[ExtNet]Grid怎么实现服务器端分页、排序、查询？-MS SQL存储过程分页

存储过程：

CREATE	 procedure   [dbo].[AspNetPage]
    @tblName       varchar(1000),        -- 表名
    @SelectFieldName    varchar(4000),              -- 要显示的字段名(不要加select)
    @strWhere       varchar(4000),              -- 查询条件(注意: 不要加 where)
    @OrderFieldName      varchar(255),               -- 排序索引字段名
    @PageSize       int ,                 -- 页大小
    @PageIndex      int = 1,                  -- 页码
    @iRowCount      int output,                 -- 返回记录总数
    @OrderType      bit = 0                  -- 设置排序类型, 非 0 值则降序
           
AS
declare @strSQL    varchar(4000)       -- 主语句
declare @strTmp    varchar(4000)        -- 临时变量
declare @strOrder varchar(400)        -- 排序类型
declare @strRowCount    nvarchar(4000)      -- 用于查询记录总数的语句
set @OrderFieldName=ltrim(rtrim(@OrderFieldName))
if @OrderType != 0
begin
    set @strTmp = '<(select min'
    set @strOrder = ' order by ' + @OrderFieldName +' desc'
end
else
begin
    set @strTmp = '>(select max'
    set @strOrder = ' order by ' + @OrderFieldName +' asc'
end
set @strSQL = 'select top ' + str(@PageSize) + @SelectFieldName+' from '
    + @tblName + ' where ' + @OrderFieldName + @strTmp + '('
    + right(@OrderFieldName,len(@OrderFieldName)-charindex('.',@OrderFieldName)) + ') from (select top ' + str((@PageIndex-1)*@PageSize)
    + @OrderFieldName + ' from ' + @tblName + @strOrder + ') as tblTmp)'
    + @strOrder
if @strWhere != ''
    set @strSQL = 'select top ' + str(@PageSize) + @SelectFieldName+' from '
        + @tblName + ' where ' + @OrderFieldName + @strTmp + '('
        + right(@OrderFieldName,len(@OrderFieldName)-charindex('.',@OrderFieldName)) + ') from (select top ' + str((@PageIndex-1)*@PageSize)
        + @OrderFieldName + ' from ' + @tblName + ' where ' + @strWhere + ' '
        + @strOrder + ') as tblTmp) and ' + @strWhere + ' ' + @strOrder
if @PageIndex = 1
begin
    set @strTmp = ''
    if @strWhere != ''
        set @strTmp = ' where ' + @strWhere
    set @strSQL = 'select top ' + str(@PageSize) + @SelectFieldName+' from '
        + @tblName + @strTmp + ' ' + @strOrder
end
exec(@strSQL)
if @strWhere!=''
begin
set @strRowCount = 'select @iRowCount=count(*) from ' + @tblName+' where '+@strWhere
end
else
begin
set @strRowCount = 'select @iRowCount=count(*) from ' + @tblName
end
exec sp_executesql @strRowCount,N'@iRowCount int out',@iRowCount out

HTML:

    <ext:ResourceManager ID="ResourceManager1" runat="server">
    </ext:ResourceManager>
    <ext:Store runat="server" ID="ItemStore" OnRefreshData="Store1_RefershData">
        <Reader>
            <ext:JsonReader>
                <Fields>
                    <ext:RecordField Name="MB001" />
                    <ext:RecordField Name="MB002" />
                </Fields>
            </ext:JsonReader>
        </Reader>
        <Proxy>
            <ext:PageProxy>
            </ext:PageProxy>
        </Proxy>
    </ext:Store>
    <ext:TextField runat="server" ID="txtItem">
    </ext:TextField>
    <ext:Button runat="server" ID="btnQuery" Text="查询" Icon="Find">
        <DirectEvents>
          <Click OnEvent="ShowChage"></Click>
        </DirectEvents>
    </ext:Button>
    <ext:GridPanel ID="ItemGrid" runat="server" Border="true" Margins="5 5 5 5" AnchorHorizontal="98%"
        Height="550" Icon="Layers" TrackMouseOver="true" StripeRows="true" Title="品号基本信息"
        StoreID="ItemStore">
        <ColumnModel ID="ColumnModel1" runat="server">
            <Columns>
                <ext:Column Header="品号" DataIndex="MB001" Width="250">
                </ext:Column>
                <ext:Column Header="品名" DataIndex="MB002" Width="250">
                </ext:Column>
            </Columns>
        </ColumnModel>
        <LoadMask ShowMask="true" />
        <SelectionModel>
            <ext:RowSelectionModel ID="RowSelectionModel1" runat="server" />
        </SelectionModel>
        <BottomBar>
            <ext:PagingToolbar ID="PagingToolBar1" StoreID="ItemStore" PageSize="3" runat="server" />
        </BottomBar>
    </ext:GridPanel>

