asp.net原创分页存储过程和分页实例

作者：袖梨 2022-06-25

我们先把子sql存储过程拿出来

分页存储过程。

 代码如下 复制代码

CREATE PROCEDURE [dbo].[proc_SplitPage]
    -- Add the parameters for the stored procedure here
    @tblName   varchar(255),       -- 表名
    @strFields varchar(1000) = '*', -- 需要返回的列，默认*
    @strOrder varchar(255)='',      -- 排序的字段名，必填
    @strOrderType varchar(10)='ASC', -- 排序的方式,默认ASC
    @PageSize   int = 10,          -- 页尺寸,默认10
    @PageIndex int = 1,           -- 页码,默认1
    @strWhere varchar(1500) = '' -- 查询条件 (注意: 不要加 where)
AS
declare @strSQL   varchar(5000)
if @strWhere !=''
set @strWhere=' where '+@strWhere

set @strSQL=
'SELECT '+@strFields+' FROM ('+
    'SELECT ROW_NUMBER() OVER (ORDER BY '+@strOrder+' '+@strOrderType+') AS

pos,'+@strFields+' '+
    'FROM '+@tblName+' '+@strWhere+
') AS sp
WHERE pos BETWEEN '+str((@PageIndex-1)*@PageSize+1)+' AND '+str(@PageIndex*@PageSize)


exec (@strSQL)


下面是个分页类pager{}

 代码如下 复制代码

public class Pager
    {
        private string _firstPageText;
        ///


        /// 最前一页文字显示 默认显示为"首页"
        ///
        public string FirstPageText
        {
            get {
                return string.IsNullOrEmpty(_firstPageText)? "首页" : _firstPageText;
            }
            set {
                _firstPageText = value;
            }
        }

        private string _prePageText;
        ///


        /// 上一页文字显示 默认显示为"上一页"
        ///
        public string PrePageText
        {
            get
            {
                return string.IsNullOrEmpty(_prePageText) ? "上一页" : _prePageText;
            }
            set
            {
                _prePageText = value;
            }
        }

        private string _nextPageText;
        ///


        /// 下一页文字显示 默认显示为"下一页"
        ///
        public string NextPageText
        {
            get
            {
                return string.IsNullOrEmpty(_nextPageText) ? "下一页" : _nextPageText;
            }
            set
            {
                _nextPageText = value;
            }
        }

        private string _lastPageText;
        ///


        /// 末页文字显示 默认显示为"末页"
        ///
        public string LastPageText
        {
            get
            {
                return string.IsNullOrEmpty(_lastPageText) ? "末页" : _lastPageText;
            }
            set
            {
                _lastPageText = value;
            }
        }

        ///


        /// 总记录数
        ///
        public int RecordCount { get; set; }

        private int _pagesize=15;
        ///


        /// 每页分页尺寸 默认为15
        ///
        public int PageSize {
            get {
                return _pagesize == 0 ? 15 : _pagesize;
            }set{
                _pagesize = value;
            }
        }

        private int _pageIndex=1;
        ///


        /// 当前页码
        ///
        public int PageIndex {
            get {
                return _pageIndex == 0 ? 1 : _pageIndex;
            }
            set {
                _pageIndex = value;
            }
        }

        private int _maxShowPageSize = 10;
        ///


        /// 显示页码列表的最大个数 默认为10
        ///
        public int MaxShowPageSize {
            get {
                return _maxShowPageSize;
            }
            set {
                _maxShowPageSize = value;
            }
        }

        private string _queryStringName;
        ///


        /// 页码在浏览器中传值的名称  默认为page
        ///
        public string QueryStringName {
            get {
                return string.IsNullOrEmpty(_queryStringName)? "page" : _queryStringName;
            }
            set {
                _queryStringName = value;
            }
        }

        ///


        /// 页面的URL
        ///
        public string URL {
            get {
                string url = HttpContext.Current.Request.Url.AbsoluteUri;//当前页面绝对路

径
                if (EnableUrlRewriting)//使用url重写
                {
                    url=url.Substring(0, url.LastIndexOf("/") + 1);//获取当前页面的目录路

径
                    url += UrlRewritePattern;
                }
                else {//普通带问号的页面传值
                    //demo.aspx
                    //demo.aspx?a=1
                    //demo.aspx?page=1
                    //demo.aspx?a=2&page=1
                    if (url.Contains("aspx?"))
                    {
                        if (Regex.IsMatch(url,@"page=[0-9]*$",RegexOptions.IgnoreCase))//

