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Navigational Workflows Unleashed in WWF/ASP.NET 3.5

, 21 Oct 2008
Case-study on the internals of a Navigational Workflow engine for a fictional dating website called “World Wide Dating”.
datesite.zip
DateSite
App_Data
bin
database setup procedure
DateSite.csproj.user
Global.asax
images
complete.png
critical.png
logo2.png
warning.png
Profile.dbml
Profile.dbml.layout
Properties
Service References
NavigationWorkflow
bin
NavigationWorkflow.layout
Properties
Settings.settings
using System;

namespace DateSite
{
    /// <summary>
    /// Control to skip to different states within the navigational workflow and
    /// to illustrate how to redirect to an error page from the UI using the
    /// navigational workflow.
    /// </summary>
    public partial class NavigationPane : System.Web.UI.UserControl
    {
        private WorkflowManager _workflowManager;

        /// <summary>
        /// Page load code.
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void Page_Load(object sender, EventArgs e)
        {
            // create an instance of the navigational workflow manager
            _workflowManager = new WorkflowManager(Application, Session, Request, Response);
        }

        /// <summary>
        /// Skips to basics.aspx page if possible (else will redirect to genericError.aspx).
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void lnkBasics_Click(object sender, EventArgs e)
        {
            string pageToGoTo = _workflowManager.SkipToBasics();
            _workflowManager.ManagedRedirect(pageToGoTo);
        }

        /// <summary>
        /// Skips to appearance.aspx page if possible (else will redirect to genericError.aspx).
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void lnkAppearance_Click(object sender, EventArgs e)
        {
            string pageToGoTo = _workflowManager.SkipToAppearance();
            _workflowManager.ManagedRedirect(pageToGoTo);
        }

        /// <summary>
        /// Skips to lifestyle.aspx page if possible (else will redirect to genericError.aspx).
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void lnkLifestyle_Click(object sender, EventArgs e)
        {
            string pageToGoTo = _workflowManager.SkipToLifestyle();
            _workflowManager.ManagedRedirect(pageToGoTo);
        }

        /// <summary>
        /// Skips to interests.aspx page if possible (else will redirect to genericError.aspx).
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void lnkInterests_Click(object sender, EventArgs e)
        {
            string pageToGoTo = _workflowManager.SkipToInterests();
            _workflowManager.ManagedRedirect(pageToGoTo);
        }

        /// <summary>
        /// Skips to complete.aspx page if possible (else will redirect to genericError.aspx).
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void lnkComplete_Click(object sender, EventArgs e)
        {
            string pageToGoTo = _workflowManager.SkipToComplete();
            _workflowManager.ManagedRedirect(pageToGoTo);
        }

        /// <summary>
        /// Skips to the default.aspx page to allow user to create/retrieve/delete
        /// profiles and navigational workflows.
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void lnkNewWorkflow_Click(object sender, EventArgs e)
        {
            string pageToGoTo = _workflowManager.GetStartPage();
            _workflowManager.ManagedRedirect(pageToGoTo);
        }

        /// <summary>
        /// Illustrates how to navigate to an error page from the UI.
        /// Navigates to unknownError.aspx.
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void lnkGenerateUnknownError_Click(object sender, EventArgs e)
        {
            string pageToGoTo = _workflowManager.Error(DateSiteNavigation.ErrorType.Unknown);
            _workflowManager.ManagedRedirect(pageToGoTo);
        }
    }
}

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About the Author

Pero Matić
Software Developer (Senior) Plan A Software
United States United States
No Biography provided

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