by Keyvan Nayyeri via Keyvan Nayyeri on 7/9/2007 3:43:16 PM
As mentioned in the previous post, it's possible to create a custom workflow runtime service in two ways: deriving from a built-in runtime service or create a custom workflow runtime from an upper level by deriving from WorkflowRuntimeService class.
In both cases you need to create a class and inherit it from one of base classes then override some or all of their methods based on your needs. Apparently developing a runtime service based on WorkflowRuntimeService is harder than other built-in runtime services.
I don't want to bother you with writing a custom tracking service because it's already done on MSDN and is the easiest runtime service to implement so just give an introduction to the task of building a runtime service from WorkflowRuntimeService and leave the implementation to you because it's beyond a blog post and I can't find a good idea to create a runtime service for it, too.
WorkflowRuntimeService has four method that you can override in your custom runtime services:
Therefore you can build a custom workflow service by deriving from this base class (and other base classes derived from this one) and overriding some or all methods from the base class.
using System;
using System.Collections.Generic;
using System.Text;
using System.Workflow.Runtime;
using System.Workflow.Runtime.Hosting;
namespace CustomWorkflowService
{
public class CustomRuntime : WorkflowRuntimeService
protected override void OnStarted()
// OnStarted() Implementation
base.OnStarted();
}
protected override void OnStopped()
// OnStopped() Implementation
base.OnStopped();
protected override void Start()
// Start() Implementation
base.Start();
protected override void Stop()
// Stop() Implementation
base.Stop();
After implementing your logic in this code, you can add or remove this service from runtime. In the next upcoming post I discuss about adding or removing a service from runtime.
Original Post: How to Create a Custom Workflow Runtime Service
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