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cs-Panination
| ylbtech-Unitity: cs-Panination |
Pager.cs
IPagingOption.cs IPagedList.cs
PagingOption.cs PagedList.cs
PagingExtensions.cs
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1.B.1,Pager.cs
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using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Web;using System.Web.Mvc;using System.Web.Mvc.Ajax;using System.Web.Routing;using Healthcare.Framework.Web.URL;namespace Healthcare.Framework.Web.Mvc.Pagination{ public class Pager { private ViewContext viewContext; private int currentPage; private int pageCount; private RouteValueDictionary pageLinkValueDictionary; private readonly int pageSize; private readonly int totalItemCount; private readonly RouteValueDictionary linkWithoutPageValuesDictionary; private readonly AjaxOptions ajaxOptions; private readonly string sortBy; private readonly bool? sortDescending; public Pager(ViewContext viewContext, int pageSize, int currentPage, int totalItemCount, RouteValueDictionary valuesDictionary, AjaxOptions ajaxOptions) { this.viewContext = viewContext; this.pageSize = pageSize; this.currentPage = currentPage; this.totalItemCount = totalItemCount; this.linkWithoutPageValuesDictionary = valuesDictionary; this.ajaxOptions = ajaxOptions; this.ensureCollectionPageLinkValue(); } public Pager(ViewContext viewContext, int pageSize, int currentPage, int totalItemCount, string sortBy, bool? sortDescending, RouteValueDictionary valuesDictionary, AjaxOptions ajaxOptions) { this.viewContext = viewContext; this.pageSize = pageSize; this.currentPage = currentPage; this.totalItemCount = totalItemCount; this.sortBy = sortBy; this.sortDescending = sortDescending; this.linkWithoutPageValuesDictionary = valuesDictionary; this.ajaxOptions = ajaxOptions; this.ensureCollectionPageLinkValue(); } public HtmlString RenderHtml() { pageCount = (int)Math.Ceiling(totalItemCount / (double)pageSize); if (pageCount == 0) pageCount = 1; const int nrOfPagesToDisplay = 4; if (pageCount < currentPage) currentPage = pageCount; var sb = new StringBuilder(); // Previous sb.Append("<ul class=\"pagination pull-right\">"); sb.Append(currentPage > 1 ? GeneratePageLink("«", 1, "first") : "<li class=\"first disabled\"><a>«</a></li>"); sb.Append(currentPage > 1 ? GeneratePageLink("‹", currentPage - 1, "previous") : "<li class=\"previous disabled\"><a>‹</a></li>"); var start = 1; var end = pageCount; if (pageCount > nrOfPagesToDisplay) { var middle = (int)Math.Ceiling(nrOfPagesToDisplay / 2d) - 1; var below = (currentPage - middle); var above = (currentPage + middle); if (below < 4) { above = nrOfPagesToDisplay; below = 1; } else if (above > (pageCount - 4)) { above = pageCount; below = (pageCount - nrOfPagesToDisplay); } start = below; end = above; } if (start > 3) { sb.Append(GeneratePageLink("1", 1)); sb.Append(GeneratePageLink("2", 2)); sb.Append("<li class=\"disabled\"><a>...</a></li>"); } for (var i = start; i <= end; i++) { if (i == currentPage || (currentPage <= 0 && i == 0)) { sb.AppendFormat("<li class=\"active\"><a>{0}</a></li>", i); } else { sb.Append(GeneratePageLink(i.ToString(), i)); } } //if (end < (pageCount - 5)) //{ // sb.Append("<li class=\"disabled\"><a>...</a></li>"); // sb.Append(GeneratePageLink((pageCount - 3).ToString(), pageCount - 3)); // sb.Append(GeneratePageLink((pageCount - 2).ToString(), pageCount - 2)); // sb.Append(GeneratePageLink((pageCount - 1).ToString(), pageCount - 1)); // sb.Append(GeneratePageLink(pageCount.ToString(), pageCount)); //} if (end < pageCount)//后面还有其它页码 { int tempmin = pageCount - 3; sb.Append("<li class=\"disabled\"><a>...