Work with WPF in Workflow

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.

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.

• Select WPF project and right-click.
• Select Set As Start Project.

Step 9 : Now Press F5 and run the application.

Step 10 :  When we click in runactivity2 then a window pops up showing my workflow.