Visio 2007 Desicion Tree Viewer Problem.. Rendering Fails.

Programmatically generating HTML visualizations of models using DM Add-ins the thread in sqlserverdatamining.com contains a code block listed below. This code doesn't work it fails in the statment : "helper.DrawDecisionTree(helper.ActivePage, parameter);" . It says "Visio rendering failed"..

I didn't understand the part "parameter.ConnectionName = "AdventureWorksConnection";" in the code block. Which type or object is expected by parameter.ConnectionName ? An Adomdconnection or Oledbconnection. Type is string but does it expect us the name of connection? Please help me because i didn't figure out the solution.

By the way i'm using Visio2007 and installed everything which has told in the article and added as reference.



Code Block
using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using Microsoft.SqlServer.DataMining.Office.Visio.Programability;

namespace DMDigramUsingViso
{
class Program
{
//This is the folder where the data mining addins have been installed.
public const string DMAddinInstallPath = @"C:Program Files (x86)Microsoft SQL Server 2005 DM Add-Ins";

//This is the name of the Visio template file for the data mining addins.
public const string VisioTemplateName = @"Microsoft Data Mining.vst";

//This is the name of the target HTML file.
public const string WebFileName = @"TargetMail.htm";

static void Main(string[] args)
{
try
{
string visioFile = DMAddinInstallPath + "\" + VisioTemplateName;
string webFile = System.IO.Directory.GetCurrentDirectory() + "\" + WebFileName;
Console.WriteLine("DM Addin install path : {0}", DMAddinInstallPath);
Console.WriteLine("Visio Template : {0}", VisioTemplateName);
Console.WriteLine("Output : {0}", webFile);

//----------------------------------------------------
// Create the parameter object for the decision tree
// drawing and populate the required parameters
//----------------------------------------------------
ParameterDecisionTree parameter = new ParameterDecisionTree();
//Friendly name for the connection
parameter.ConnectionName = "AdventureWorksConnection";
//Name of the Analysis Server
parameter.DataSourceName = "localhost";
//Name of database
parameter.CatalogName = "AdventureWorks";
//Name of the mining model
parameter.ModelName = "Target Mail";
//Name of the decision tree predictable
parameter.TreeName = "Bike Buyer";
//Flag to hide the progress dialog
parameter.Silent = true;

//----------------------------------------------------
// Optional properties for the parameter object
//----------------------------------------------------
//Shade tree nodes using support
parameter.GradientType = GradientType.SupportGradient;
//Show support in the nodes
parameter.ShowSupport = false;
//Fill color for the nodes
parameter.FillColorArgb = System.Drawing.Color.Aqua.ToArgb();
//Fill pattern color for the nodes
parameter.PatternColorArgb = System.Drawing.Color.Azure.ToArgb();

//----------------------------------------------------
// Drawing helper object which performs the actual rendering
//----------------------------------------------------
DMDrawingHelper helper = new DMDrawingHelper(visioFile, false);
//Start the Visio application
helper.Start();

/*
Helper object allows access to Visio object model using the following methods:
helper.CreateNewDocument();
helper.CreateNewPage();
helper.ActiveDocument;
helper.ActivePage;
helper.Application;
*/

//Render the decision tree on the current active page
Console.WriteLine("Rendering decision tree using the visio engine...");
helper.DrawDecisionTree(helper.ActivePage, parameter);

//Convert all the pages of the drawing to HTML
Console.WriteLine("Converting to HTML using the visio engine...");
helper.SaveDocumentAsWebPage(helper.ActiveDocument,
-1,
-1,
webFile,
DMDrawingHelper.ShowNavigationBar | DMDrawingHelper.ShowPanAndZoom | DMDrawingHelper.ShowPropertiesWindow | DMDrawingHelper.ShowSearchTool);

//Close the Visio App
helper.Close();
Console.WriteLine("HTML File is generated at : {0}", webFile);

}
catch (Exception ex)
{
Console.WriteLine("DMDigramUsingViso Error : {0}", ex.Message);
}
}
}
}