public static class HtmlPager { public static MvcHtmlString MvcPager(this HtmlHelper html, string currentPageStr, int pageSize, int totalCount) { var queryString = html.ViewContext.HttpContext.Request.QueryString; int currentPage = 1; //当前页 var totalPages = Math.Max((totalCount + pageSize - 1) / pageSize, 1); //总页数 var dict = new System.Web.Routing.RouteValueDictionary(html.ViewContext.RouteData.Values); var output = new StringBuilder(); StringBuilder urlformat = new StringBuilder();//url地址 foreach (string item in dict.Keys) { urlformat.Append("/" + dict[item].ToString()); } urlformat.Append("?"); if (!string.IsNullOrEmpty(queryString[currentPageStr])) { //与相应的QueryString绑定 foreach (string key in queryString.Keys) if (queryString[key] != null && !string.IsNullOrEmpty(key)) dict[key] = queryString[key]; int.TryParse(queryString[currentPageStr], out currentPage); } else { //获取 ~/Page/{page number} 的页号参数 if (dict.ContainsKey(currentPageStr)) int.TryParse(dict[currentPageStr].ToString(), out currentPage); } foreach (string item in queryString.Keys) { if (item != currentPageStr) { urlformat.Append(item + "=" + queryString[item].ToString() + "&"); } } urlformat.Append(currentPageStr + "="); string strUrlformat = urlformat.ToString(); //保留查询字符到下一页 foreach (string key in queryString.Keys) dict[key] = queryString[key]; //如果有需要,保留表单值到下一页 (我暂时不需要, 所以注释掉) //var formValue = html.ViewContext.HttpContext.Request.Form; //foreach (string key in formValue.Keys) // if (formValue[key] != null && !string.IsNullOrEmpty(key)) // dict[key] = formValue[key]; if (currentPage <= 0) currentPage = 1; if (totalPages > 0) { output.AppendFormat("共{0}页 ", totalPages);//这个统计加不加都行 //if (currentPage != 1)//第一页时不显示 //{ //处理首页连接 永远显示 //dict[currentPageStr] = 1; //output.AppendFormat("{0} ", html.RouteLink("首页", dict)); output.Append("<a href=‘" + urlformat + "1‘>首页</a>"); //} if (currentPage > 1) { //处理上一页的连接 //dict[currentPageStr] = currentPage - 1; //output.Append(html.RouteLink("上一页", dict)); output.Append("<a href=‘" + strUrlformat + (currentPage - 1) + "‘>上一页</a>"); } else { output.Append("<a href=‘javascript:void(0);‘>上一页</a>"); //output.Append("上一页"); } output.Append(" "); int currint = 2; for (int i = 0; i <= 4; i++) { //一共最多显示5个页码,前面2个,后面2个 if ((currentPage + i - currint) >= 1 && (currentPage + i - currint) <= totalPages) if (currint == i) { //当前页处理 output.Append(string.Format("<a class=‘Cur01‘ href=‘javascript:void(0);‘>{0}</a>", currentPage)); //output.Append(string.Format("[{0}]", currentPage)); } else { //一般页处理 //dict[currentPageStr] = currentPage + i - currint; //output.Append(html.RouteLink((currentPage + i - currint).ToString(), dict)); output.Append("<a href=‘" + strUrlformat + (currentPage + i - currint) + "‘>" + (currentPage + i - currint) + "</a>"); } output.Append(" "); } if (currentPage < totalPages) { //处理下一页的链接 //dict[currentPageStr] = currentPage + 1; //output.Append(html.RouteLink("下一页", dict)); output.Append("<a href=‘" + strUrlformat + (currentPage + 1) + "‘>下一页</a>"); } else { output.Append("<a href=‘javascript:void(0);‘>下一页</a>"); //output.Append("下一页"); } output.Append(" "); //if (currentPage != totalPages)//最后一页时不显示 //{ //dict[currentPageStr] = totalPages; //output.Append(html.RouteLink("尾页", dict)); output.Append("<a href=‘" + strUrlformat + (totalPages) + "‘>尾页</a>"); //} output.Append(" "); //output.AppendFormat("{0} / {1}", currentPage, totalPages);//这个统计加不加都行 output.Append(html.TextBox("JumpPage", null, new { Class = "TJump", onkeydown = "return EnterPress(event)" })); output.Append(" "); output.Append("<input type=‘button‘ value=‘Go‘ id=‘btnJump‘ data-maxpages=‘" + totalPages + "‘ data-urlformat=‘" + HttpContext.Current.Server.HtmlEncode(strUrlformat) + "‘ onclick=‘return gotopage()‘ />"); } string rtnStr = output.ToString(); string flagStr = @"[\?&]page=1(?!\d)";//?!负声明,涵义:括号中的模式必须不出现在声明右侧 rtnStr = Regex.Replace(rtnStr, flagStr, ""); return new MvcHtmlString(rtnStr); } }
function gotopage() { var pagetarget = $("#JumpPage").val(); var r = new RegExp("^\\s*(\\d+)\\s*$"); if (!r.test(pagetarget)) { alert("请输入有效数字!"); return; } else if (RegExp.$1 < 1 || RegExp.$1 > parseInt($("#btnJump").attr("data-maxpages"))) { alert("超出范围!"); return; } else { location.href = decodeURI($("#btnJump").attr("data-urlformat") + pagetarget) } }
@Html.MvcPager("page", pageSize, count)
时间: 2024-11-05 21:43:09