Error executing template "Designs/Swift/Swift_Email/Paragraph/Swift_EmailProductCatalog.cshtml"
System.NullReferenceException: Object reference not set to an instance of an object.
   at CompiledRazorTemplates.Dynamic.RazorEngine_040459fdc6234ed19a749110a77a809d.<>c__DisplayClass4_0.<RenderProduct>b__0(TextWriter __razor_helper_writer) in D:\dynamicweb.net\Solutions\Setoff\watercryst.dw9.dynamicweb-cms.com\files\Templates\Designs\Swift\Swift_Email\Paragraph\Swift_EmailProductCatalog.cshtml:line 201
   at CompiledRazorTemplates.Dynamic.RazorEngine_040459fdc6234ed19a749110a77a809d.Execute() in D:\dynamicweb.net\Solutions\Setoff\watercryst.dw9.dynamicweb-cms.com\files\Templates\Designs\Swift\Swift_Email\Paragraph\Swift_EmailProductCatalog.cshtml:line 96
   at RazorEngine.Templating.TemplateBase.RazorEngine.Templating.ITemplate.Run(ExecuteContext context, TextWriter reader)
   at RazorEngine.Templating.RazorEngineService.RunCompile(ITemplateKey key, TextWriter writer, Type modelType, Object model, DynamicViewBag viewBag)
   at RazorEngine.Templating.RazorEngineServiceExtensions.<>c__DisplayClass16_0.<RunCompile>b__0(TextWriter writer)
   at RazorEngine.Templating.RazorEngineServiceExtensions.WithWriter(Action`1 withWriter)
   at Dynamicweb.Rendering.RazorTemplateRenderingProvider.Render(Template template)
   at Dynamicweb.Rendering.TemplateRenderingService.Render(Template template)
   at Dynamicweb.Rendering.Template.RenderRazorTemplate()


  1     @inherits Dynamicweb.Rendering.ViewModelTemplate<Dynamicweb.Frontend.ParagraphViewModel>
@using Dynamicweb.Ecommerce.ProductCatalog
@functions {
	private string GetFontStack()
	{
		return "font-family:initial,Arial,Helvetica Neue,Helvetica,sans-serif;";
	}
	private string GetTableReset()
	{
		return "border:0;margin:0;outline:0;padding:0;";
	}
	public Dynamicweb.Frontend.ColorViewModel GetMutedColor(string hex, int percent, double threshold = 0.5)
	{
		/// <summary>
		/// Return a color in either lighter or darker contrast based on the original color luminance.
		/// </summary>
		/// <param name="percent">The percent (1-100) to darken or light the color with - higher percentage will give higher contrast</param>
		/// <param name="threshold">The luminance threshold (0-1). Default is 0.5. 0 is black, 1 is white. Luminance threshold is used to decide wether the returned contrast color should be darker or lighter than the base color</param>
		/// <returns>A new color viewmodel with the contrasted color in either darker or lighter luminance compared to base color</returns>
		/// 
		if (threshold > 1)
			threshold = 1;
		if (threshold < 0)
			threshold = 0;
		var color = Dynamicweb.Imaging.Colors.Color.FromHex(hex);
		var luminance = (0.2126 * color.BaseColor.R) + (0.7152 * color.BaseColor.G) + (0.0722 * color.BaseColor.B);
		/// == luminance = 0 is black, luminance = 1 is white == //
		luminance = color.Brightness / 255;
		if (luminance < threshold)
		{
			return new Dynamicweb.Frontend.ColorViewModel() { Hex = color.Lighten(percent).ToHex() };
		}
		else
		{
			return new Dynamicweb.Frontend.ColorViewModel() { Hex = color.Darken(percent).ToHex() };
		}
	}
}
@{
	string blockType = "productcatalog_block";
	var page = Dynamicweb.Services.Pages.GetPage(Pageview.ID);
	var settings = Dynamicweb.Frontend.ContentViewModelFactory.CreatePageInfoViewModel(page?.Parent).Item;
	var blockId = Model.ID;
	var block = Model.Item;
	var emailContentThemeId = settings.GetRawValueString("EmailContentTheme");
	var emailContentThemeParagraph = emailContentThemeId != null && emailContentThemeId != string.Empty ? Dynamicweb.Services.Paragraphs.GetParagraph(Dynamicweb.Core.Converter.ToInt32(emailContentThemeId)) : null;
	var emailContentTheme = emailContentThemeParagraph != null && Dynamicweb.Frontend.ContentViewModelFactory.CreateParagraphInfoViewModel(emailContentThemeParagraph).Item.GetString("CssClassName") != string.Empty ? Dynamicweb.Frontend.ContentViewModelFactory.CreateParagraphInfoViewModel(emailContentThemeParagraph)?.Item : null;
