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This article mainly explains "what are the features of Attribute". The content of the explanation is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn what are the features of Attribute.

The copy code is as follows:

/ *

* Properti

, /

The copy code is as follows:

Using System

Using System.Collections.Generic

Using System.Linq

Using System.Web

/ / /

/ Summary description of DisAttribute

/ / /

Public class DisAttribute: Attribute

{

Private string _ message

/ / /

/ description

/ / /

Public string Message

{

Get {return _ message;}

}

Public DisAttribute (string message)

{

This._message = message

}

}

/ *

* Class

, /

The copy code is as follows:

Using System

Using System.Collections.Generic

Using System.EnterpriseServices

Using System.Linq

Using System.Web

Using System.Web.DynamicData

/ / /

/ Summary description of User

/ / /

[DisAttribute ("User"), TableName ("user"), Description ("user")]

Public class User

{

Private int? _ id

/ / /

/ Id

/ / /

[DisAttribute ("primary key")]

Public int? Id

{

Get {return _ id;}

Set {_ id = value;}

}

Private string _ name

/ / /

/ / name

/ / /

[DisAttribute ("name")]

Public string Name

{

Get {return _ name;}

Set {_ name = value;}

}

}

/ *

* get

, /

The copy code is as follows:

/ / get the property

User u = new User ()

Type _ t = u.GetType ()

Foreach (Attribute an in _ t.GetCustomAttributes (true))

{

If (a.GetType () .ToString () = = "DisAttribute")

{

DisAttribute _ da = (DisAttribute) a

If (_ da! = null)

{

Response.Write (_ da.Message + "

")

}

}

}

/ / get all attributes

U.Id = 888888

U.Name = "Eason Chan"

Foreach (PropertyInfo item in _ t.GetProperties ())

{

/ / Features

Attribute atr = item.GetCustomAttribute (typeof (DisAttribute))

If (atr.GetType () .ToString () = = "DisAttribute")

{

DisAttribute _ da = (DisAttribute) atr

If (_ da! = null)

{

Response.Write (_ da.Message + "

")

}

}

}

Thank you for your reading, the above is the content of "what are the Attribute features?" after the study of this article, I believe you have a deeper understanding of what Attribute features have, and the specific use needs to be verified in practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

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