CS:

protected void Store1_RefershData(object sender, StoreRefreshDataEventArgs e)
        {
            int PageSize = this.PagingToolBar1.PageSize; //获取当前在页面中PagingToolBar 的PageSize的值
            int Count = 0;
            int CurPage = e.Start / PageSize + 1; //获取当前的页码是多少，也就是第几页
            string strWhere = "";
            if (txtItem.Text.Trim() != "") 
            {
                strWhere = "  MB001 like '%" + txtItem.Text.Trim() + "%'";
            }

            var store = this.ItemGrid.GetStore();

            DataTable dt = GetPageList("INVMB", " MB001,MB002,MB003", strWhere, PageSize, CurPage, out Count); //连接数据库
            e.Total = Count;
            this.PagingToolBar1.DisplayMsg = CurPage + " - " + PageSize + "条 共 " + e.Total + " 条";
            if (Count > 0)
            {
                store.DataSource = dt;//绑定数据
                store.DataBind();
            }
            else
            {
                X.Msg.Alert("查询结果", "<font style='color:red;'>没有找到任何数据!</font>").Show();
            }
        }
        /// <summary>
        /// 
        /// </summary>
        /// <param name="TableName">表名称</param>
        /// <param name="ReturnFields">要显示的字段名</param>
        /// <param name="strwhere">查询条件</param>
        /// <param name="PageSize">每页显示数据条数</param>
        /// <param name="CurPage">当前第几页，页码</param>
        /// <param name="RowCount">返回的总页数</param>
        /// <returns></returns>
        public DataTable GetPageList(string TableName, string ReturnFields, string strwhere, int PageSize, int CurPage, out int RowCount)
        {
            SqlCommand cmd = new SqlCommand("AspNetPage");//存储过程名称
            cmd.CommandType = CommandType.StoredProcedure;
            cmd.Parameters.AddWithValue("@tblName", TableName); //表名称
            cmd.Parameters.AddWithValue("@OrderFieldName", "MB001");//排序索引字段名
            cmd.Parameters.AddWithValue("@PageIndex", CurPage);//当前第几页，页码
            cmd.Parameters.AddWithValue("@PageSize", PageSize);//每页显示数据条数
            cmd.Parameters.AddWithValue("@SelectFieldName", ReturnFields);//要显示的字段名(不要加select)
            cmd.Parameters.AddWithValue("@OrderType", 1);//设置排序类型, 非 0 值则降序
            cmd.Parameters.AddWithValue("@strWhere", strwhere);//查询条件(注意: 不要加 where)
            cmd.Parameters.Add(new SqlParameter("@iRowCount", SqlDbType.Int));
            cmd.Parameters["@iRowCount"].Direction = ParameterDirection.Output;
            DataTable dt = RunProcedureCmd(cmd);
            RowCount = Convert.ToInt32(cmd.Parameters["@iRowCount"].Value.ToString()); //返回的总页数
            return dt;
        }
        /// <summary>
        /// 执行存储过程，返回DataTable
        /// </summary>
        /// <param name="cmd">存储过程名称</param>
        /// <returns></returns>
        public DataTable RunProcedureCmd(SqlCommand cmd)
        {
            DataTable result = new DataTable();
            SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["DEMO"].ConnectionString);//你自己的链接字符串
            try
            {
                if ((conn.State == ConnectionState.Closed))
                {
                    conn.Open();
                }
                cmd.Connection = conn;
                SqlDataAdapter da = new SqlDataAdapter(cmd);
                da.Fill(result);
                da.Dispose();
                conn.Close();
                conn.Dispose();
                return result;
            }
            catch (Exception ex)
            {
                conn.Close();
                conn.Dispose();
                throw ex;
            }

        }

    }

Oracle版本：

create or replace package pkg_AspNetPage is

  type mycursor  is ref cursor;
    
  procedure proc_AspNetPage(tblName in varchar2,SelectFieldName in varchar2,strWhere in varchar2,OrderFieldName in varchar2,OrderType in number, start1 in number,limit1 in number,RecoudCount out number,datatable out mycursor );

end pkg_AspNetPage;



create or replace package body pkg_AspNetPage is

procedure proc_AspNetPage(tblName in varchar2,SelectFieldName in varchar2,strWhere in varchar2,OrderFieldName in varchar2,OrderType in number, start1 in number,limit1 in number,RecoudCount out number,datatable out mycursor ) is
sqltxt varchar2(4000);
v_sql varchar2(4000);
v_ordertype varchar2(10);
begin
IF OrderType=0 THEN
v_ordertype:='asc';
ELSE
v_ordertype:='desc';
END IF;

 sqltxt:='select * from ' || tblName || ' u where ' || strWhere ||' order by ' || OrderFieldName || ' ' || v_ordertype;
 sqltxt:='select rownum rn,t.* from ('||sqltxt||') t'; 
 v_sql:='select count(*) from('||sqltxt||')';

 execute immediate v_sql into RecoudCount;
 v_sql := 'select '|| SelectFieldName ||' from (' || sqltxt || ') where rn between ' ||start1 || ' and ' || limit1;
 
 open datatable for v_sql;
end proc_AspNetPage;
end pkg_AspNetPage;

