public static MvcHtmlString PageLinks(this HtmlHelper html, vmPagingInfo pagingInfo, Func <int, string> pageUrl)
{
StringBuilder result = new StringBuilder();
for (int i = 1; i <= pagingInfo.TotalPages; i++)
{
TagBuilder tag = new TagBuilder("a");
tag.MergeAttribute("href", pageUrl(i));
tag.InnerHtml = i.ToString();
if (i == pagingInfo.CurrentPage)
{
tag.AddCssClass("selected");
tag.AddCssClass("btn-primary");
}
tag.AddCssClass("btn btn-default");
result.Append(tag.ToString());
}
return(MvcHtmlString.Create(result.ToString()));
}
public void Can_Send_Pagination_View_Model()
{
// Arrange
Mock <IProductsRepository> mock = new Mock <IProductsRepository>();
mock.Setup(m => m.Products).Returns(new Product[]
{
new Product {
ProductID = 1, Name = "P1"
},
new Product {
ProductID = 2, Name = "P2"
},
new Product {
ProductID = 3, Name = "P3"
},
new Product {
ProductID = 4, Name = "P4"
},
new Product {
ProductID = 5, Name = "P5"
}
});
// Arrange
ProductController controller = new ProductController(mock.Object);
controller.PageSize = 3;
// Act
vmProductsList result = (vmProductsList)controller.List(null, 2).Model;
// Assert
vmPagingInfo pageInfo = result.PagingInfo;
Assert.AreEqual(pageInfo.CurrentPage, 2);
Assert.AreEqual(pageInfo.ItemsPerPage, 3);
Assert.AreEqual(pageInfo.TotalItems, 5);
Assert.AreEqual(pageInfo.TotalPages, 2);
}
public void Can_Generate_Page_Links()
{
// Arrange-defin an HTML helper - we need to do this
// in order to apply the extension method
HtmlHelper myHelper = null;
// Arrange - create PagingInfo data
vmPagingInfo pagingInfo = new vmPagingInfo
{
CurrentPage = 2,
TotalItems = 28,
ItemsPerPage = 10
};
//Arrange - set up the delegate using a lambda expression
Func <int, string> pageUrlDelegate = i => "Page" + i;
//Act
MvcHtmlString result = myHelper.PageLinks(pagingInfo, pageUrlDelegate);
//Assert
Assert.AreEqual(@"<a class=""btn btn-default"" href=""Page1"">1</a><a class=""btn btn-default btn-primary selected"" href=""Page2"">2</a><a class=""btn btn-default"" href=""Page3"">3</a>", result.ToString());
}
