c# - 使用 tagbuilder 构建多个无序列表

Question

我正在尝试unordered lists使用标签生成器构建两个。

  public static MvcHtmlString GenerateMultipleUL<T>(this HtmlHelper html, IGridable<T> model)
        where T : class
            { 
            int itemsCount = model.RowModels.Count();
            TagBuilder ulTag = new TagBuilder("ul");                 
            foreach(var indexedItem in model.RowModels.Select((p, i)=> new {item = p, Index = i}))
                {
                    if (itemsCount / 2 == indexedItem.Index)
                    {  //create a new Un ordered List
ulTag = new TagBuilder("ul"); // This resets the old values with new ones but i want to close the old UL and create a new one.
                    }
                    TagBuilder liTag = new TagBuilder("li");
                        ..........
                    ulTag.InnerHtml += liTag;
                 }
            return new MvcHtmlString(ulTag.ToString());
            }

Answer 1

如果我理解您的问题，您应该使用单独StringBuilder的来保存生成的 HTML 以供输出。这将为您提供一个地方来存储您的第一个 UL 的结果，然后再继续生成第二个。

StringBuilder output = new StringBuilder();
TagBuilder ulTag = new TagBuilder("ul");
foreach (var item in model)
{
    if (testCondition(item))
    {
        output.Append(ulTag.ToString());
        ulTag = new TagBuilder("ul");
    }
    ...
}
output.Append(ulTag.ToString();
return output.ToString();