.NET Framework Class Library
SatelliteContractVersionAttribute Class

Instructs a ResourceManager object to ask for a particular version of a satellite assembly.

Inheritance Hierarchy
SystemObject
   SystemAttribute
    System.ResourcesSatelliteContractVersionAttribute

Namespace:   System.Resources
Assembly:  mscorlib (in mscorlib.dll)
Syntax
<[%$TOPIC/zckwy1ak_en-us_VS_110_3_0_0_0_0%](True)> _
<[%$TOPIC/zckwy1ak_en-us_VS_110_3_0_0_0_1%]([%$TOPIC/zckwy1ak_en-us_VS_110_3_0_0_0_2%].Assembly, AllowMultiple := False)> _
Public NotInheritable Class SatelliteContractVersionAttribute _
	Inherits [%$TOPIC/zckwy1ak_en-us_VS_110_3_0_0_0_3%]
[[%$TOPIC/zckwy1ak_en-us_VS_110_3_0_1_0_0%](true)]
[[%$TOPIC/zckwy1ak_en-us_VS_110_3_0_1_0_1%]([%$TOPIC/zckwy1ak_en-us_VS_110_3_0_1_0_2%].Assembly, AllowMultiple = false)]
public sealed class SatelliteContractVersionAttribute : [%$TOPIC/zckwy1ak_en-us_VS_110_3_0_1_0_3%]
[[%$TOPIC/zckwy1ak_en-us_VS_110_3_0_2_0_0%](true)]
[[%$TOPIC/zckwy1ak_en-us_VS_110_3_0_2_0_1%]([%$TOPIC/zckwy1ak_en-us_VS_110_3_0_2_0_2%]::Assembly, AllowMultiple = false)]
public ref class SatelliteContractVersionAttribute sealed : public [%$TOPIC/zckwy1ak_en-us_VS_110_3_0_2_0_3%]
[<[%$TOPIC/zckwy1ak_en-us_VS_110_3_0_3_0_0%]>]
[<[%$TOPIC/zckwy1ak_en-us_VS_110_3_0_3_0_1%](true)>]
[<[%$TOPIC/zckwy1ak_en-us_VS_110_3_0_3_0_2%]([%$TOPIC/zckwy1ak_en-us_VS_110_3_0_3_0_3%].Assembly, AllowMultiple = false)>]
type SatelliteContractVersionAttribute =  
    class 
        inherit [%$TOPIC/zckwy1ak_en-us_VS_110_3_0_3_0_4%] 
    end

The SatelliteContractVersionAttribute type exposes the following members.

Constructors
  NameDescription
Public method Supported by the XNA Framework Supported by Portable Class Library Supported in .NET for Windows Store apps SatelliteContractVersionAttributeInitializes a new instance of the SatelliteContractVersionAttribute class.
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Properties
  NameDescription
Public property TypeIdWhen implemented in a derived class, gets a unique identifier for this Attribute. (Inherited from Attribute.)
Public property Supported by the XNA Framework Supported by Portable Class Library Supported in .NET for Windows Store apps VersionGets the version of the satellite assemblies with the required resources.
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Methods
  NameDescription
Public method Supported by the XNA Framework Supported by Portable Class Library Supported in .NET for Windows Store apps EqualsInfrastructure. Returns a value that indicates whether this instance is equal to a specified object. (Inherited from Attribute.)
Public method Supported by the XNA Framework Supported by Portable Class Library Supported in .NET for Windows Store apps GetHashCodeReturns the hash code for this instance. (Inherited from Attribute.)
Public method Supported by the XNA Framework Supported by Portable Class Library Supported in .NET for Windows Store apps GetTypeGets the Type of the current instance. (Inherited from Object.)
Public method IsDefaultAttributeWhen overridden in a derived class, indicates whether the value of this instance is the default value for the derived class. (Inherited from Attribute.)
Public method Supported by the XNA Framework MatchWhen overridden in a derived class, returns a value that indicates whether this instance equals a specified object. (Inherited from Attribute.)
Public method Supported by the XNA Framework Supported by Portable Class Library Supported in .NET for Windows Store apps ToStringReturns a string that represents the current object. (Inherited from Object.)
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Explicit Interface Implementations
  NameDescription
Explicit interface implemetation Private method _AttributeGetIDsOfNamesMaps a set of names to a corresponding set of dispatch identifiers. (Inherited from Attribute.)
Explicit interface implemetation Private method _AttributeGetTypeInfoRetrieves the type information for an object, which can be used to get the type information for an interface. (Inherited from Attribute.)
Explicit interface implemetation Private method _AttributeGetTypeInfoCountRetrieves the number of type information interfaces that an object provides (either 0 or 1). (Inherited from Attribute.)
Explicit interface implemetation Private method _AttributeInvokeProvides access to properties and methods exposed by an object. (Inherited from Attribute.)
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Remarks

Desktop Apps

In desktop apps, the SatelliteContractVersionAttribute attribute establishes a contract between a main assembly and all its satellites. You apply this attribute to your main assembly, and pass it the version number of the satellite assemblies that will work with this version of the main assembly. When the resource manager ( ResourceManager object) looks up resources, it explicitly loads the satellite version specified by this attribute on the main assembly.

When you update the main assembly, you increment its assembly version number. However, you might not want to ship new copies of your satellite assemblies if the existing ones are compatible with your app. In this case, increment the main assembly's version number but leave the satellite contract version number the same. The resource manager will use your existing satellite assemblies.

If you want to revise a satellite assembly but not the main assembly, increment the version number on your satellite. In this case, ship a publisher policy assembly along with your satellite assembly stating that your new satellite assembly has backward compatibility with your old satellite assembly. The resource manager will still use the old contract number written into your main assembly based on the SatelliteContractVersionAttribute attribute; however, the loader will bind to the satellite assembly version that is specified by the policy assembly.

A vendor of a shared component uses a publisher policy assembly to make a compatibility statement about a particular version of a released assembly. A publisher policy assembly is a strongly named assembly that has a name in the format policy.<major>.<minor>.<ComponentAssemblyName>, and is registered in the global assembly cache. The publisher policy is generated from an XML configuration file (see the <bindingRedirect> element) by using the Al.exe (Assembly Linker) tool. The Assembly Linker is used with the /link option to link the XML configuration file to a manifest assembly, which is then stored in the global assembly cache. The publisher policy assemblies can be used when a vendor ships a maintenance release (service pack) that contains bug fixes.

Windows Store Apps

This attribute is ignored in Windows Store apps, because package resource index (PRI) files do not have versioning semantics. In addition, the Windows Store packaging model requires all resources to ship in the same package, with no possibility of redeploying satellite assemblies or PRI files.

Version Information

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

.NET for Windows Store apps

Supported in: Windows 8

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone 8, Silverlight 8.1
Platforms

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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.