asp.net mvc 自定义pager封装与优化

2018-06-22 06:05:02来源：未知阅读 ()

asp.net mvc 自定义pager封装与优化

Intro

之前做了一个通用的分页组件，但是有些不足，从翻页事件和分页样式都融合在后台代码中，到翻页事件可以自定义，再到翻页和样式都和代码分离，自定义分页 pager 越来越容易扩展了。

HtmlHelper Pager扩展

Pager V1.0 :

 1     /// <summary>
 2     /// Pager V1.0
 3     /// </summary>
 4     /// <param name="helper">HtmlHelper</param>
 5     /// <param name="pager">分页信息</param>
 6     /// <returns></returns>
 7     public static MvcHtmlString Pager(this HtmlHelper helper, PagerModel pager)
 8     {
 9         StringBuilder sbHtmlText = new StringBuilder();
10         sbHtmlText.Append("<div style=\"text-align:center\"><nav><ul  class=\"pagination\">");
11         if (pager.PageIndex <= 1)
12         {
13             sbHtmlText.Append("<li class=\"disabled\"><a href=\"javascript:void(0)\" aria-label=\"Previous\"><span aria-hidden=\"true\">&laquo;</span></a></li>");
14         }
15         else
16         {
17             sbHtmlText.AppendFormat("<li><a href=\"javascript:loadData(1)\" aria-label=\"1\"><span aria-hidden=\"true\">&laquo;</span></a></li>", pager.PageIndex - 1);
18             sbHtmlText.AppendFormat("<li><a href=\"javascript:loadData({0})\">{0}</a></li>", pager.PageIndex - 1);
19         }
20         sbHtmlText.AppendFormat("<li class=\"active\"><a href=\"javascript:void(0)\">{0}<span class=\"sr-only\">(current)</span></a></li>", pager.PageIndex);
21         if (pager.PageIndex >= pager.PageCount)
22         {
23             sbHtmlText.Append("<li class=\"disabled\"><a href=\"javascript:void(0)\" aria-label=\"Next\"><span aria-hidden=\"true\">&raquo;</span></a></li>");
24         }
25         else
26         {
27             sbHtmlText.AppendFormat("<li><a href=\"javascript:loadData({0})\">{0}</a></li>", pager.PageIndex + 1);
28             sbHtmlText.AppendFormat("<li><a href=\"javascript:loadData({0})\" aria-label=\"Next\"><span aria-hidden=\"true\">&raquo;</span></a></li>", pager.PageIndex + 1);
29         }
30         sbHtmlText.Append("</ul></nav>");
31         sbHtmlText.AppendFormat("<div><span>每页有<strong>{0}</strong>条数据，一共有<strong>{1}</strong>页，总计<strong>{2}</strong>条数据</span></div></div>", pager.PageSize, pager.PageCount, pager.TotalCount);
32         return MvcHtmlString.Create(sbHtmlText.ToString());
33     }

Pager V2.0

 1     /// <summary>
 2     /// Pager V2.0
 3     /// </summary>
 4     /// <param name="helper">HtmlHelper</param>
 5     /// <param name="pager">分页信息</param>
 6     /// <param name="onPageChange">翻页事件</param>
 7     /// <returns></returns>
 8     public static MvcHtmlString Pager(this HtmlHelper helper, PagerModel pager, Func<int, string> onPageChange)
 9     {
10         StringBuilder sbHtmlText = new StringBuilder();
11         sbHtmlText.Append("<div style=\"text-align:center\"><nav><ul  class=\"pagination\">");
12         if (pager.PageIndex <= 1)
13         {
14             sbHtmlText.Append("<li class=\"disabled\"><a href=\"javascript:void(0)\" aria-label=\"Previous\"><span aria-hidden=\"true\">&laquo;</span></a></li>");
15         }
16         else
17         {
18             sbHtmlText.AppendFormat("<li><a href=\"{0}\" aria-label=\"Previous\"><span aria-hidden=\"true\">&laquo;</span></a></li>", onPageChange(pager.PageIndex - 1));
19             sbHtmlText.AppendFormat("<li><a href=\"{0}\">{1}</a></li>", onPageChange(pager.PageIndex - 1), pager.PageIndex - 1);
20         }
21         sbHtmlText.AppendFormat("<li class=\"active\"><a href=\"javascript:void(0)\">{0}<span class=\"sr-only\">(current)</span></a></li>", pager.PageIndex);
22         if (pager.PageIndex >= pager.PageCount)
23         {
24             sbHtmlText.Append("<li class=\"disabled\"><a href=\"javascript:void(0)\" aria-label=\"Next\"><span aria-hidden=\"true\">&raquo;</span></a></li>");
25         }
26         else
27         {
28             sbHtmlText.AppendFormat("<li><a href=\"{0}\">{1}</a></li>", onPageChange(pager.PageIndex + 1), pager.PageIndex + 1);
29             sbHtmlText.AppendFormat("<li><a href=\"{0}\" aria-label=\"Next\"><span aria-hidden=\"true\">&raquo;</span></a></li>", onPageChange(pager.PageIndex + 1));
30         }
31         sbHtmlText.Append("</ul></nav>");
32         sbHtmlText.AppendFormat("<div><span>每页有<strong>{0}</strong>条数据，一共有<strong>{1}</strong>页，总计<strong>{2}</strong>条数据</span></div></div>", pager.PageSize, pager.PageCount, pager.TotalCount);
33         return MvcHtmlString.Create(sbHtmlText.ToString());
34     }

Pager V3.0

 1     /// <summary>
 2     /// Pager V3.0
 3     /// </summary>
 4     /// <param name="helper">HtmlHelper</param>
 5     /// <param name="pager">分页信息</param>
 6     /// <param name="onPageChange">翻页地址或事件</param>
 7     /// <param name="pagerViewName">分页分部视图名称</param>
 8     /// <param name="displayMode">分页显示模式</param>
 9     /// <returns></returns>
10     public static MvcHtmlString Pager(this HtmlHelper helper, PagerModel pager, Func<int, string> onPageChange, string pagerViewName, PagingDisplayMode displayMode = PagingDisplayMode.Always)
11     {
12         pager.OnPageChange = onPageChange;
13         pager.PagingDisplayMode = displayMode;
14         return MvcHtmlString.Create(helper.Partial(pagerViewName, pager).ToHtmlString());
15     }