</a></li>"); for (int k = tempmin; k <= pageCount; k++) { sb.Append(GeneratePageLink(k.ToString(), k)); } //sb.Append(GeneratePageLink(pageCount.ToString(), pageCount)); } // Next sb.Append(currentPage < pageCount ? GeneratePageLink("›", (currentPage + 1), "next") : "<li class=\"next disabled\"><a>›</a></li>"); sb.Append(currentPage < pageCount ? GeneratePageLink("»", pageCount, "last") : "<li class=\"last disabled\"><a>»</a></li>"); sb.Append("</ul>"); return new HtmlString(sb.ToString()); } private string GeneratePageLink(string linkText, int pageNumber, string classText = "") { if (pageLinkValueDictionary.ContainsKey("Page")) { pageLinkValueDictionary.Remove("Page"); } pageLinkValueDictionary.Add("Page", pageNumber); // ‘Render‘ virtual path. var virtualPathForArea = RouteTable.Routes.GetVirtualPathForArea(viewContext.RequestContext, pageLinkValueDictionary); if (virtualPathForArea == null) return null; var stringBuilder = new StringBuilder("<li class=\"" + classText + "\"><a"); if (ajaxOptions != null) foreach (var ajaxOption in ajaxOptions.ToUnobtrusiveHtmlAttributes()) stringBuilder.AppendFormat(" {0}=\"{1}\"", ajaxOption.Key, ajaxOption.Value); stringBuilder.AppendFormat(" href=http://www.mamicode.com/"{0}\">{1}</a></li>", virtualPathForArea.VirtualPath, linkText); return stringBuilder.ToString(); } public HtmlString RenderGotoBaseUrl() { if (pageLinkValueDictionary.ContainsKey("Page")) { pageLinkValueDictionary.Remove("Page"); } var virtualPathForArea = RouteTable.Routes.GetVirtualPathForArea(viewContext.RequestContext, pageLinkValueDictionary); return new HtmlString(virtualPathForArea.VirtualPath); } public HtmlString RenderSwitchPageSizeBaseUrl() { if (pageLinkValueDictionary.ContainsKey("PageSize")) { pageLinkValueDictionary.Remove("PageSize"); } if (pageLinkValueDictionary.ContainsKey("Page")) { pageLinkValueDictionary.Remove("Page"); } var virtualPathForArea = RouteTable.Routes.GetVirtualPathForArea(viewContext.RequestContext, pageLinkValueDictionary); return new HtmlString(virtualPathForArea.VirtualPath); } private void ensureCollectionPageLinkValue() { pageLinkValueDictionary = new RouteValueDictionary(linkWithoutPageValuesDictionary) { { "SortBy", sortBy }, { "SortDescending", sortDescending } }; //{ { "Page", pageNumber }, { "PageSize", pageSize }, }; Dictionary<string, string> dict = new Dictionary<string, string>(); QueryStringHelper.ExtractQueryStringValuesFromUri(viewContext.HttpContext.Request.Url, ref dict); dict.Keys.ToList().ForEach(key => { if (!pageLinkValueDictionary.ContainsKey(key)) { pageLinkValueDictionary.Add(key, dict[key]); } }); // To be sure we get the right route, ensure the controller and action are specified. var routeDataValues = viewContext.RequestContext.RouteData.Values; routeDataValues.Keys.ToList().ForEach(key => { if (!pageLinkValueDictionary.ContainsKey(key)) { pageLinkValueDictionary.Add(key, routeDataValues[key]); } }); } }}
1.B.2,IPagingOption.cs
using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Web.Routing;namespace Healthcare.Framework.Web.Mvc.Pagination{ public interface IPagingOption { int Page { get; set; } int PageSize { get; set; } int? TotalCount { get; set; } string SortBy { get; set; } bool? SortDescending { get; set; } string OrderByExpression { get; } RouteValueDictionary RouteValues { get; set; } }}
1.B.3,IPagedList.cs
