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PersistenceProvider::Update Method (Object^, TimeSpan)

.NET Framework (current version)

Other Versions

When implemented in a derived class, updates service state records in the persistence store.

Namespace: System.ServiceModel.Persistence
Assembly: System.WorkflowServices (in System.WorkflowServices.dll)

Syntax

C++

public:
virtual Object^ Update(
	Object^ instance,
	TimeSpan timeout
) abstract

Parameters

instance: Type: System::Object^
The actual instance state.

timeout: Type: System::TimeSpan
The time period after which the persistence provider aborts this attempt.

Return Value

Type: System::Object^

The instance token corresponding to the state just saved. This can be passed to LoadIfChanged to determine whether the state in the persistence store differs from the state when Create was called.

Examples

The following code demonstrates how to implement the Update method.

public override object Update(object instance, TimeSpan timeout)
{
    base.ThrowIfDisposedOrNotOpen();
    this.factory.Update(this.Id, instance, timeout);
    return null;
}

Version Information

.NET Framework
Available since 3.5