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);
}
版本二
public partial class List : BaiChang .HeaBlog .Framework .HttpHandler .UserPage
{
private int PageIndex = 0;
private int PageSize = 2;
private int ItemCount =10;
private int[] idList;
Dictionary<int, int[]> pageIDs = new Dictionary<int, int[]>();
protected void Page_Load(object sender, EventArgs e)
{
idList = EA.Posts.GetAllPostIDByUserID(base.BlogUser.UserID).Reverse().ToArray();
ItemCount = idList.Length;
PageIndex = -1;
if (!IsPostBack)
{
if (Request.QueryString["PageIndex"] != null
&&
int.TryParse(Request.QueryString["PageIndex"].ToString (), out PageIndex)) { }
if (PageIndex < 0)
PageIndex = 0;
PageLinks();
}
Array.ForEach<int>(pageIDs[PageIndex],
it =>
{
System.Web.UI.Control c = Utils.LoadShowHealBlogControl(it);
Content.Controls.Add(c);
});
}
void PageLinks()
{
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, true);
firstPage.InnerText = "首页";
PageLinkList.Controls.Add(firstPage);
HtmlAnchor prePage = GetPageLink((PageIndex - 1) < 0 ? 0 : (PageIndex - 1), true);
if (prePage != null)
{
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();
}
foreach (int i in showPageIndex)
{
if (i == PageIndex)
{
HtmlGenericControl font = new HtmlGenericControl("font");
font.Attributes.Add("style", "font-size:24px");
System.Web.UI.Control c = GetPageLink(PageIndex, true);
if (c != null)
font.Controls.Add(c);
PageLinkList.Controls.Add(font);
}
else
{
System.Web.UI.Control c = GetPageLink(i, true);
if (c != null)
PageLinkList.Controls.Add(c);
}
}
HtmlAnchor nextPage = GetPageLink((PageIndex + 1) > (pageCount - 1) ? PageIndex : (PageIndex + 1), false);
nextPage.InnerText = "下一页";
PageLinkList.Controls.Add(nextPage);
HtmlAnchor endPage = GetPageLink((pageCount - 1) < 0 ? 0 : (pageCount - 1), false);
endPage.InnerText = "末页";
PageLinkList.Controls.Add(endPage);
TextBox tb = new TextBox();
tb.ID = "txtPageIndex";
tb.MaxLength = 3;
PageLinkList.Controls.Add(tb);
Button btn = new Button();
btn.ID = "btnTo";
btn.Text = "GO";
btn.Click += new EventHandler(btn_Click);
PageLinkList.Controls.Add(btn);
}
HtmlAnchor GetPageLink(int page, bool isCheckIgnore)
{
HtmlAnchor a = new HtmlAnchor();
if (isCheckIgnore &&( page < 0 || page > ItemCount / PageSize)) return null;
a.HRef = string.Format("{0}{1}/HealBlog/List/?PageIndex={2}", Utils.WebRoot, BlogUserDomain.Domain, page);
//a.HRef = string.Format(Request.Path + (Request .QueryString .Count >0?string.Empty: "?")+"PageIndex={0}", page.ToString());
a.InnerText = (page + 1).ToString();
return a;
}
void btn_Click(object sender, EventArgs e)
{
TextBox tb = (TextBox)Page.FindControl("btnTo");
if (tb != null)
{
int.TryParse(tb.Text, out PageIndex);
}
//在这里写跳转
}
}
作者：KKcat
