Work with WPF in Workflow

Davin Martyn
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Introduction : Window Workflow can be used to customize the business logic. In this case we just use it to call the WCF service. The standard Activity Library introduced a number of low level activities. These low level activities include Assign, Add to Collection, Clear collection. The Windows Presentation Foundation can be use in two diffrent ways.

In code (like normal Widows Forms).
In XAML, HTML like code.

Create the Activity Library

Step 1 Open Visual Studio 2010.

Select File->New ->Project.
Select Activity Library.

After clicking the OK option, the Activity1.Xaml Window opens.

ac1`.gif

Create a WPF Application :

Step 2 : Go to Solution Explorer and right-click.

Go to Add-> New Item->WPF Application.
Write the below code.
Add Stack panel with a Main Window.xaml.

Panel :

<Window x:Class="WpfApplication1.MainWindow"
       xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
       xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
       Title="MainWindow" Height="350" Width="525">
    <Grid>
        <StackPanel>
            <Button Content="Run activity2"
      HorizontalAlignment="Left" Name="button1"
      Margin="20" Click="button1_Click" />
        </StackPanel>
    </Grid>
</Window>

Step 3 : Now go to the WPF Application and right-click.

Go to Add Reference->.NET.
Select System.Activities, ActivityLibrary.

Step 4 : Add new Activity for the new WPF Application.

Go to Solution Explorer and right-click.
Select Add-> New Item->Activity.

Step 5 : Now go to Activity1.xaml option and drag activity from Toolbox.

Select Flowchart, WritelLine activity.
Define Text Name activtiy2.

Step 6 : Now Go to the MaineWindow.xaml.cs option and write the below code.

Code :

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Activities;
using ActivityLibrary7;
namespace WpfApplication1
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        WorkflowApplication _application;

        public MainWindow()
        {
            InitializeComponent();
        }
        private void button1_Click(object sender, RoutedEventArgs e)
        {
            _application = new WorkflowApplication(new Activity2());
            _application.Run();
            MessageBox.Show("my workflow");
        }
    }
}

Step 7 : Now again go to MaineWindow.xaml option.

Add a Click - Event handler to MaineWindow.xaml.cs option.

Event :

private void button1_Click(object sender, RoutedEventArgs e)
        {
            _application = new WorkflowApplication(new Activity2());
            _application.Run();
            MessageBox.Show("my workflow");
        }

Step 8 : Go to Solution Explorer and right-click.