/// <summary>获取成员绑定的显示名，优先DisplayName，然后Description</summary>
/// <param name="member">成员对象</param>
/// <param name="inherit">是否从继承对象中搜索</param>
/// <returns></returns>
public static string YusGetDesc(this MemberInfo member, bool inherit = true)
{
DescriptionAttribute customAttribute = member.YusGetCustomAttribute <DescriptionAttribute>(inherit);
if (customAttribute != null && !customAttribute.Description.YusNullOrWhiteSpace())
{
return(customAttribute.Description);
}
return((string)null);
}
/// <summary>获取自定义属性的值。可用于ReflectionOnly加载的程序集</summary>
/// <typeparam name="TAttribute"></typeparam>
/// <typeparam name="TResult"></typeparam>
/// <param name="target">目标对象</param>
/// <param name="inherit">是否递归</param>
/// <returns></returns>
public static TResult GetCustomAttributeValue <TAttribute, TResult>(this MemberInfo target, bool inherit = true) where TAttribute : Attribute
{
if (target == null)
{
return(default(TResult));
}
try
{
var list = CustomAttributeData.GetCustomAttributes(target);
if (list != null && list.Count > 0)
{
foreach (var item in list)
{
if (typeof(TAttribute).FullName != item.Constructor.DeclaringType.FullName)
{
continue;
}
var args = item.ConstructorArguments;
if (args != null && args.Count > 0)
{
return((TResult)args[0].Value);
}
}
}
if (inherit && target is Type)
{
target = (target as Type).BaseType;
if (target != null && target != typeof(object))
{
return(GetCustomAttributeValue <TAttribute, TResult>(target, inherit));
}
}
}
catch
{
// 出错以后，如果不是仅反射加载，可以考虑正面来一次
if (!target.Module.Assembly.ReflectionOnly)
{
//var att = GetCustomAttribute<TAttribute>(target, inherit);
var att = target.YusGetCustomAttribute <TAttribute>(inherit);
if (att != null)
{
var pi = typeof(TAttribute).GetProperties().FirstOrDefault(p => p.PropertyType == typeof(TResult));
if (pi != null)
{
return((TResult)att.GetValue(pi));
}
}
}
}
return(default(TResult));
}
/// <summary>获取成员绑定的显示名，优先DisplayName，然后Description</summary>
/// <param name="member"></param>
/// <param name="inherit"></param>
/// <returns></returns>
public static string GetDescription(this MemberInfo member, bool inherit = true)
{
var att2 = member.YusGetCustomAttribute <DescriptionAttribute>(inherit);
if (att2 != null && !att2.Description.YusNullOrWhiteSpace())
{
return(att2.Description);
}
return(null);
}
/// <summary>获取成员绑定的显示名，优先DisplayName，然后Description</summary>
/// <param name="member"></param>
/// <param name="inherit"></param>
/// <returns></returns>
public static string GetDisplayName(this MemberInfo member, bool inherit = true)
{
var att = member.YusGetCustomAttribute <DisplayNameAttribute>(inherit);
if (att != null && !att.DisplayName.YusNullOrWhiteSpace())
{
return(att.DisplayName);
}
return(null);
}
/// <summary>
/// 获取指定泛型类型的自定义属性
/// </summary>
/// <typeparam name="T">要获取的属性类型</typeparam>
/// <param name="element">成员信息</param>
/// <param name="inherit">是否从继承对象中搜索</param>
/// <returns></returns>
public static T YusGetCustomAttribute <T>(this MemberInfo element, bool inherit) where T : Attribute
{
return((T)element.YusGetCustomAttribute(typeof(T), inherit));
}
