/// <summary>
/// 获取枚举项的Description特性的描述文字
/// </summary>
/// <param name="enumeration"> </param>
/// <returns> </returns>
public static string ToDescription(this Enum enumeration)
{
Type type = enumeration.GetType();
MemberInfo[] members = type.GetMember(enumeration.CastTo <string>());
if (members.Length > 0)
{
return(members[0].ToDescription());
}
return(enumeration.CastTo <string>());
}
/// <summary>
/// 可能有多重描述
/// 适用 值形式 1 2 4 8 16....
/// </summary>
/// <param name="enumeration"></param>
/// <param name="enum1"></param>
/// <param name="split"></param>
/// <returns></returns>
public static string ToMultiDescription(this Enum enumeration, char split = ' ')
{
Type type = enumeration.GetType();
string objName = enumeration.CastTo <string>();
string result = "";
MemberInfo[] members = type.GetMember(objName);
if (members.Length > 0)
{
result = members[0].ToDescription();
}
else
{
string[] strs = objName.Split(',');//CastTo结果是由逗号分隔的
if (strs.Length == 0)
{
result = objName;
}
else
{
for (int i = 0; i < strs.Length; i++)
{
MemberInfo[] tmpMembers = type.GetMember(strs[i].Trim());
if (tmpMembers.Length > 0)
{
result += tmpMembers[0].ToDescription() + split;
}
}
}
}
return(result.Trim(split));
}
/// <summary>
/// 初始化一个<see cref="EnumMetadata"/>类型的新实例
/// </summary>
public EnumMetadata(Enum enumItem)
{
if (enumItem == null)
{
return;
}
Value = enumItem.CastTo <int>();
Name = enumItem.ToString();
Display = enumItem.ToDescription();
}
/// <summary>
/// 拥有，enum1可能有其他一些其没有的枚举值
/// 枚举[FlagsAttribute]适用 值形式 1 2 4 8 16....
/// </summary>
/// <param name="enumeration"> </param>
/// <returns> </returns>
public static bool Have(this Enum enumeration, Enum enum1)
{
int thisN = enumeration.CastTo <int>();
int aimN = enum1.CastTo <int>();
while (aimN != 0)
{
if ((thisN & aimN) != aimN)
{
aimN = thisN & aimN;
}
else
{
return(true);
}
}
return(false);
}
/// <summary>
/// 完全包括
/// 枚举[FlagsAttribute]适用 值形式 1 2 4 8 16....
/// </summary>
/// <param name="enumeration"> </param>
/// <returns> </returns>
public static bool Contain(this Enum enumeration, Enum enum1)
{
return((enumeration.CastTo <int>() & enum1.CastTo <int>()) == enum1.CastTo <int>());
}
public static int ForSql(this Enum value)
{
return(value.CastTo <int>());
}