Marking WF XAML serializable

Question

Hello,

I have created a workflow (XAML), compiled it and now like to run it. For that I am loading compiled DLLs in a AppDomain somthing like this

private IDictionary<string, object> LoadWorkflowAssemblyInSeperateAppDomainExecuteAndUnload(string workflowLocation, Dictionary<string, object> inputParameters, string prefix, string workflowName)
        {
            string assemblyFullPath = GetAssemblyPath(workflowLocation, prefix, workflowName);
            var evidence = new Evidence(AppDomain.CurrentDomain.Evidence);
            string temp = CommonFunctions.GetFolderName(assemblyFullPath);
            AppDomain subDomain = AppDomain.CreateDomain("WorkflowExecutionDomain", evidence, temp, Path.GetFullPath(assemblyFullPath), true);
            string assmeblyFullName = AssemblyName.GetAssemblyName(assemblyFullPath).FullName;
            object workflowClass = subDomain.CreateInstanceAndUnwrap(assmeblyFullName, workflowName);
            var workflowExecutionResponse = WorkflowInvoker.Invoke(workflowClass as Activity, inputParameters);
            AppDomain.Unload(subDomain);
            return workflowExecutionResponse;
        }

But while loading this gives me error that workflowclass which I am trying to load is not marked as serializable.

How can I mark it Serializable? Is there any attribute which I can add in XAML to make this class serializable?

Please advice.

regards,

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Software Engineer