using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Web.Routing;namespace Healthcare.Framework.Web.Mvc.Pagination{ public interface IPagedList<T> : IList<T> { int PageCount { get; } int TotalItemCount { get; } int PageIndex { get; } int PageNumber { get; } int PageSize { get; } bool HasPreviousPage { get; } bool HasNextPage { get; } bool IsFirstPage { get; } bool IsLastPage { get; } string SortBy { get; } bool? SortDescending { get; } RouteValueDictionary RouteValues { get; } }}
1.B.4,PagingOption.cs
using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Web.Routing;namespace Healthcare.Framework.Web.Mvc.Pagination{ public class PagingOption : IPagingOption { public int Page { get; set; } public int PageSize { get; set; } public int? TotalCount { get; set; } public Int32? IsPagination { get; set; } public string ActionName { get; set; } public string SortBy { get; set; } public bool? SortDescending { get; set; } public bool ShowSummary { get; set; } public bool ShowGoto { get; set; } public bool ShowPageSize { get; set; } public PagingOption() { TotalCount = 0; PageSize = 10; Page = 1; } public RouteValueDictionary RouteValues { get; set; } public string OrderByExpression { get { return this.SortDescending.HasValue && this.SortDescending.Value ? this.SortBy + " desc" : this.SortBy + " asc"; } } public int PageTotal { get { if (TotalCount == null) { return (int)Math.Ceiling(0 / (double)PageSize); } return (int)Math.Ceiling(TotalCount.Value / (double)PageSize); } } }}
1.B.5,PagedList.cs
using System;using System.Collections.Generic;using System.Linq;using System.Linq.Dynamic;using System.Text;using System.Threading.Tasks;using System.Web.Routing;namespace Healthcare.Framework.Web.Mvc.Pagination{ public class PagedList<T> : List<T>, IPagedList<T> { public PagedList(IEnumerable<T> source, IPagingOption option) : this(source.AsQueryable(), option) { } public PagedList(IQueryable<T> source, IPagingOption option) { if (option == null) throw new ArgumentOutOfRangeException("PagingOption", "Value can not be null."); if (option.Page < 0) throw new ArgumentOutOfRangeException("index", "Value must be greater than 0."); if (option.PageSize < 1) throw new ArgumentOutOfRangeException("pageSize", "Value must be greater than 1."); if (source == null) source = new List<T>().AsQueryable(); var realTotalCount = source.Count(); PageSize = option.PageSize; PageIndex = option.Page; RouteValues = option.RouteValues; TotalItemCount = option.TotalCount.HasValue ? option.TotalCount.Value : realTotalCount; PageCount = TotalItemCount > 0 ? (int)Math.Ceiling(TotalItemCount / (double)PageSize) : 0; SortBy = option.SortBy; SortDescending = option.SortDescending; if (!string.IsNullOrEmpty(option.SortBy)) source = source.OrderBy(option.OrderByExpression); HasPreviousPage = (PageIndex > 0); HasNextPage = (PageIndex < (PageCount - 1)); IsFirstPage = (PageIndex <= 0); IsLastPage = (PageIndex >= (PageCount - 1)); if (TotalItemCount <= 0) return; var realTotalPages = (int)Math.Ceiling(realTotalCount / (double)PageSize); if (realTotalCount < TotalItemCount && realTotalPages <= PageIndex) AddRange(source.Skip((realTotalPages - 1) * PageSize).Take(PageSize)); else AddRange(source.Skip(PageIndex * PageSize).Take(PageSize)); } #region IPagedList Members public int PageCount { get; private set; } public int TotalItemCount { get; private set; } public int PageIndex { get; private set; } public int PageNumber { get { return PageIndex + 1; } } public int PageSize { get; private set; } public bool HasPreviousPage { get; private set; } public bool HasNextPage { get; private set; } public bool IsFirstPage { get; private set; } public bool IsLastPage { get; private set; } public string SortBy { get; private set; } public bool? SortDescending { get; private set; } public RouteValueDictionary RouteValues { get; set; } #endregion }}
