/// <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, Boolean 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 (!TypeX.Equal(typeof(TAttribute), item.Constructor.DeclaringType))
{
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.GetCustomAttribute <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"></param>
/// <param name="inherit">是否递归</param>
/// <returns></returns>
public static TResult GetCustomAttributeValue <TAttribute, TResult>(this Type target, Boolean inherit)
{
if (target == null)
{
return(default(TResult));
}
var list = CustomAttributeData.GetCustomAttributes(target);
if (list != null && list.Count > 0)
{
foreach (var item in list)
{
if (!TypeX.Equal(typeof(TAttribute), item.Constructor.DeclaringType))
{
continue;
}
var args = item.ConstructorArguments;
if (args != null && args.Count > 0)
{
return((TResult)args[0].Value);
}
}
}
if (inherit)
{
target = target.BaseType;
if (target != null && target != typeof(Object))
{
return(GetCustomAttributeValue <TAttribute, TResult>(target, inherit));
}
}
return(default(TResult));
}