ECDefense/公共库/EC.Utils/Extend/Ext.Convert.cs

using System;

namespace EC.Utils
{
	/// <summary>
	/// Ext
	/// 版 本：V3.0.0
	/// 版 权：EasyCode
	/// 作 者：LXC
	/// </summary>
	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;
			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 数值转换

		#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 日期转换

		#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 布尔转换

		#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 字符串转换

		/// <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;
			}
		}

		/// <summary>
		/// 判断是否为Null或者空
		/// </summary>
		/// <param name="obj">对象</param>
		/// <returns></returns>
		public static bool IsNullOrEmpty(this object obj)
		{
			if (obj == null)
				return true;
			else
			{
				string objStr = obj.ToString();
				return string.IsNullOrEmpty(objStr);
			}
		}
	}
}