1.B.6,PagingExtensions.cs
using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Web;using System.Web.Mvc;using System.Web.Mvc.Ajax;using System.Web.Mvc.Html;using System.Web.Routing;namespace Healthcare.Framework.Web.Mvc.Pagination{ public static class PagingExtensions { #region AjaxHelper extensions public static HtmlString Pager(this AjaxHelper ajaxHelper, int pageSize, int currentPage, int totalItemCount, AjaxOptions ajaxOptions) { return Pager(ajaxHelper, pageSize, currentPage, totalItemCount, null, null, ajaxOptions); } public static HtmlString Pager(this AjaxHelper ajaxHelper, int pageSize, int currentPage, int totalItemCount, string sortBy, bool? sortDescending, string actionName, AjaxOptions ajaxOptions) { return Pager(ajaxHelper, pageSize, currentPage, totalItemCount, sortBy, sortDescending, actionName, null, ajaxOptions); } public static HtmlString Pager(this AjaxHelper ajaxHelper, int pageSize, int currentPage, int totalItemCount, string actionName, AjaxOptions ajaxOptions) { return Pager(ajaxHelper, pageSize, currentPage, totalItemCount, actionName, null, ajaxOptions); } public static HtmlString Pager(this AjaxHelper ajaxHelper, int pageSize, int currentPage, int totalItemCount, object values, AjaxOptions ajaxOptions) { return Pager(ajaxHelper, pageSize, currentPage, totalItemCount, null, new RouteValueDictionary(values), ajaxOptions); } public static HtmlString Pager(this AjaxHelper ajaxHelper, int pageSize, int currentPage, int totalItemCount, string actionName, object values, AjaxOptions ajaxOptions) { return Pager(ajaxHelper, pageSize, currentPage, totalItemCount, null, null, actionName, new RouteValueDictionary(values), ajaxOptions); } public static HtmlString Pager(this AjaxHelper ajaxHelper, int pageSize, int currentPage, int totalItemCount, RouteValueDictionary valuesDictionary, AjaxOptions ajaxOptions) { return Pager(ajaxHelper, pageSize, currentPage, totalItemCount, null, valuesDictionary, ajaxOptions); } public static HtmlString Pager(this AjaxHelper ajaxHelper, int pageSize, int currentPage, int totalItemCount, string sortBy, bool? sortDescending, string actionName, RouteValueDictionary valuesDictionary, AjaxOptions ajaxOptions) { if (valuesDictionary == null) { valuesDictionary = new RouteValueDictionary(); } if (actionName != null) { if (valuesDictionary.ContainsKey("action")) { throw new ArgumentException("The valuesDictionary already contains an action.", "actionName"); } valuesDictionary.Add("action", actionName); } var pager = new Pager(ajaxHelper.ViewContext, pageSize, currentPage, totalItemCount, sortBy, sortDescending, valuesDictionary, ajaxOptions); return pager.RenderHtml(); } #endregion #region HtmlHelper extensions public static HtmlString Pager(this HtmlHelper htmlHelper, int pageSize, int currentPage, int totalItemCount) { return Pager(htmlHelper, pageSize, currentPage, totalItemCount, null, null); } public static HtmlString PagerT(this HtmlHelper htmlHelper, PagingOption options) { if (options == null) return new HtmlString(""); if (options.RouteValues == null) { options.RouteValues = new RouteValueDictionary(); } var pager = new PagerT(htmlHelper.ViewContext, options.PageSize, options.Page, options.TotalCount.HasValue ? options.TotalCount.Value : 0, options.SortBy, options.SortDescending, options.RouteValues, null); return pager.RenderHtml(); } public static HtmlString Pager(this HtmlHelper htmlHelper, int pageSize, int currentPage, int totalItemCount, string sortBy, bool? sortDescending) { return Pager(htmlHelper, pageSize, currentPage, totalItemCount, sortBy, sortDescending, null, null); } public