Sample code for WPF Project Wizard Dialog, tried styling it like a native looking dialog but that didnt really pan out

OpenCLProjectWizardWPF.cs

using System;
using System.Collections.Generic;
using Microsoft.VisualStudio.TemplateWizard;
//using System.Windows.Forms;
using EnvDTE;
using Microsoft.VisualStudio.PlatformUI;
using System.Windows.Controls;
using System.Windows.Media;
using Microsoft.VisualStudio.Shell;

using RootTemplatePlaceholder;

using Microsoft.VisualStudio.Settings;
using Microsoft.VisualStudio.Shell.Settings;
using System.Windows;

namespace RootTemplatePlaceholder
{
    class OpenCLProjectWizard : IWizard
    {
        //private UserInputForm inputForm;
        private string customMessage;
        
        public void BeforeOpeningFile(ProjectItem projectItem)
        {
        }

        public void ProjectFinishedGenerating(Project project)
        {

        }

        public void ProjectItemFinishedGenerating(ProjectItem projectItem)
        {

        }

        public void RunFinished()
        {
        }

        public void RunStarted(object automationObject, Dictionary<string, string> replacementsDictionary, WizardRunKind runKind, object[] customParams)
        {
                        
            try
            {

                TestWizardForm testDialog = new TestWizardForm(customMessage);
                testDialog.ShowDialog();
                

                customMessage = testDialog.CustomMessage;

                replacementsDictionary.Add("$custommessage$",
                    customMessage);
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.ToString());
            }
        }

        public bool ShouldAddProjectItem(string filePath)
        {
            return true;
        }
    }
}


public partial class TestWizardForm : DialogWindow
{
    private static string customMessage;
    readonly UserControl1 testUserControl;

    public string CustomMessage {
        get { return customMessage; }
        set { customMessage = value; }
    }

    private static SolidColorBrush ToBrush(ThemeResourceKey key)
    {
        var color = VSColorTheme.GetThemedColor(key);
        return new SolidColorBrush(Color.FromArgb(color.A, color.R, color.G, color.B));
    }

    internal TestWizardForm(string customMessage)
    {
        
        this.IsCloseButtonEnabled = true;
        
        testUserControl = new UserControl1();
        testUserControl.customMsgTxt.Text = customMessage;

        this.Width = testUserControl.Width;
        this.Height = testUserControl.Height;

        this.Content = testUserControl.Content;
        testUserControl.submitButton.Click += SubmitMessage;

        this.Background = ToBrush(EnvironmentColors.EnvironmentBackgroundColorKey);
        
    }

    
    private void SubmitMessage(object sender,EventArgs e)
    {
        customMessage = testUserControl.customMsgTxt.Text;
        this.Close();
    }
}

UserControl1.xaml

<UserControl
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
             xmlns:local="clr-namespace:RootTemplatePlaceholder"
             xmlns:vsfx="clr-namespace:Microsoft.VisualStudio.Shell;assembly=Microsoft.VisualStudio.Shell.15.0"
             xmlns:vsui="clr-namespace:Microsoft.VisualStudio.PlatformUI;assembly=Microsoft.VisualStudio.Shell.15.0"
             
             xmlns:shellControls="clr-namespace:Microsoft.VisualStudio.PlatformUI.Shell.Controls;assembly=Microsoft.VisualStudio.Shell.ViewManager"
             xmlns:Default="clr-namespace:RootTemplatePlaceholder" x:Class="RootTemplatePlaceholder.UserControl1"
             mc:Ignorable="d" 
             Height="190" Width="532">

    <Grid>
        <Grid.Resources>
            <ResourceDictionary>
                <Style TargetType="{x:Type Button}" BasedOn="{StaticResource {x:Static vsfx:VsResourceKeys.ThemedDialogButtonStyleKey}}"/>
                <Style TargetType="{x:Type Label}" BasedOn="{StaticResource {x:Static vsfx:VsResourceKeys.ThemedDialogLabelStyleKey}}"/>
                <Style TargetType="{x:Type TextBox}" BasedOn="{StaticResource {x:Static vsfx:VsResourceKeys.TextBoxStyleKey}}"/>
            </ResourceDictionary>

        </Grid.Resources>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="18*"/>
            <ColumnDefinition Width="17*"/>
        </Grid.ColumnDefinitions>
        <Grid.RowDefinitions>
            <RowDefinition Height="90"/>
            <RowDefinition Height="70"/>
        </Grid.RowDefinitions>

        <StackPanel Margin="12" Grid.Row="0" Grid.ColumnSpan="2">
            <Label  x:Name="tbDescription"  HorizontalAlignment="Left" Content="Enter value for $custommessage$ parameter" Padding="0,0,0,0" Margin="7,0,0,0"/>
            <TextBox x:Name="customMsgTxt"   HorizontalAlignment="Left" Height="23" TextWrapping="Wrap" Margin="7,0,0,0" Width="380"/>
        </StackPanel>
        <StackPanel Orientation="Horizontal"  HorizontalAlignment="Right" Grid.Row="1" Margin="0,12,12,12" Grid.Column="1">
            <Button x:Name="submitButton"  Content="Set CustomMessage"  Width="Auto" Height="23" Padding="6,2,6,2"/>
        </StackPanel>
    </Grid>
</UserControl>

UserControl1.xaml.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
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 Microsoft.VisualStudio.Shell;

namespace RootTemplatePlaceholder
{

    public partial class UserControl1 : UserControl
    {
        public UserControl1()
        {
            InitializeComponent();
            //submitButton.SetResourceReference(Button.StyleProperty, VsResourceKeys.ThemedDialogButtonStyleKey);
            //customMsgTxt.SetResourceReference(TextBox.StyleProperty, VsResourceKeys.TextBoxStyleKey);
            //tbDescription.SetResourceReference(Label.StyleProperty, VsResourceKeys.LabelEnvironmentBoldStyleKey);
        }

       
    }
}