using System;
namespace Com.AppCode.Extend
{
public static partial class Ext
{
#region 数值转换
/// <summary>
/// 转换为整型
/// </summary>
/// <param name="data">数据</param>
public static int ToInt(this object data)
{
if (data == null)
return 0;
if (data is Enum)
return (int)data;
int result;
var success = int.TryParse(data.ToString(), out result);
if (success)
return result;
try
{
return Convert.ToInt32(ToDouble(data, 0));
}
catch (Exception)
{
return 0;
}
}
/// <summary>
/// 转换为可空整型
/// </summary>
/// <param name="data">数据</param>
public static int? ToIntOrNull(this object data)
{
if (data == null)
return null;
int result;
bool isValid = int.TryParse(data.ToString(), out result);
if (isValid)
return result;
return null;
}
/// <summary>
/// 转换为双精度浮点数
/// </summary>
/// <param name="data">数据</param>
public static double ToDouble(this object data)
{
if (data == null)
return 0;
double result;
return double.TryParse(data.ToString(), out result) ? result : 0;
}
/// <summary>
/// 转换为双精度浮点数,并按指定的小数位4舍5入
/// </summary>
/// <param name="data">数据</param>
/// <param name="digits">小数位数</param>
public static double ToDouble(this object data, int digits)
{
return Math.Round(ToDouble(data), digits);
}
/// <summary>
/// 转换为可空双精度浮点数
/// </summary>
/// <param name="data">数据</param>
public static double? ToDoubleOrNull(this object data)
{
if (data == null)
return null;
double result;
bool isValid = double.TryParse(data.ToString(), out result);
if (isValid)
return result;
return null;
}
/// <summary>
/// 转换为高精度浮点数
/// </summary>
/// <param name="data">数据</param>
public static decimal ToDecimal(this object data)
{
if (data == null)
return 0;
decimal result;
return decimal.TryParse(data.ToString(), out result) ? result : 0;
}
/// <summary>
/// 转换为高精度浮点数,并按指定的小数位4舍5入
/// </summary>
/// <param name="data">数据</param>
/// <param name="digits">小数位数</param>
public static decimal ToDecimal(this object data, int digits)
{
return Math.Round(ToDecimal(data), digits);
}
/// <summary>
/// 转换为可空高精度浮点数
/// </summary>
/// <param name="data">数据</param>
public static decimal? ToDecimalOrNull(this object data)
{
if (data == null)
return null;
decimal result;
bool isValid = decimal.TryParse(data.ToString(), out result);
if (isValid)
return result;
return null;
}
/// <summary>
/// 转换为可空高精度浮点数,并按指定的小数位4舍5入
/// </summary>
/// <param name="data">数据</param>
/// <param name="digits">小数位数</param>
public static decimal? ToDecimalOrNull(this object data, int digits)
{
var result = ToDecimalOrNull(data);
if (result == null)
return null;
return Math.Round(result.Value, digits);
}
#endregion
#region 日期转换
/// <summary>
/// 转换为日期
/// </summary>
/// <param name="data">数据</param>
public static DateTime ToDate(this object data)
{
if (data == null)
return DateTime.MinValue;
DateTime result;
return DateTime.TryParse(data.ToString(), out result) ? result : DateTime.MinValue;
}
/// <summary>
/// 转换为可空日期
/// </summary>
/// <param name="data">数据</param>
public static DateTime? ToDateOrNull(this object data)
{
if (data == null)
return null;
DateTime result;
bool isValid = DateTime.TryParse(data.ToString(), out result);
if (isValid)
return result;
return null;
}
#endregion
#region 布尔转换
/// <summary>
/// 转换为布尔值
/// </summary>
/// <param name="data">数据</param>
public static bool ToBool(this object data)
{
if (data == null)
return false;
bool? value = GetBool(data);
if (value != null)
return value.Value;
bool result;
return bool.TryParse(data.ToString(), out result) && result;
}
/// <summary>
/// 获取布尔值
/// </summary>
private static bool? GetBool(this object data)
{
switch (data.ToString().Trim().ToLower())
{
case "0":
return false;
case "1":
return true;
case "是":
return true;
case "否":
return false;
case "yes":
return true;
case "no":
return false;
default:
return null;
}
}
/// <summary>
/// 转换为可空布尔值
/// </summary>
/// <param name="data">数据</param>
public static bool? ToBoolOrNull(this object data)
{
if (data == null)
return null;
bool? value = GetBool(data);
if (value != null)
return value.Value;
bool result;
bool isValid = bool.TryParse(data.ToString(), out result);
if (isValid)
return result;
return null;
}
#endregion
#region 字符串转换
/// <summary>
/// 转换为字符串
/// </summary>
/// <param name="data">数据</param>
public static string ToString(this object data)
{
return data == null ? string.Empty : data.ToString().Trim();
}
#endregion
/// <summary>
/// 安全返回值
/// </summary>
/// <param name="value">可空值</param>
public static T SafeValue<T>(this T? value) where T : struct
{
return value ?? default(T);
}
/// <summary>
/// 是否为空
/// </summary>
/// <param name="value">值</param>
public static bool IsEmpty(this string value)
{
return string.IsNullOrWhiteSpace(value);
}
/// <summary>
/// 是否为空
/// </summary>
/// <param name="value">值</param>
public static bool IsEmpty(this Guid? value)
{
if (value == null)
return true;
return IsEmpty(value.Value);
}
/// <summary>
/// 是否为空
/// </summary>
/// <param name="value">值</param>
public static bool IsEmpty(this Guid value)
{
if (value == Guid.Empty)
return true;
return false;
}
/// <summary>
/// 是否为空
/// </summary>
/// <param name="value">值</param>
public static bool IsEmpty(this object value)
{
if (value != null && !string.IsNullOrEmpty(value.ToString()))
{
return false;
}
else
{
return true;
}
}
}
}
