This documentation is archived and is not being maintained.

RuleExpressionInfo Class

An instance of this class is returned by the Validate method of an IRuleExpression expression.


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

public class RuleExpressionInfo

The RuleExpressionInfo type exposes the following members.

Public methodRuleExpressionInfoInitializes a new instance of the RuleExpressionInfo class.

Public propertyExpressionTypeGets the type of the expression.

Public methodEquals(Object)Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
Protected methodFinalizeAllows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public methodGetHashCodeServes as a hash function for a particular type. (Inherited from Object.)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Protected methodMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)

The ExpressionType property on RuleExpressionInfo provides the return type of the expression. For example, a binary expression, when evaluated, has a return type of Boolean; or, an expression that accesses a property might return an integer type.

The information in the RuleExpressionInfo can be used to validate the use of the expression. For example, a greater-than test cannot be used to compare two expressions if either returns a Boolean.

.NET Framework

Supported in: 4, 3.5, 3.0

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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

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