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Object.cs
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Object.cs
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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Text;
namespace RX
{
public static class Object
{
/// <summary>
/// 赋默认值
/// </summary>
/// <param name="obj"></param>
/// <param name="val"></param>
/// <returns></returns>
public static string DefaultValue(this object obj, object val)
{
if (obj == null)
return val.ToString();
if (string.IsNullOrEmpty(obj.ToString()))
return val.ToString();
return obj.ToString();
}
/// <summary>
/// 赋默认值
/// </summary>
/// <param name="obj"></param>
/// <param name="val"></param>
/// <returns></returns>
public static int DefaultValue(this object obj, object val, int flag)
{
if (obj == null)
return int.Parse(val.ToString());
return int.Parse(obj.ToString());
}
public static bool IsNull(this object o)
{
return (o == null);
}
public static bool IsNotNull(this object o)
{
return (o != null);
}
public static bool IsDBNull(this object obj)
{
return obj.IsType(typeof(DBNull));
}
public static bool IsType(this object obj, Type type)
{
return obj.GetType().Equals(type);
}
public static bool IsNullOrEmpty(this object o)
{
if (!o.IsNull())
{
return o.ToString().IsNullOrEmpty();
}
return true;
}
public static bool IsArray(this object obj)
{
return obj.IsType(typeof(Array));
}
public static short ToInt16(this object o)
{
short num = 0;
if (!o.IsNullOrEmpty())
{
num = o.ToString().ToInt16();
}
return num;
}
public static int ToInt32(this object o)
{
int num = 0;
if (!o.IsNullOrEmpty())
{
num = o.ToString().ToInt32();
}
return num;
}
public static long ToInt64(this object o)
{
long num = 0L;
if (!o.IsNullOrEmpty())
{
num = o.ToString().ToInt64();
}
return num;
}
public static int ToInteger(this object strValue)
{
return strValue.ToInteger(0);
}
public static int ToInteger(this object strValue, int defValue)
{
int result = 0;
int.TryParse(strValue.ToString(), out result);
if (result != 0)
{
return result;
}
return defValue;
}
public static decimal ToMoney(this object strValue)
{
return strValue.ToMoney(0M);
}
public static decimal ToMoney(this object strValue, decimal defValue)
{
decimal result = 0M;
decimal.TryParse(strValue.ToString(), out result);
if (!(result == 0M))
{
return result;
}
return defValue;
}
public static short ToSmallInt(this object strValue)
{
return strValue.ToSmallInt(0);
}
public static short ToSmallInt(this object strValue, short defValue)
{
short result = 0;
short.TryParse(strValue.ToString(), out result);
if (result != 0)
{
return result;
}
return defValue;
}
public static string ToStringEmpty(this object o)
{
if (!o.IsNull())
{
return o.ToString();
}
return string.Empty;
}
public static byte ToTinyInt(this object strValue)
{
return strValue.ToTinyInt(0);
}
public static byte ToTinyInt(this object strValue, byte defValue)
{
byte result = 0;
byte.TryParse(strValue.ToString(), out result);
if (result != 0)
{
return result;
}
return defValue;
}
public static T ToType<T>(this object value)
{
return (T)value;
}
public static int ToInt(this object strValue, int defValue)
{
int result = 0;
int.TryParse(strValue.ToString(), out result);
if (result != 0)
return result;
return defValue;
}
public static object GetPropertyValue(this object obj, string propertyName)
{
return obj.GetType().GetProperty(propertyName).GetValue(obj, (object[])null);
}
public static TProperty GetPropertyValue<T, TProperty>(this T obj, string propertyName)
{
return (TProperty)obj.GetType().GetProperty(propertyName).GetValue((object)obj, (object[])null);
}
public static T ConvertTo<T>(this object value)
{
return value.ConvertTo<T>(default(T));
}
public static T ConvertTo<T>(this object value, T defaultValue)
{
if (value != null)
{
Type type = typeof(T);
TypeConverter converter1 = TypeDescriptor.GetConverter(value);
if (converter1 != null && converter1.CanConvertTo(type))
return (T)converter1.ConvertTo(value, type);
TypeConverter converter2 = TypeDescriptor.GetConverter(type);
if (converter2 != null)
{
try
{
if (converter2.CanConvertFrom(value.GetType()))
return (T)converter2.ConvertFrom(value);
}
catch
{
}
}
}
return defaultValue;
}
public static T ConvertTo<T>(this object value, T defaultValue, bool ignoreException)
{
if (!ignoreException)
return value.ConvertTo<T>();
try
{
return value.ConvertTo<T>();
}
catch
{
return defaultValue;
}
}
public static void CheckOnNull(this object @this, string parameterName)
{
if (@this.IsNull())
throw new ArgumentNullException(parameterName);
}
public static void CheckOnNull(this object @this, string parameterName, string message)
{
if (@this.IsNull())
throw new ArgumentNullException(parameterName, message);
}
public static T UnsafeCast<T>(this object value)
{
if (!value.IsNull())
return (T)value;
return default(T);
}
public static T SafeCast<T>(this object value)
{
if (!(value is T))
return default(T);
return value.UnsafeCast<T>();
}
public static bool InstanceOf<T>(this object value)
{
return value is T;
}
public static bool IsBetween<T>(this IComparable<T> t, T minT, T maxT)
{
if (t.CompareTo(minT) >= 0)
return t.CompareTo(maxT) <= 0;
return false;
}
public static bool IsBetween(this IComparable t, object minT, object maxT)
{
if (t.CompareTo(minT) >= 0)
return t.CompareTo(maxT) <= 0;
return false;
}
}
}