CS

using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Text;
using System.Data.OracleClient;
using System.Collections;       
//操作函数
 public static readonly string CONN_STRING_Oracle = "Data Source=XXXX;Password=XXXX;User ID=XXXX";

        public static OracleConnection conn = new OracleConnection(CONN_STRING_Oracle);


        public static void OpenConnection()    
        {
            if (conn.State != ConnectionState.Open)
                conn.Open();
        }

        public static void CloseConnection()    
        {
            if (conn.State == ConnectionState.Open)
                conn.Close();
        }


public static DataTable GetPageList_Oracle(string tblName, string selectFieldName, string strWhere, string OrderFieldName, int OrderType, int start, int limit, out int RecoudCount)
        {

            try
            {
                OracleParameter[] optr = new OracleParameter[9];  // 初始化参数

                optr[0] = new OracleParameter();
                optr[0].ParameterName = "tblName";
                optr[0].OracleType = OracleType.VarChar;
                optr[0].Value = tblName;

                optr[1] = new OracleParameter();
                optr[1].ParameterName = "SelectFieldName";
                optr[1].OracleType = OracleType.VarChar;
                optr[1].Value = selectFieldName;

                optr[2] = new OracleParameter();
                optr[2].ParameterName = "strWhere";
                optr[2].OracleType = OracleType.VarChar;
                optr[2].Value = strWhere;

                optr[3] = new OracleParameter();
                optr[3].ParameterName = "OrderFieldName";
                optr[3].OracleType = OracleType.VarChar;
                optr[3].Value = OrderFieldName;

                optr[4] = new OracleParameter();
                optr[4].ParameterName = "OrderType";
                optr[4].OracleType = OracleType.Number;
                optr[4].Value = OrderType;

                optr[5] = new OracleParameter();
                optr[5].ParameterName = "start1";
                optr[5].OracleType = OracleType.Number;
                optr[5].Value = start;

                optr[6] = new OracleParameter();
                optr[6].ParameterName = "limit1";
                optr[6].OracleType = OracleType.Number;
                optr[6].Value = limit;

                optr[7] = new OracleParameter();
                optr[7].ParameterName = "RecoudCount";
                optr[7].OracleType = OracleType.Number;
                optr[7].Direction = ParameterDirection.Output;

                optr[8] = new OracleParameter();
                optr[8].ParameterName = "datatable";
                optr[8].OracleType = OracleType.Cursor;
                optr[8].Direction = ParameterDirection.Output;

                OracleCommand cmd = new OracleCommand();
                cmd.CommandText = "pkg_AspNetPage.proc_AspNetPage";
                cmd.CommandType = CommandType.StoredProcedure;

                foreach (OracleParameter soptr in optr)
                {
                    cmd.Parameters.Add(soptr);
                }

                DataTable dt = RunProcedureCmd(cmd);   //执行存储过程
                RecoudCount = Int32.Parse(optr[7].Value.ToString());
                return dt;

            }
            catch
            {
                RecoudCount = 0;
                return null;
            }
        }

        public static DataTable RunProcedureCmd(OracleCommand cmd)
        {
            DataTable result = new DataTable();
            try
            {
                OpenConnection();
                cmd.Connection = conn;
                OracleDataAdapter da = new OracleDataAdapter(cmd);
                da.SelectCommand.ExecuteNonQuery();
                da.Fill(result);
                return result;
            }
            catch (Exception ex)
            {
                throw ex;
            }
            finally
            {
                CloseConnection();
            }
        }

   protected void Store1_RefreshData(object sender, StoreRefreshDataEventArgs e)
    {
        int PageSize = this.PagingToolBar1.PageSize; //获取当前在页面中PagingToolBar 的PageSize的值
        int Count = 0;
        int CurPage = e.Start / PageSize + 1; //获取当前的页码是多少，也就是第几页

        int start = PageSize * (CurPage - 1) + 1;
        int limit = start + PageSize - 1;

        string strWhere = "1=1"; //编辑条件
        int order=1; //1为倒序，0为顺序
        DataTable dt = new DataTable();
        dt = Opp.OracleOpp.GetPageList_Oracle("(表名)", "ID,...(字段列表)", strWhere, "ID", order, start, limit, out Count); 
        Store1.DataSource = dt;
        Store1.DataBind();
        e.Total = Count;
    }