Hosting a workflow in console application in .NET 4 - workflow-foundation-4

Question

How I can host a workflow in a console application? I googled enough and didn't find any good sample.

Answer 1

I am surprised you can't find an example as most basic examples are done using a console application. For example this one.
The workflow runtime is independent of the kind of host so something like this works just fine in a console application or equally well in an ASP.NET or WPF application for that matter.
var workflow = new Workflow1();
workflow.FirstName = "Maurice";
workflow.LastName = "de Beijer";
var result = WorkflowInvoker.Invoke(workflow);
Console.WriteLine(result["Greeting"]);

Answer 2

I have done something like the following where 'FeedManager' is the console app, ProcessAllImports and ProcessAllExportFeeds are code or xaml activities. Its simple but works well.
Hope this helps...
class FeedManager
{
static void Main(string[] args)
{
FeedManager fm = new FeedManager();
fm.Run(args);
}
private int Run(string[] args)
{
ProcessAllImports importProcess = new ProcessAllImports();
List<Feed> importFeedSuccesses = new List<Feed>();
List<Feed> importFeedsFailure = new List<Feed>();
ProcessAllExportFeeds exportProcess = new ProcessAllExportFeeds();
List<Feed> exportFeedSuccesses = new List<Feed>();
List<Feed> exportFeedsFailure = new List<Feed>();
try
{
IDictionary<string, object> importFeedsArgs = new Dictionary<string, object>
{
{ "FeedsSuccess", importFeedSuccesses },
{ "FeedsFailure", importFeedsFailure },
};
var importOutput = WorkflowInvoker.Invoke(importProcess, importFeedsArgs);
bool importSuccess = (bool)importOutput["Success"];
importFeedSuccesses = (List<Feed>)importOutput["FeedsSuccess"];
importFeedsFailure = (List<Feed>)importOutput["FeedsFailure"];
IDictionary<string, object> exportFeedsArgs = new Dictionary<string, object>
{
{ "FeedsSuccess", exportFeedSuccesses },
{ "FeedsFailure", exportFeedsFailure },
};
var exportOutput = WorkflowInvoker.Invoke(exportProcess, exportFeedsArgs);
bool exportSuccess = (bool)exportOutput["Success"];
exportFeedSuccesses = (List<Feed>)exportOutput["FeedsSuccess"];
exportFeedsFailure = (List<Feed>)exportOutput["FeedsFailure"];
}
catch (Exception e)
{
return -1;
}