ContractAbbreviatorAttribute 類別

定義

public ref class ContractAbbreviatorAttribute sealed : Attribute

[System.AttributeUsage(System.AttributeTargets.Method, AllowMultiple=false)]
[System.Diagnostics.Conditional("CONTRACTS_FULL")]
public sealed class ContractAbbreviatorAttribute : Attribute

[<System.AttributeUsage(System.AttributeTargets.Method, AllowMultiple=false)>]
[<System.Diagnostics.Conditional("CONTRACTS_FULL")>]
type ContractAbbreviatorAttribute = class
    inherit Attribute

Public NotInheritable Class ContractAbbreviatorAttribute
Inherits Attribute

繼承

Object

Attribute

ContractAbbreviatorAttribute

屬性

AttributeUsageAttribute ConditionalAttribute

範例

以下範例示範如何為代碼合約建立縮寫名稱，這些合約在多種方法中重複出現。

using System.Diagnostics.Contracts;  

public class MyClass   
{  
   public int State { get; }  
   public int Data { get; }  

   [ ContractAbbreviator ]  
   private void DataAndStateUnchanged()   
   {  
      Contract.Ensures( this .State == Contract.OldValue(this.State));  
      Contract.Ensures( this .Data == Contract.OldValue(this.Data));  
   }  

   [ ContractAbbreviator ]  
   private void InStateZeroAndUnchanged()   
   {  
      Contract.Requires( this.State == 0);  
      DataAndStateUnchanged();  
   }  

   public void Method1(...)   
   {  
      InStateZeroAndUnchanged();  
      ...  
   }  

   public void Method2(...)   
   {  
      InStateZeroAndUnchanged();  
      ...  
   }  

   public void Method3(...)  
   {  
      Contract.Requires(this .State == 1);  
      DataAndStateUnchanged();  
   }  
}