)
{
replace = new string[] { "-", "(", ")", "&", "\"", "*", "%", "（", "）", "_" };
}
string returnValue = thisValue.ToString();
foreach (string r in replace)
{
returnValue = returnValue.Replace(r, $"\\{r}");
}
return returnValue;
}
catch (Exception) { throw; }
}
/// <summary>
/// obj->base64string
/// </summary>
/// <param name="thisValue"></param>
/// <returns>string</returns>
public static string ObjToBase64String(this object thisValue)
{
try
{
if (thisValue == null)
{
return "";
}
if (thisValue != null)
return Convert.ToBase64String(Encoding.UTF8.GetBytes($"{thisValue}"));
return "";
}
catch (Exception) { throw; }
}
/// <summary>
/// obj->string
/// </summary>
/// <param name="thisValue"></param>
/// <returns>string</returns>
public static string ObjToStringFromBase64(this object thisValue)
{
try
{
if (thisValue == null)
{
return "";
}
if (thisValue != null)
return System.Text.Encoding.UTF8.GetString(Convert.FromBase64String(thisValue.ToString()));
return "";
}
catch (Exception) { throw; }
}
}
}