Is there any way to pass Output of one workflow to another without using outarguments? - workflow-foundation-4

Question

I have recently started working with Workflows.I am able to pass output of one activity as input to another through making use of OutArgument .Is it possible without using OutArgument.
If Possible please suggest me how?
Thanks all

Answer 1

You can use a workflow extension to act as a repository of variables in the scope of the whole workflow.
Create a workflow extension that contains properties.
Add the extension to the workflow application.
Set or Get the value of the properties from within Activities.
See https://msdn.microsoft.com/en-us/library/ff460215(v=vs.110).aspx
In response to your comment below.
You are wrong in your assumption. The extension "holds" the output from activity 1 which is then available to activity 2.
For example:
Create a class to hold properties:
public class PropertyStoreExtension
{
int _myProperty
public int MyProperty
{
get
{
return this._myProperty;
}
set
{
this._myProperty = value;
}
}
}
Add this as an extension to your workflow:
PropertyStoreExtension propertyStoreExtension = new PropertyStoreExtension
WorkflowInvoker myWorkflowInstence = new
WorkflowInvoker(myWorkflowDefinition());
myWorkflowInstence.Extensions.Add(propertyStoreExtension);
myWorkflowInstence.Invoke()
Your workflow contains 2 activities:
The first takes its "output" and stores it in the extension.
public class Activity1_SetProperty: CodeActivity
{
protected override void Execute(CodeActivityContext context)
{
PropertyStoreExtension pse =context.GetExtension<PropertyStoreExtension>();
if (pse != null)
{
pse.MyProperty=outputValue;
}
}
}
The second gets the value out of the extension.
public class Activity2_GetProperty: CodeActivity
{
protected override void Execute(CodeActivityContext context)
{
PropertyStoreExtension pse =context.GetExtension<PropertyStoreExtension>();
if (pse != null)
{
int intputValue; = pse.MyProperty
}
}
}