static HtmlString Pager(this HtmlHelper htmlHelper, int pageSize, int currentPage, int totalItemCount, string actionName) { return Pager(htmlHelper, pageSize, currentPage, totalItemCount, actionName, null); } public static HtmlString Pager(this HtmlHelper htmlHelper, int pageSize, int currentPage, int totalItemCount, object values) { return Pager(htmlHelper, pageSize, currentPage, totalItemCount, null, new RouteValueDictionary(values)); } public static HtmlString Pager(this HtmlHelper htmlHelper, int pageSize, int currentPage, int totalItemCount, string actionName, object values) { return Pager(htmlHelper, pageSize, currentPage, totalItemCount, null, null, actionName, new RouteValueDictionary(values)); } public static HtmlString Pager(this HtmlHelper htmlHelper, int pageSize, int currentPage, int totalItemCount, RouteValueDictionary valuesDictionary) { return Pager(htmlHelper, pageSize, currentPage, totalItemCount, null, valuesDictionary); } public static HtmlString Pager(this HtmlHelper htmlHelper, int pageSize, int currentPage, int totalItemCount, string sortBy, bool? sortDescending, string actionName) { return Pager(htmlHelper, pageSize, currentPage, totalItemCount, sortBy, sortDescending, actionName, null); } public static HtmlString Pager(this HtmlHelper htmlHelper, int pageSize, int currentPage, int totalItemCount, string sortBy, bool? sortDescending, string actionName, RouteValueDictionary valuesDictionary) { if (valuesDictionary == null) { valuesDictionary = new RouteValueDictionary(); } if (actionName != null) { if (valuesDictionary.ContainsKey("action")) { throw new ArgumentException("The valuesDictionary already contains an action.", "actionName"); } valuesDictionary.Add("action", actionName); } var pager = new Pager(htmlHelper.ViewContext, pageSize, currentPage, totalItemCount, sortBy, sortDescending, valuesDictionary, null); return pager.RenderHtml(); } public static HtmlString Pager(this HtmlHelper htmlHelper, PagingOption options) { if (options == null) return new HtmlString(""); if (options.RouteValues == null) { options.RouteValues = new RouteValueDictionary(); } var pager = new Pager(htmlHelper.ViewContext, options.PageSize, options.Page, options.TotalCount.HasValue ? options.TotalCount.Value : 0, options.SortBy, options.SortDescending, options.RouteValues, null); return pager.RenderHtml(); } public static HtmlString PagerGotoURL(this HtmlHelper htmlHelper, PagingOption options) { if (options == null) return new HtmlString(""); if (options.RouteValues == null) { options.RouteValues = new RouteValueDictionary(); } var pager = new Pager(htmlHelper.ViewContext, options.PageSize, options.Page, options.TotalCount.HasValue ? options.TotalCount.Value : 0, options.SortBy, options.SortDescending, options.RouteValues, null); return pager.RenderGotoBaseUrl(); } public static HtmlString PagerGotoURL(this HtmlHelper htmlHelper, int pageSize, int currentPage, int totalItemCount, object values = null) { PagingOption options = new PagingOption() { Page = 1, PageSize = pageSize, TotalCount = totalItemCount, RouteValues = new RouteValueDictionary(values) }; return PagerGotoURL(htmlHelper, options); } public static HtmlString PagerSwitchPageSizeBaseUrl(this HtmlHelper htmlHelper, PagingOption options) { if (options == null) return new HtmlString(""); if (options.RouteValues == null) { options.RouteValues = new RouteValueDictionary(); } var pager = new Pager(htmlHelper.ViewContext, options.PageSize, options.Page, options.TotalCount.HasValue ? options.TotalCount.Value : 0, options.SortBy, options.SortDescending, options.RouteValues, null); return