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Activity.CacheMetadata Method

Creates and validates a description of the activity’s arguments, variables, child activities, and activity delegates.

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

protected virtual void CacheMetadata(
	ActivityMetadata metadata
)

Parameters

metadata
Type: System.Activities.ActivityMetadata

The activity’s metadata that encapsulates the activity’s arguments, variables, child activities, and activity delegates.

The workflow runtime uses the default implementation of CacheMetadata to ensure correct construction of a workflow as well as to manage runtime relationships and lifetime rules. The default implementation of CacheMetadata examines the public properties of the activity type using the type’s TypeDescriptor. These public members are of type Argument, Variable, [T:System.Collections.Generic.IEnumerable<T:System.Activities.Variable>], Activity, [T:System.Collections.Generic.IEnumerable<T:System.Activities.Activity>], or ActivityDelegate. You can override this method to customize the building of the activity’s run-time description and to provide custom validation logic.

.NET Framework

Supported in: 4.6, 4.5, 4

.NET Framework Client Profile

Supported in: 4
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