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RuleReadAttribute Class

Indicates that a property is read by a Rule. This class cannot be inherited.

Namespace:  System.Workflow.Activities.Rules
Assembly:  System.Workflow.Activities (in System.Workflow.Activities.dll)

[AttributeUsageAttribute(AttributeTargets.Method|AttributeTargets.Property, AllowMultiple = true)]
public sealed class RuleReadAttribute : RuleReadWriteAttribute

This attribute is used to support a forward chaining model that causes the re-evaluation of rules based on state change. The RuleReadAttribute, RuleInvokeAttribute, and RuleWriteAttribute classes each indicate the properties used to read a condition, write an action, and invoke a method. These attributes enable the workflow to only reevaluate rules that change the final output.

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

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

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

.NET Framework

Supported in: 3.5, 3.0

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