[AttributeUsage(AttributeTargets.All, AllowMultiple = true)]
public class AttachDataAttribute : Attribute
{
public AttachDataAttribute(object key, object value)
{
this.Key = key;
this.Value = value;
} public object Key { get; private set; } public object Value { get; private set; }
}public static class AttachDataExtensions
{
public static object GetAttachedData(
this ICustomAttributeProvider provider, object key)
{
var attributes = (AttachDataAttribute[])provider.GetCustomAttributes(
typeof(AttachDataAttribute), false);
return attributes.First(a => a.Key.Equals(key)).Value;
} public static T GetAttachedData<T>(
this ICustomAttributeProvider provider, object key)
{
return (T)provider.GetAttachedData(key);
} public static object GetAttachedData(this Enum value, object key)
{
return value.GetType().GetField(value.ToString()).GetAttachedData(key);
} public static T GetAttachedData<T>(this Enum value, object key)
{
return (T)value.GetAttachedData(key);
}
}
请帮忙给这几行代码加上注释
public class AttachDataAttribute : Attribute
{
public AttachDataAttribute(object key, object value)
{
this.Key = key;
this.Value = value;
} public object Key { get; private set; } public object Value { get; private set; }
}public static class AttachDataExtensions
{
public static object GetAttachedData(
this ICustomAttributeProvider provider, object key)
{
var attributes = (AttachDataAttribute[])provider.GetCustomAttributes(
typeof(AttachDataAttribute), false);
return attributes.First(a => a.Key.Equals(key)).Value;
} public static T GetAttachedData<T>(
this ICustomAttributeProvider provider, object key)
{
return (T)provider.GetAttachedData(key);
} public static object GetAttachedData(this Enum value, object key)
{
return value.GetType().GetField(value.ToString()).GetAttachedData(key);
} public static T GetAttachedData<T>(this Enum value, object key)
{
return (T)value.GetAttachedData(key);
}
}
请帮忙给这几行代码加上注释
解决方案 »
免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货