	var rowId = Pageview.CurrentParagraph.GridRowId;
	var row = Dynamicweb.Services.Grids.GetGridRowById(rowId);
	var rowItem = Dynamicweb.Services.Items.GetItem(row.ItemType, row.ItemId);
	var rowThemeId = Dynamicweb.Core.Converter.ToString(rowItem["ColumnBackground"]);
	var rowThemeParagraph = rowThemeId != null && rowThemeId != string.Empty ? Dynamicweb.Services.Paragraphs.GetParagraph(Dynamicweb.Core.Converter.ToInt32(rowThemeId)) : null;
	var rowTheme = rowThemeParagraph != null && Dynamicweb.Frontend.ContentViewModelFactory.CreateParagraphInfoViewModel(rowThemeParagraph).Item.GetString("CssClassName") != string.Empty ? Dynamicweb.Frontend.ContentViewModelFactory.CreateParagraphInfoViewModel(rowThemeParagraph)?.Item : null;
	var blockThemeId = block.GetRawValueString("Theme");
	var blockThemeParagraph = blockThemeId != null && blockThemeId != string.Empty ? Dynamicweb.Services.Paragraphs.GetParagraph(Dynamicweb.Core.Converter.ToInt32(blockThemeId)) : null;
	var blockTheme = blockThemeParagraph != null && Dynamicweb.Frontend.ContentViewModelFactory.CreateParagraphInfoViewModel(blockThemeParagraph).Item.GetString("CssClassName") != string.Empty ? Dynamicweb.Frontend.ContentViewModelFactory.CreateParagraphInfoViewModel(blockThemeParagraph)?.Item : rowTheme is object ? rowTheme : emailContentTheme;
	string backgroundColor = blockTheme != null ? "background-color: " + blockTheme.GetString("BackgroundColor") + ";" : string.Empty;
	string foregroundColor = blockTheme != null ? "color:" + blockTheme.GetString("ForegroundColor", "inherit") + ";" : string.Empty;
	string title = block.GetString("Title", string.Empty);
	int padding = Dynamicweb.Core.Converter.ToInt32(block.GetRawValueString("Padding", "0"));
	int cellSpacing = 8;
	string align = block.GetRawValueString("Align", "left");
	string text = block.GetString("Text", string.Empty);
	var layoutColumns = Dynamicweb.Core.Converter.ToInt32(block.GetRawValueString("Layout", "2"));
	ProductListViewModel selectedProducts = block?.GetValue("Products") as ProductListViewModel;
	IList<ProductViewModel> products = selectedProducts?.Products;
}
<table id="@blockId" class="@blockType" align="center" border="0" cellpadding="0" cellspacing="0" role="presentation" style="mso-table-lspace:0pt;mso-table-rspace:0pt;@GetTableReset()color:inherit;width:100%;@(backgroundColor)">
	<tbody>
		<tr style="@GetTableReset()">
			<td style="@GetTableReset()padding:@(padding)px">
				<table align="center" border="0" cellpadding="0" cellspacing="0" role="presentation" style="mso-table-lspace:0pt;mso-table-rspace:0pt;@GetTableReset()color:inherit;width:100%;">
					<tbody>
						@if (products is object && products.Any())
						{
							@:<tr style="@GetTableReset()">
							int index = 1;
							int totalProducts = products.Count();
							foreach (var product in products)
							{
								<td valign="top" style="@GetTableReset()">
									@RenderProduct(product, blockTheme, align)
								</td>
								if (index % layoutColumns == 0 && !(index == totalProducts))
								{
								@:</tr>
								@:<tr style="@GetTableReset()">
									@:<td style="@GetTableReset()" colspan="100%" height="@(cellSpacing * 4)">&nbsp;</td>
								@:</tr>
								@:<tr style="@GetTableReset()">
								}
								else
								{
									if(!(index == totalProducts))
									{ 
										@:<td width="@(cellSpacing)" style="@GetTableReset()">&nbsp;</td>
									}
								}
								index++;
							}
							@:</tr>
						}
						else
						{
							if (Pageview.IsVisualEditorMode)
							{
								<tr style="@GetTableReset()">
									<td style="@(foregroundColor)">@Translate("No products selected")</td>
								</tr>
							}
						}
					</tbody>
				</table>
				<!--[if mso]><br/><![endif]-->
			</td>
		</tr>
	</tbody>
