简单的分页控件（原创）

前台有个容器用来存放创建的HtmlAnchor 

生成的样式：首页 上一页 12345 下一页 末页

   /// <summary>
/// 
/// </summary>
/// <param name="page">index first page is 0</param>
/// <returns></returns>

HtmlAnchor GetPageLink(int page)

{

HtmlAnchor a = new HtmlAnchor();
if (page < 0 || page > ItemCount / PageSize) return null;
//a.HRef = string.Format(Request.Path + (Request .QueryString .Count >0?string.Empty : "?")+"PageIndex={0}", page.ToString());

a.HRef =ToUriWithUserDomain(string.Format ("/HealthPostList/{0}.aspx",page.ToString ()));

a.InnerText = (page + 1).ToString();
return a;

}

void PageLinks()

{

Dictionary<int, int[]> pageIDs = new Dictionary<int, int[]>();
int pageCount = idList.Length / PageSize;
for (int i = 0, c = pageCount; i <= c; i++)

{

var item = idList.Skip(i * PageSize).Take(PageSize).ToArray ();
if (item.Length <= 0) continue;

pageIDs.Add(i,item);

}


idList = pageIDs[PageIndex];

//first page

HtmlAnchor firstPage =GetPageLink (0);

firstPage .InnerText ="首页";

PageLinkList .Controls .Add (firstPage);

HtmlAnchor prePage = GetPageLink((PageIndex - 1) < 0 ? 0 : (PageIndex - 1));

prePage.InnerText = "上一页";

PageLinkList.Controls.Add(prePage);

int range = 2;
int wholeRange = range * 2 + 1;
if (wholeRange > pageCount)

{

wholeRange = pageCount;

range = wholeRange / 2;

}

List<int> showPageIndex = new List<int>();

showPageIndex.Add(PageIndex);

while (showPageIndex.Count() < wholeRange)

{

showPageIndex.Add(showPageIndex.Max() + 1);

showPageIndex.Add(showPageIndex.Min() - 1);
if (PageIndex < range)

showPageIndex.Add(showPageIndex.Max() + 1);
if (PageIndex >= pageCount)

showPageIndex.Add(showPageIndex.Min() - 1);


showPageIndex = showPageIndex.OrderBy(item => item).ToList ();


showPageIndex = showPageIndex.Where(item => item >=0 && item < pageCount).ToList();


}

//showPageIndex.OrderBy(item => item);

foreach (int i in showPageIndex)

{
if(i==PageIndex )

{

HtmlGenericControl font = new HtmlGenericControl("font");

font.Attributes.Add("style", "font-size:24px");

font.Controls.Add(GetPageLink(PageIndex));

PageLinkList.Controls.Add(font);

}
else

PageLinkList.Controls.Add(GetPageLink(i));

}


HtmlAnchor nextPage = GetPageLink((PageIndex + 1) > (pageCount - 1) ? PageIndex : (PageIndex + 1));

nextPage.InnerText = "下一页";

PageLinkList.Controls.Add(nextPage);


HtmlAnchor endPage = GetPageLink((pageCount - 1)<0?0:(pageCount -1));

endPage.InnerText = "末页";

PageLinkList.Controls.Add(endPage);

}