ContractAbbreviatorAttribute Class

Defines abbreviations that you can use in place of the full contract syntax.

Namespace:   System.Diagnostics.Contracts
Assembly:  mscorlib (in mscorlib.dll)

Inheritance Hierarchy

[AttributeUsageAttribute(AttributeTargets.Method, AllowMultiple = false)]
public sealed class ContractAbbreviatorAttribute : Attribute
[AttributeUsageAttribute(AttributeTargets::Method, AllowMultiple = false)]
public ref class ContractAbbreviatorAttribute sealed : Attribute
[<AttributeUsageAttribute(AttributeTargets.Method, AllowMultiple = false)>]
type ContractAbbreviatorAttribute = 
        inherit Attribute
<AttributeUsageAttribute(AttributeTargets.Method, AllowMultiple := False)>
Public NotInheritable Class ContractAbbreviatorAttribute
	Inherits Attribute
System_CAPS_pubmethod ContractAbbreviatorAttribute

Initializes a new instance of the ContractAbbreviatorAttribute class.


When implemented in a derived class, gets a unique identifier for this Attribute.(Inherited from Attribute.)

System_CAPS_pubmethod Equals

This API supports the product infrastructure and is not intended to be used directly from your code. Returns a value that indicates whether this instance is equal to a specified object.(Inherited from Attribute.)

System_CAPS_pubmethod GetHashCode

Returns the hash code for this instance.(Inherited from Attribute.)

System_CAPS_pubmethod GetType

Gets the Type of the current instance.(Inherited from Object.)

System_CAPS_pubmethod IsDefaultAttribute

When overridden in a derived class, indicates whether the value of this instance is the default value for the derived class.(Inherited from Attribute.)

System_CAPS_pubmethod Match

When overridden in a derived class, returns a value that indicates whether this instance equals a specified object.(Inherited from Attribute.)

System_CAPS_pubmethod ToString

Returns a string that represents the current object.(Inherited from Object.)

Explicit Interface Implementations
System_CAPS_pubinterface System_CAPS_privmethod _AttributeGetIDsOfNames

Maps a set of names to a corresponding set of dispatch identifiers.(Inherited from Attribute.)

System_CAPS_pubinterface System_CAPS_privmethod _AttributeGetTypeInfo

Retrieves the type information for an object, which can be used to get the type information for an interface.(Inherited from Attribute.)

System_CAPS_pubinterface System_CAPS_privmethod _AttributeGetTypeInfoCount

Retrieves the number of type information interfaces that an object provides (either 0 or 1).(Inherited from Attribute.)

System_CAPS_pubinterface System_CAPS_privmethod _AttributeInvoke

Provides access to properties and methods exposed by an object.(Inherited from Attribute.)


The following example demonstrates how to create abbreviated names for code contracts that are repeated in several methods.

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);

   public void Method1(...) 

   public void Method2(...) 

   public void Method3(...)
      Contract.Requires(this .State == 1);
Version Information
Universal Windows Platform
Available since 4.5
.NET Framework
Available since 4.5
Portable Class Library
Supported in: portable .NET platforms
Windows Phone Silverlight
Available since 8.0
Windows Phone
Available since 8.1
Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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