</table>
@helper RenderImage(ProductViewModel product, Dynamicweb.Frontend.ItemViewModel theme)
{
	int layout = Dynamicweb.Core.Converter.ToInt32(Model.Item.GetRawValueString("Layout", "2"));
	int padding = Convert.ToInt32(Model.Item.GetRawValueString("Padding", "0"));
	var imageRatio = Model.Item.GetRawValueString("ImageAspectRatio", "4-3").ToLower();
	var parms = new Dictionary<string, object>();
	parms.Add("alt", product.Name);
	parms.Add("columns", layout);
	parms.Add("gridColumns", Model.GridRowColumnCount);
	parms.Add("nested", Model.GridRowColumnCount > 1);
	parms.Add("padding", (padding * 2) + (8 * (layout - 1)));
	parms.Add("imageRatio", imageRatio);
	if(product.DefaultImage is object)
    {
		@RenderPartial("Swift_Email/Components/Image.cshtml", new Dynamicweb.Frontend.FileViewModel() {Name = product.Name, Path = product.DefaultImage.Value }, parms);
    }
}
@helper RenderProduct(ProductViewModel product, Dynamicweb.Frontend.ItemViewModel theme, string align)
{
	var backgroundColor = theme?.GetColor("BackgroundColor");
	var foregroundColor = theme?.GetColor("ForegroundColor");
	var borderColor = theme?.GetColor("BorderColor");
	string variantIdForLink = !string.IsNullOrEmpty(product.VariantId) ? $"&VariantID={product.VariantId}" : "";
	variantIdForLink = string.IsNullOrEmpty(variantIdForLink) && !string.IsNullOrEmpty(product.DefaultVariantId) ? $"&VariantID={product.DefaultVariantId}" : variantIdForLink;
	string link = "Default.aspx?ID=" + GetPageIdByNavigationTag("Shop");
	link += $"&GroupID={product.PrimaryOrDefaultGroup.Id}";
	link += $"&ProductID={product.Id}";
	link += variantIdForLink;
	link = Dynamicweb.Frontend.SearchEngineFriendlyURLs.GetFriendlyUrl(link);
	var uri = Dynamicweb.Context.Current.Request.Url;
	var hostname = uri.Scheme + Uri.SchemeDelimiter + uri.Host;
	bool hideProductPrice = Model.Item?.GetBoolean("HideProductPrice") ?? false;
	bool hideProductNumber = Model.Item?.GetBoolean("HideProductNumber") ?? false;
	<table style="border-collapse:collapse;table-layout:fixed;@GetTableReset()" cellpadding="0" cellspacing="0" width="100%" role="presentation">
		<tbody>
			<tr style="@GetTableReset()">
				<td style="@GetTableReset()">
					<div align="center" style="font-size:2px;">
						<a style="text-decoration:none;@GetTableReset()" href="@link" target="_blank">
							@RenderImage(product, theme)
						</a>
					</div>
					<table style="border-collapse:collapse;table-layout:fixed;@GetTableReset()" cellpadding="0" cellspacing="0" width="100%" role="presentation">
						<tbody>
							<tr style="@GetTableReset()">
								<td style="@GetTableReset()padding-top:8px;text-align:@align;line-height:18px;font-size:13px;text-decoration:none;color:@foregroundColor;">
									<a style="text-decoration:none;color:@foregroundColor;@GetTableReset()" href="@link" target="_blank">
										@product.Name
									</a>
								</td>
							</tr>
							@if (!hideProductNumber)
							{
								<tr>
									<td style="@GetTableReset()padding-top:8px;line-height:18px;font-size:11px;color:@(GetMutedColor(foregroundColor.Hex, 20));">
										@product.Number
									</td>
								</tr>
							}
							@if (!hideProductPrice)
							{
								<tr>
									<td style="@GetTableReset()padding-top:8px;line-height:13px;font-size:13px;break-inside:avoid;word-break:keep-all;white-space:nowrap;color:@(foregroundColor);">
										@product.Price.PriceFormatted
										@if (product.Discount.Price > 0)
										{
											<span style="line-height:13px;font-size:13px;text-decoration:line-through;break-inside:avoid;word-break:keep-all;white-space:nowrap;color:@(GetMutedColor(foregroundColor.Hex, 20));">@product.PriceBeforeDiscount.PriceFormatted</span>
										}
									</td>
								</tr>
							}
							<tr><td height="24" style="padding-top:24px;"></td></tr>
						</tbody>
					</table>
				</td>
			</tr>
		</tbody>
	</table>
}