如果存在page=*的字符串
                        {
                            url = Regex.Replace(url, @"page=[0-9]*$", "",

RegexOptions.IgnoreCase);//替换掉page=*的字符串
                        }
                        url += QueryStringName + "={0}";
                    }
                    else {
                        url += "?" + QueryStringName + "={0}";
                    }
                }
                return url;
            }
        }

        private bool _enableUrlRewriting;
        ///


        /// URL是否重写 默认为flase
        ///
        public bool EnableUrlRewriting {
            get {
                return (object)_enableUrlRewriting == null ? false : _enableUrlRewriting;
            }
            set {
                _enableUrlRewriting = value;
            }
        }

        ///


        /// 页面URL重写规则，将页码传值用{0}来代替  比如list-1-{0}.html,启用该功能需要将

EnableUrlRewriting属性设为true
        ///


        public string UrlRewritePattern { get; set; }

        private string _className;
        ///


        /// 分页容器的css名称
        ///
        public string ClassName {
            get {
                return string.IsNullOrEmpty(_className) ? "paginator" : _className;
            }set{
                _className = value;
            }
        }

        private string _currentPageCss;
        ///


        /// 当前页面按钮css
        ///
        public string CurrentPageButtonCss {
            get {
                return string.IsNullOrEmpty(_currentPageCss) ? "cpb" : _currentPageCss;
            }set{
                _currentPageCss = value;
            }
        }

        private bool _showSpanText;
        ///


        /// Span 标签中文字信息是否显示 默认为false不显示
        ///
        public bool ShowSpanText {
            get {
                return (object)_showSpanText == null ? false : _showSpanText;
            }
            set {
                _showSpanText = value;
            }
        }

        private string _spanTextClass;
        ///


        /// 分页文字描述span标签css
        ///
        public string SpanTextClass {
            get {
                return string.IsNullOrEmpty(_spanTextClass) ? "stc" : _spanTextClass;
            }
            set {
                _spanTextClass = value;
            }
        }

        private string _submitButtonText;
        ///


        /// 确定按钮文字显示 默认显示"确定"
        ///
        public string SubmitButtonText {
            get {
                return string.IsNullOrEmpty(_submitButtonText) ? "确定" :

_submitButtonText;
            }
            set {
                _submitButtonText = value;
            }
        }
    }

分页显示html代码的拼接方法：

 代码如下 复制代码

public class SplitManager
    {
                public static string AspNetPagers(Pager pager)
        {
            StringBuilder sb = new StringBuilder();
            string attr="";
            int pagecount = 0;//当前页面的总层数
            int floorcount = 0;//分页的总层数
            int currentLastPage = 0;//当前最后一页的页码
            int pageNum = pager.RecordCount / pager.PageSize + 1;//总页数 1~24
            sb.AppendFormat("

n", pager.ClassName);
            attr=pager.PageIndex==1?"disabled=disabled":"";//标志当前页第一页是否相等 来控

制前俩个按钮的有效性
            sb.AppendFormat(GetAHtml(attr,string.Format

(pager.URL,1),pager.FirstPageText));//添加最前一页的代码
            sb.AppendFormat(GetAHtml(attr, string.Format(pager.URL, pager.PageIndex-1),

pager.PrePageText));//添加上一页的代码
            pagecount = pager.PageIndex/pager.MaxShowPageSize;//当前页数 0~1~2
            pagecount = pager.PageIndex % pager.MaxShowPageSize == 0 ? pagecount - 1 :

pagecount;//清除当 当前页数为分页页码数的整数倍页时除数多一的状况
            floorcount = pageNum / pager.MaxShowPageSize;//页面层数 0~1~2
            currentLastPage=pageNum

pageNum:pager.MaxShowPageSize * (pagecount + 1);
            if (pager.PageIndex > pager.MaxShowPageSize)//当当前序号大于每页页码个数时显示

再前端...
            {
                sb.AppendFormat(GetAHtml("", string.Format(pager.URL,

pager.MaxShowPageSize * pagecount), "..."));
            }
            for (int i = pager.MaxShowPageSize * pagecount + 1; i <= currentLastPage; i++)
            {
                if (i == pager.PageIndex)//判断循环页面是否为当前页
                {
                    sb.AppendFormat(GetSpanHtml(i, pager.CurrentPageButtonCss));
                }
                else {
                    sb.AppendFormat(GetAHtml("", string.Format(pager.URL, i),i.ToString

