Microsoft Windows Workflow Foundation 4.0 Cookbook

Creating a FileWriter activity

CodeActivity is an abstract class inherited from Activity. We can put our logic code in its Execute method. In this task, we are going to create an activity that will write data to a text file.

How to do it...

1. Create the FileWriter activity:

   Add a new code file to ActivityLibrary project named FileWriter.cs. Then replace all default code with the following code:

   using System; using System.Activities; using System.Threading; public sealed class FileWriter : CodeActivity { [RequiredArgument] public InArgument<string> fileName { get; set; } [RequiredArgument] public InArgument<string> fileData { get; set; } protected override void Execute(CodeActivityContext context) { string lines = fileData.Get(context); // Write ...