Detailed explanation of how MVC generates page number selector to return HTML code?

I mainly talk about this code being used for MVC distribution pages.

Let’s look at the final effect first:

##The style is the paging "pagination" in bootstrap3. If you don't use bootstrap, it is not big

Page number The generated code is:

public string GetPaginationHtml(PaginationViewModel p)
{
    var PageNum = p.Page;//当前页码（页码从1开始）
    var PageCount = p.PageCount;//总页数
    var ItemCount = p.ItemCount;//总条数

    var showPageNum = 6;//显示数字的页面数量

    var html = new StringBuilder();
    html.Append(string.Format("<ul class=&#39;pagination&#39; id=&#39;{0}&#39; data-data=&#39;{1}&#39;>", p.ULID, p.Data));//ULID和Data是方便在前台增加事件用的
    if (PageCount > 1)
    {
        var startPage = 1;
        if (showPageNum > PageCount)
        {
            startPage = 1;
        }
        else
        {
            if (PageNum - (showPageNum / 2) <= 0)
            {
                startPage = 1;
            }
            else if (PageNum + (showPageNum / 2) >= PageCount)
            {
                startPage = PageCount - showPageNum;
            }
            else
            {
                startPage = PageNum - (showPageNum / 2);
            }
        }
        startPage = (startPage == 0 ? 1 : startPage);//第一个开始显示数字的页码
        //上一页按钮
        html.Append(string.Format("<li class=&#39;{0}&#39;>
        <a href=&#39;#&#39; class=&#39;js-pageSelect&#39; data-page=&#39;{1}&#39;>
        <span>上一页</span></a></li>", PageNum <= 1 ? "disabled" : "", PageNum - 1));

        if (startPage > 1)//生成第一页按钮和中间省略号
        {
            html.Append("<li><a class=&#39;js-pageSelect&#39;&#39; href=&#39;#&#39; data-page=&#39;1&#39;>1</a></li>");
            if (startPage > 2)
            {
                html.Append("<li><span>...</span></li>");
            }
        }
        for (int i = startPage; i <= (startPage + showPageNum); i++)//生成页码
        {
            if (i > PageCount)
            {
                break;
            }
            html.Append(string.Format("<li class=&#39;{0}&#39;>
            <a class=&#39;js-pageSelect&#39;&#39; href=&#39;#&#39; data-page=&#39;{1}&#39;>{2}</a></li>", i == PageNum ? "active" : "", i, i));
        }

        //生成最后一页按钮和中间省略号
        int maxShowPage = startPage + showPageNum;
        if (maxShowPage <= PageCount - 1)
        {
            if(maxShowPage <= PageCount - 2)
            {
                html.Append("<li><span>...</span></li>");
            }
            html.Append(string.Format("<li><a class=&#39;js-pageSelect&#39;&#39; href=&#39;#&#39; data-page=&#39;{0}&#39;>{1}</a></li>",PageCount,PageCount));
        }
        //显示下一页按钮
        html.Append(string.Format("<li class=&#39;{0}&#39;><a href=&#39;#&#39; class=&#39;js-pageSelect&#39; data-page=&#39;{1}&#39;>
        <span>下一页</span></a></li>", PageNum >= PageCount ? "disabled" : "", PageNum + 1));
        //显示页码信息
        html.Append(string.Format("<li><span>第{0}页 共{1}页{2}条内容</span></li>", PageNum, PageCount, ItemCount));
    }
    else
    {
        //内容不足一页时显示的内容
        html.Append(string.Format("<li><span>共1页{0}条内容</span></li>", ItemCount));
    }
    return html.ToString();
}

When used, place it directly in MVC Controllers. ActionResult returns Content (html).

You can directly enter

@Html.Action("", new {page = 1,pageSize = 20, ... })

or

$.ajax({
  url: '/Function/FileArchiveSelectShouWenDengJiTableMessage',
  type: 'post',
  dataType: 'html',
  data: {
    page: page,
    pageSize: pagesize,
    ...
    },
})
.done(function (data) {
  $('#ShouWenPageSelect').html(data);
  InitPageSelectEvent();
});

The above is the detailed content of Detailed explanation of how MVC generates page number selector to return HTML code?. For more information, please follow other related articles on the PHP Chinese website!