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This topic applies to Windows Workflow Foundation 4 (WF4).
This section contains samples that demonstrate advanced custom activities in Windows Workflow Foundation (WF).
In This Section
- Policy Activity in .NET Framework 4
Demonstrates how the Policy4 activity allows Windows Workflow Foundation in .NET Framework version 3.5 (WF 3.5) RuleSet objects to be used in Windows Workflow Foundationin .NET Framework version 4 (WF 4) directly by using the rules engine that is shipped in WF 3.5.
- Custom Activity to Switch on a Range of Values
Demonstrates how to create a custom activity that extends the use of a Switch.
- LINQ to Objects Activity
Demonstrates how to create an activity to use LINQ to Objects to query elements in a collection.
- LINQ to SQL
Demonstrates how to create an activity to use LINQ to SQL query entities from tables in SQL Server databases.
- Using the InvokePowerShell Activity
Demonstrates how to invoke Windows PowerShell commands using the InvokePowerShell activity.
- RangeEnumeration Activity
Demonstrates how to create a custom activity that iterates over a collection of numbers.
- Regular Expression Activities
Demonstrates how to create a set of activities that expose the regular expression functionality of the System.Text.RegularExpressions namespace.
- SendMail Custom Activity
Demonstrates how to create a custom activity that derives from AsyncCodeActivity to send mail using SMTP for use within a workflow application.
- For Activity
Demonstrates how to build a custom activity that inherits from NativeActivity and use it in a workflow to iterate over a range of values.
- Wait For Input Activity
Demonstrates how to create named bookmarks in a workflow.
- Throttled Parallel ForEach
Demonstrates how theThrottleParallelForEachactivity is similar to the ParallelForEach activity with the one exception that it allows setting a concurrency factor to restrict the number of simultaneous branches to execute.
- Entity Activities
Demonstrates how to use the ADO.NET Entity Framework with Windows Workflow Foundation to simplify data access.
- Database Access Activities
Demonstrates how to create activities that allow accessing databases to retrieve or modify information and use ADO.NET to access the database.
- CommentOut Activity
Demonstrates how to write a custom activity that removes other activities from the path of execution, effectively commenting them out.
- Externalized Policy Activity in .NET Framework 4
Demonstrates how the ExternalizedPolicy4 activity allows executing existing Windows Workflow Foundation in .NET Framework version 3.5 (WF 3.5) RuleSet objects in Windows Workflow Foundation in .NET Framework version 4 (WF 4) directly by using the rules engine that is shipped in WF 3.5.
- NoPersistScope Activity
Demonstrates how to manipulate a non-serializable and disposable state within a workflow.
- Non-Generic ForEach
Demonstrates how to create a non-generic version of the ForEach activity.
- Non-Generic ParallelForEach
Demonstrates how to create a non-generic version of the ParallelForEach activity.
- Get WorkflowInstanceId
Demonstrates how to use the custom activity,GetWorkflowInstanceId, to return the workflow instance ID.
Build Date: 2012-03-02