public static MvcHtmlString PageLinks(this HtmlHelper html,
PagingInfo paginInfo,
Func<int, string> pageUrl)
{
StringBuilder res = new StringBuilder();
for (int i = 1; i <= paginInfo.TotalPages; i++)
{
TagBuilder tag = new TagBuilder("a"); //<a></a>
tag.MergeAttribute("href", pageUrl(i));
tag.InnerHtml = i.ToString();
if (paginInfo.CurrentPage == i)
tag.AddCssClass("selected");
res.Append(tag.ToString());
}
return MvcHtmlString.Create(res.ToString());
}
public void CanGeneratePageLinks()
{
//arrange: define an HTML helper -> apply extension method
HtmlHelper myHelper = null;
PagingInfo pagingInfo = new PagingInfo
{
CurrentPage = 2,
TotalItems = 28,
ItemsPerPage = 10
};
Func<int, string> urlMaker = i => string.Format("Page{0}", i);
//act
MvcHtmlString res = myHelper.PageLinks(pagingInfo, urlMaker);
//assert
Assert.AreEqual(res.ToString(), @"<a href=""Page1"">1</a>" +
@"<a class=""selected"" href=""Page2"">2</a>" +
@"<a href=""Page3"">3</a>");
}