()));
                }
            }
            if (pager.PageIndex <= pager.MaxShowPageSize * floorcount)//当当前序号小于倒数

第二页页码时显示在后端...
            {
                sb.AppendFormat(GetAHtml("", string.Format(pager.URL,

pager.MaxShowPageSize * (pagecount + 1) + 1), "..."));
            }
            attr = pager.PageIndex == pageNum ? "disabled=disabled" : "";//标志当前页最后

一页是否相等 来控制后俩个按钮的有效性
            sb.AppendFormat(GetAHtml(attr, string.Format(pager.URL, pager.PageIndex+1),

pager.NextPageText));//添加后一页的代码
            sb.AppendFormat(GetAHtml(attr, string.Format(pager.URL, pageNum),

pager.LastPageText));//添加最后一页的代码
            if (pager.ShowSpanText)//是否显示分页文字span标签显示
            {
                sb.AppendFormat("共{0}页,每页

{1}条记录 n", pageNum, pager.PageSize);
                sb.AppendFormat("到第

style="width:20px;" name="jump" value="{0}" />页", pager.PageIndex == pageNum ?

pageNum : pager.PageIndex + 1);
                sb.AppendFormat("

onclick="javascript:jump();">" + pager.SubmitButtonText + "n");
                sb.Append(GetJumpScript(pager.URL));//添加按钮跳转的javascript代码
            }
            sb.AppendFormat("

");//
            return sb.ToString();
        }

        ///


        /// get the html of a label
        ///
        /// a's title
        /// the url of a
        /// the attribute
        /// return html string
        private static string GetAHtml(string attr,string url,string title)
        {
            return ""+title+"n";
        }

        ///


        /// get the html of a label
        ///
        /// the content of span
        /// Class style Name
        /// return html string
        private static string GetSpanHtml(int num, string className)
        {
            return "" + num + "n";
        }

        ///


        /// 获取跳转的javascript代码
        ///
        /// 当前分页的url规则
        /// 返回一个javascript代码
        private static string GetJumpScript(string url)
        {
            string scriptstr = "n";
            return scriptstr;
        }

    }

最精简必要的几个参数传进去就能显示分页效果了：

 代码如下 复制代码

protected string str = "";
        protected void Page_Load(object sender, EventArgs e)
        {
            Pager pager = new Pager() { RecordCount = 350,
                PageSize = 15,
                MaxShowPageSize=10,
                PageIndex = Convert.ToInt32(Request.QueryString["page"]),
            ShowSpanText=true};
            str = SplitManager.AspNetPagers(pager);

        }

供测试的css：

同时配合为了配合分页，再给出一个DataTable转泛型列表的一个方法和一个分页存储过程。

此转换方法需配合相应的实体类，并且实体类中需对象相应表的字段名，不区分大小写。

 代码如下 复制代码

#region DataTable To List/Model

        ///


        /// DataTable To List
        ///
        /// object type
        /// DataTable
        /// return a List Model type
        public static List DataTableToObjectList(DataTable dt) where T : new()
        {
            DataRowCollection drc = dt.Rows;
            int columncount = drc.Count;
            List result = new List();    //declare the generic type of return
            Type type = typeof(T);
           
            PropertyInfo[] propertys = type.GetProperties

(BindingFlags.IgnoreCase|BindingFlags.Instance|BindingFlags.Public|BindingFlags.SetPropert

y);   //get the collections of the model
            foreach (DataRow r in drc)
            {
                result.Add(DataRowToObjectModel(r, propertys));
            }    
            return result;
           
        }
       
        ///


        /// DataRow To a Model
        ///
        /// the type of Model
        /// DataRow
        /// the object to Model
        /// return a Model Type
        private static T DataRowToObjectModel(DataRow r, PropertyInfo[] propertys)

where T : new()
        {
            T t = new T();
            for (int i = 0; i < propertys.Length; i++)
            {
                object obj = r[propertys[i].Name];
                if (obj != null)
                {
                    if (propertys[i].PropertyType == typeof(int))
                        propertys[i].SetValue(t, PublicMethod.GetInt(obj), null);
                    if (propertys[i].PropertyType == typeof(string))
                        propertys[i].SetValue(t, obj.ToString(), null);
                    if (propertys[i].PropertyType == typeof(DateTime))
                        propertys[i].SetValue(t, PublicMethod.GetDateTime(obj), null);
                }
            }
            return t;
        }
        #endregion


好了，这样就全部KO了。

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