pager.RenderSwitchPageSizeBaseUrl(); } public static HtmlString PagerSwitchPageSizeBaseUrl(this HtmlHelper htmlHelper, int pageSize, int currentPage, int totalItemCount, object values = null) { PagingOption options = new PagingOption() { Page = 1, PageSize = pageSize, TotalCount = totalItemCount, RouteValues = new RouteValueDictionary(values) }; return PagerSwitchPageSizeBaseUrl(htmlHelper, options); } #endregion #region ActionLink extensions public static HtmlString ActionLink<T>(this AjaxHelper ajaxHelper, string name, string actionName, IPagedList<T> model, AjaxOptions ajaxOptions) { var sortDescending = model.SortBy != null && model.SortBy.Equals(name) && model.SortDescending.HasValue && model.SortDescending.Value ? false : true; var routeValues = new RouteValueDictionary(); routeValues.Add("SortBy", name); routeValues.Add("SortDescending", sortDescending); if (model.RouteValues != null) { foreach (var r in model.RouteValues) { routeValues.Add(r.Key, r.Value); } } IDictionary<string, object> htmlAttributes = new Dictionary<string, object>(); var css = ""; if (!string.IsNullOrEmpty(model.SortBy) && model.SortBy.Equals(name)) { if (model.SortDescending.HasValue && model.SortDescending.Value) css = "sort-desc"; else css = "sort-asc"; } else css = "sort-off"; htmlAttributes.Add("class", css); return ajaxHelper.ActionLink(name, actionName, routeValues, ajaxOptions, htmlAttributes); } public static HtmlString ActionLink<T>(this AjaxHelper ajaxHelper, string label, string name, string actionName, IPagedList<T> model, AjaxOptions ajaxOptions) { var sortDescending = model.SortBy != null && model.SortBy.Equals(name) && model.SortDescending.HasValue && model.SortDescending.Value ? false : true; var routeValues = new RouteValueDictionary(); routeValues.Add("SortBy", name); routeValues.Add("SortDescending", sortDescending); if (model.RouteValues != null) { foreach (var r in model.RouteValues) { routeValues.Add(r.Key, r.Value); } } IDictionary<string, object> htmlAttributes = new Dictionary<string, object>(); var css = ""; if (!string.IsNullOrEmpty(model.SortBy) && model.SortBy.Equals(name)) { if (model.SortDescending.HasValue && model.SortDescending.Value) css = "sort-desc"; else css = "sort-asc"; } else css = "sort-off"; htmlAttributes.Add("class", css); return ajaxHelper.ActionLink(label, actionName, routeValues, ajaxOptions, htmlAttributes); } public static HtmlString ActionLink<T>(this HtmlHelper htmlHelper, string name, string actionName, IPagedList<T> model) { var sortDescending = model.SortBy != null && model.SortBy.Equals(name) && model.SortDescending.HasValue && model.SortDescending.Value ? false : true; var routeValues = new { SortBy = name, SortDescending = sortDescending }; var css = ""; if (!string.IsNullOrEmpty(model.SortBy) && model.SortBy.Equals(name)) { if (model.SortDescending.HasValue && model.SortDescending.Value) css = "sort-desc"; else css = "sort-asc"; } else css = "sort-off"; var htmlAttributes = new { @class = css }; return htmlHelper.ActionLink(name, actionName, routeValues, htmlAttributes); } #endregion #region IQueryable<T> extensions public static IPagedList<T> ToPagedList<T>(this IQueryable<T> source, IPagingOption option) { return new PagedList<T>(source, option); } #endregion #region IEnumerable<T> extensions public static IPagedList<T> ToPagedList<T>(this IEnumerable<T> source, IPagingOption option) { return new PagedList<T>(source, option); } #endregion }}
1.B.7,
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cs-Panination
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