New Post: FeaturesDialog does not work

project.MinimalCustomDrawing = true;

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Xml.Linq;
using System.Xml.XPath;

using WixSharp;
using WixSharp.CommonTasks;
using WixSharp.Forms;
using WixSharp.UI.Forms;


// https://wixsharp.codeplex.com/releases/view/624868
// https://wixsharp.codeplex.com/SourceControl/latest#readme.txt

namespace MsiAppFormTest
{
  public partial class Form1 : Form
  {
    public Form1()
    {
      InitializeComponent();
    }

    private void btDeploy_Click(object sender, EventArgs e)
    {
      Compiler.WixLocation = @"some_location2\_msi\WixSharp.1.0.40.0\Wix_bin\bin\";

      var general = new Feature("General files", true, false);
      var modules = new Feature("Modules files", true, true);
      var modulett0 = new Feature("t0Module", true, true);
      var modulet1 = new Feature("t1Module", true, true);
      var modulet2 = new Feature("t2Module", true, true);
      var modulet2 = new Feature("t3Module", true, true);
      var modulet4 = new Feature("t4Module", true, true);
      var modulet5 = new Feature("t5Module", false, true);
      var modulet6 = new Feature("t6Module", false, true);
      var modulet7 = new Feature("t7odule", false, true);

      modules.Add(modulet0);
      modules.Add(modulet1);
      modules.Add(modulet2);
      modules.Add(modulet3);
      modules.Add(modulet4);
      modules.Add(modulet5);
      modules.Add(modulet6);
      modules.Add(modulet7);

      general.Add(modules);

      ManagedProject project = new ManagedProject("agent",
                        new Property("RURL", @"https://url.com") { IsDeferred = true },

                        new Dir(@"%ProgramFiles%\agent",
                          new File(modulet0, @"some_location\t0.dll"),
                          new File(modulet1, @"some_location\t1.dll"),
                          new File(modulet2, @"some_location\t2.dll"),
                          new File(modulet3, @"some_location\t3.dll"),
                          new File(modulet4, @"some_location\t4.dll"),
                          #region MySql
                          new File(modulet5, @"some_location\t51.dll"),
                          new File(modulet5g, @"some_location\t52.dll"),
                          #endregion
                          #region oracle
                          new File(modulet6, @"some_location\t6.dll"),
                          new Dir(modulet6, @"OraClient.x64",
                            new File(modulet6, @"some_location\OraClient.x64\oci.dll"),
                            new File(modulet6, @"some_location\OraClient.x64\ociw32.dll"),
                            new File(modulet6, @"some_location\OraClient.x64\orannzsbb10.dll"),
                            new File(modulet6, @"some_location\OraClient.x64\oraocci10.dll"),
                            new File(modulet6, @"some_location\OraClient.x64\oraociei10.dll")),
                          new Dir(modulet6, @"OraClient.x86",
                            new File(modulet6, @"some_location\OraClient.x86\oci.dll"),
                            new File(modulet6, @"some_location\OraClient.x86\ociw32.dll"),
                            new File(modulet6, @"some_location\OraClient.x86\orannzsbb10.dll"),
                            new File(modulet6, @"some_location\OraClient.x86\oraocci10.dll"),
                            new File(modulet6, @"some_location\OraClient.x86\oraociei10.dll")),
                          #endregion
                          #region ftp
                          new File(modulet7, @"some_location\t7.dll"),
                          new File(modulet7, @"some_location\t71.dll"),
                          new File(modulet7, @"some_location\t72.dll"),
                          #endregion

                          new Dir(general, @"x64", new File(@"some_location\x64\SQLite.Interop.dll")),
                          new Dir(general, @"x86", new File(@"some_location\x86\SQLite.Interop.dll")),

                          new File(general, @"some_location\a0.db"),
                          new File(general, @"some_location\a1.pos"),
                          new File(general, @"some_location\a2.json"),
                          new File(general, @"some_location\agent.config"),

                          new File(general, @"some_location\System.Data.SQLite.dll"),
                          new File(general, @"some_location\a5.dll"),
                          new File(general, @"some_location\agent.exe"),

                          new File(general, @"some_location\u0.config"),
                          new File(general, @"some_location\u1.exe"))
                        );

      project.DefaultFeature = general;
      project.DefaultFeature.Children.Add(modulet0);
      project.DefaultFeature.Children.Add(modulet1);
      project.DefaultFeature.Children.Add(modulet2);
      project.DefaultFeature.Children.Add(modulet3);
      project.DefaultFeature.Children.Add(modulet4);
      project.DefaultFeature.Children.Add(modulet5);
      project.DefaultFeature.Children.Add(modulet6);
      project.DefaultFeature.Children.Add(modulet7);

      //if( Environment.GetEnvironmentVariable("buid_as_64") != null ) project.Platform = Platform.x64; // работает НЕвсегда....
      if( IntPtr.Size == 8 ) project.Platform = Platform.x64;

      project.GUID = new Guid("0c47a0be-437d-4ab6-883a-f0ecc38ddbff");
      project.PreserveTempFiles = true;
      //project.MinimalCustomDrawing = true; // <-------------------------- fix the problem

      project.ManagedUI = new ManagedUI();
      project.ManagedUI.InstallDialogs.Add<WelcomeDialog>()
                                      .Add<LicenceDialog>()
                                      .Add<InstallDirDialog>()
                                      .Add<FeaturesDialog>()
                                      .Add<CustFormSrvAdr>()
                                      .Add<ProgressDialog>()
                                      .Add<ExitDialog>();

      project.ManagedUI.ModifyDialogs.Add<FeaturesDialog>()
                                     .Add<ProgressDialog>()
                                     .Add<ExitDialog>();

      project.AfterInstall += Project_AfterInstall;
      Compiler.BuildMsi(project);

      MessageBox.Show("Completed successfully!", "Status");
      Close();
    }

    private static void Project_AfterInstall(SetupEventArgs e)
    {
      if( e.IsInstalling ) {
        string strSrvUrl = e.Session.Property("URL");
        string configFile = System.IO.Path.Combine(e.InstallDir, "Agent.config");

        UpdateAsXml(configFile, strSrvUrl);
      }
      else if( e.IsUninstalling ) {
        try {
          System.IO.Directory.Delete(e.InstallDir, true);
        }
        catch { /*log error if required*/ }
      }
    }

    static public void UpdateAsXml(string configFile, string strSrvUrl)
    {
      var xDoc = XDocument.Load(configFile);
      xDoc.XPathSelectElement("//configuration/appSettings/add[@key='bla-bla']").Attribute("value").Value = strSrvUrl;
      xDoc.Save(configFile);
    }
  }
}