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Chapter 1. Workflow Program > Loading up a WF program from an XAML file
Loading up a WF program from an XAML file
In this task, we will run a WF program by loading it from an XAML file.
How to do it...
Create code to load up the workflow instance from an XAML string:
Open Program.cs file and change code as follow:
Code View: Scroll / Show Allusing System; using System.Activities; using System.Activities.Statements; using System.IO; using System.Collections; using System.Text; WF programloading, from XAML fileusing System.Activities.XamlIntegration; namespace LoadUpWorkflowFromXML { class Program { static void Main(string[] args) { string filePath= @"C:\WF4Cookbook\Chapter01\LoadUpWFFromXML\Workflow1.xaml"; string tempString=""; StringBuilder xamlWFString = new StringBuilder(); StreamReader xamlStreamReader = new StreamReader(filePath); while (tempString != null){ tempString = xamlStreamReader.ReadLine(); if (tempString != null) { xamlWFString.Append(tempString); } } Activity wfInstance = ActivityXamlServices.Load( new StringReader(xamlWFString.ToString())); WorkflowInvoker.Invoke(wfInstance); } } }We may need to change the file path according to our real environment.
