Pure XOML workflows and a custom root activity

re: Pure XOML workflows and a custom root activity

Erdnando — Fri, 22 May 2009 18:26:33 GMT

Hi. one question, what about the execute_code of an activity?,

is possible to add its equivalent in the xoml and rules files?

re: Pure XOML workflows and a custom root activity

Maurice — Sat, 28 Mar 2009 10:14:13 GMT

The sample you can find here (msdn.microsoft.com/.../ms741708.aspx) shows how to do so. Unfortunately rehosting the designer is quite involved so there is no real easy awnser.

Can not resolved custom activity type

Manjula — Sat, 28 Mar 2009 04:27:56 GMT

I'm developing a workflow designer and currently I can create state based and sequencial workflows with custom activities using that and save them to a SQL database as XOML. But when I tried to load previously created ( by my designer) workflow models which uses custom activities to the workflow designer, it says my custom activity type could not be resolved. Workflows without any custom activity can be load easily without any error. This error occurred in

_designSurface.BeginLoad(wfLoader);

method. I also printed all the types currently in TypeProvider of wfLoader and it had all the required activities. Can you give me some help to resolve this problem as quickly as possible? I only have two days to complete and demonstrate the project :(

re: Pure XOML workflows and a custom root activity

Ritu — Fri, 13 Mar 2009 09:14:14 GMT

Thanks a lot....this solved the issue

re: Pure XOML workflows and a custom root activity

Saleena — Sat, 07 Feb 2009 20:09:49 GMT

Thanks anywayz, I was able to resolve the issue. It was due to the Publictoken being null. I created a strong name and signed the assembly. and used the generated public token in the xoml file , installed the assembly into the GAC. After all this I was able to run the xoml workflow as well as monitor the it.

re: Pure XOML workflows and a custom root activity

Saleena — Sat, 07 Feb 2009 19:06:27 GMT

hi, Iam trying a similar example. I am able to run the xoml workflows, but when I try to monitor them using hte Workflow Monitor, I get an exception "+ e {"Could not load type 'ProcessDocWorkflowLibrary.BaseWorkFlow' from assembly 'ProcessDocWorkflowLibrary, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'.":"ProcessDocWorkflowLibrary.BaseWorkFlow"} System.Exception {System.TypeLoadException}

Can you please suggest me where I am making a mistake.

The BaseWOrkflow resides in the ProcessDocWorkflowLibrary (xoml + code). The rest of the workflows derive from this base workflow and are xoml only.

re: Pure XOML workflows and a custom root activity

splendour — Mon, 01 Dec 2008 06:22:37 GMT

Thank you very much. I thought this problem for a long time~~~

re: Pure XOML workflows and a custom root activity

ryan — Fri, 07 Nov 2008 04:07:43 GMT

I got problem for loading dll.

Error: "CreateInstance failed for type 'ActivitiesLibrary.BaseWorkflow'. Exception has been thrown by the target of an invocation. "

my solution has two project: one is "consoleProject" which contains one No-code(pure xoml) workflow(wf.xoml) and program.cs .

one is "ActivitiesLibrary" which contains one custom activity and one BaseWorkflow(custom root activity:contains the class BaseWorkflow that is derived from SequentialWorkflowActivity and is the base class we want to use for our wf.xoml. )

So consoleProject needs to get .dll generated by ActivitiesLibrary. the thing is it only works when i Manually add the reference to consoleProject. if I delete the reference and use addAssemblyReference to get the path. it wont work.

Here is the codes:

the baseWorkflow classe in "ActivitiesLibrary"

namespace ActivitiesLibrary

{

public sealed partial class BaseWorkflow : SequentialWorkflowActivity

{

// The actual code

}

the xml file of wf.xoml in "consoleProject"

<ns0:BaseWorkflow x:Name="wf" xmlns="schemas.microsoft.com/.../workflow" xmlns:x="schemas.microsoft.com/.../xaml"

xmlns:ns0="clr-namespace:ActivitiesLibrary;Assembly=ActivitiesLibrary, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null">

</ns0:BaseWorkflow>

Program.cs

TypeProvider typeProvider = new TypeProvider(WorkflowRuntime);

typeProvider.AddAssemblyReference(@"F:\Activities.dll");

workflowRuntime.AddService(typeProvider);

try

{

XmlReader reader = XmlReader.Create("wf.xoml");

WorkflowInstance instance = workflowRuntime.CreateWorkflow(reader, null, null);

instance.Start();

re: Pure XOML workflows and a custom root activity

fadi — Thu, 30 Oct 2008 08:22:53 GMT

I'm facing the same problem but when trying to load the designer in a re-hosted designer environment, Do you have any info about that? thanks

Exploring Workflow Foundation Part 2: Custom Activities - Code generation during compilation « Hungry for Knowledge

Sat, 26 Jul 2008 14:03:11 GMT

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re: Pure XOML workflows and a custom root activity

fgn — Tue, 01 Jul 2008 10:41:46 GMT

Actualy sample code will be more helpfull..

Pure XOML workflows and a custom root activity

Mighell's Mobile Blog — Thu, 24 Jan 2008 15:13:22 GMT

Che un Workflow possa essere definito attraverso una sintassi xml-like, è ormai cosa nota. Che questa

Pure XOML workflows and a custom root activity

{ The Smoking Code } — Thu, 24 Jan 2008 14:05:39 GMT

Pure XOML workflows and a custom root activity

re: Pure XOML workflows and a custom root activity

andre — Wed, 12 Dec 2007 09:50:07 GMT

thanks, exactly what I needed :)