联合查询到gridview

 using com.DAL.Base;
 using DAL.ruanmou;
 using System;
 using System.Collections.Generic;
 using System.Data;
 using System.Linq;
 using System.Text;
 using System.Web;
 using System.Web.UI;
 using System.Web.UI.WebControls;

 namespace ASP20170211
 {
     public partial class UnionSearch : System.Web.UI.Page
     {
         protected void Page_Load(object sender, EventArgs e)
         {
             BindData();
         }
         public int PageSize = ;
         private int _page;
         public int PageIndex
         {
             get
             {
                 try
                 {
                     _page = Request.QueryString["page"] == null ?  : Convert.ToInt32(Request.QueryString["page"].ToString());
                 }
                 catch (Exception ex)
                 {
                     _page = ;
                 }
                 return _page;
             }
             set { _page = value; }
         }
         List<dbParam> listPm = new List<dbParam>();
         public string GetSql()
         {
             StringBuilder sb = new StringBuilder();
             sb.Append("1=1");
             if (!string.IsNullOrEmpty(txtSUserName.Text.Trim()))
             {
                 sb.Append(" and UserName=@UserName");
                 listPm.Add(new dbParam() { ParamName = "@UserName", ParamValue = txtSUserName.Text.Trim() });
             }
             if (ddlPhase.SelectedIndex > )
             {
                 sb.Append(" and Phase=@Phase");
                 listPm.Add(new dbParam() { ParamName = "@Phase", ParamValue = ddlPhase.SelectedValue });
             }
             return sb.ToString();
         }
         public void BindData()
         {
             DataTable dt = StuAskDal.GetUserInnerAskDt(PageSize, PageIndex, GetSql(), listPm);
             GridView1.DataSource = dt;
             GridView1.DataBind();
         }
         /// <summary>
         /// 总页数
         /// </summary>
         /// <returns></returns>
         public int PageCount()
         {
             int iCount = StuAskDal.GetUserInnerAskCount(listPm, GetSql());
             if (iCount % PageSize == )
             {
                 return iCount / PageSize;
             }
             else
             {
                 double d = Convert.ToDouble(iCount) / Convert.ToDouble(PageSize);
                 return Convert.ToInt32(Math.Ceiling(d));
             }
         }
         /// <summary>
         /// 分页
         /// </summary>
         /// <returns></returns>
         public string GetPager()
         {
             StringBuilder sb = new StringBuilder();
             sb.Append(@"<div><a href=""/UnionSearch.aspx?page=1"">第一页</a></div>");
             if (PageIndex == )
             {
                 sb.Append(@"<div><a href=""javascript:;"">上一页</a></div>");
             }
             else
             {
                 sb.Append(string.Format(@"<div><a href=""/UnionSearch.aspx?page={0}"">上一页</a></div>", PageIndex - ));
             }
             if (PageIndex == PageCount())
             {
                 sb.Append(@"<div><a href=""javascript:;"">下一页</a></div>");
             }
             else
             {
                 sb.Append(string.Format(@"<div><a href=""/UnionSearch.aspx?page={0}"">下一页</a></div>", PageIndex + ));
             }
             sb.Append(string.Format(@"<div><a href=""/UnionSearch.aspx?page={0}"">尾页</a></div>", PageCount()));
             sb.Append(string.Format("<div>{0}/{1}</div>", PageIndex, PageCount()));
             return sb.ToString();
         }
         protected void btnSel_Click(object sender, EventArgs e)
         {
             //自动执行Page_Load
         }
     }
 }

UnionSearch

 using com.DAL.Base;
 using Model.ruanmou;
 using System;
 using System.Collections.Generic;
 using System.Data;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;

 namespace DAL.ruanmou
 {
     //联合查询
     public class StuAskDal : System.Web.UI.Page
     {
         public static BaseDAL<StuAsk> m_RNewsDal = new BaseDAL<StuAsk>();

         /// <summary>
         /// 获取到当前条件下的记录数
         /// </summary>
         /// <param name="para"></param>
         /// <param name="sWhere"></param>
         /// <returns></returns>
         public static int GetUserInnerAskCount(List<dbParam> para, string sWhere)
         {
             string sSql = string.Format(@"select UI.UserId from UserInfor
26         UI inner join StuAsk SA on UI.UserId=SA.UserId where 1=1 and {0}", sWhere);
             DataTable dt = SqlHelper.ExecuteDataTable(com.Model.Base.DataBaseEnum.sq_ruanmou, sSql, CommandType.Text, para);
             return dt.Rows.Count;
         }

         /// <summary>
         /// 获取到当前条件下的datatable
         /// </summary>
         /// <param name="pagesize">每页显示多少条数据</param>
         /// <param name="pageindex">页码</param>
         /// <param name="sWhere">条件语句</param>
         /// <param name="listPm">cmd参数</param>
         /// <returns></returns>
         public static DataTable GetUserInnerAskDt(int pagesize, int pageindex, string sWhere, List<dbParam> listPm)
         {
             string sSql = string.Format(@"select top {0}*
42                                             from
43                                             (
44                                             select row_number() over(order by AskId) as rownumber,* from
45                                             (select UI.UserId,UI.UserName,UI.Phase,SA.AskId,SA.Title,SA.AskCategory
46                                             from UserInfor UI inner join StuAsk SA on
47                                             UI.UserId=SA.UserId) UISA where {2}
48                                             )A
49                                             where rownumber>({1}-1)*{0}", pagesize, pageindex, sWhere);
             DataTable dt = SqlHelper.ExecuteDataTable(com.Model.Base.DataBaseEnum.sq_ruanmou, sSql, CommandType.Text, listPm);
             return dt;
         }
     }
 }

 using com.DAL.Base;
 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 using Model.ruanmou;
 using com.Utility;
 using System.Web;

 namespace DAL.ruanmou
 {
     public class RNewsDal : System.Web.UI.Page
     {
         public static BaseDAL<RNews> m_RNewsDal = new BaseDAL<RNews>();
     }
 }

RNewsDal

 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 using com.Model.Base;

 namespace Model.ruanmou
 {
     public class RNews : BaseModel
     {
         public RNews()
         {
             PrimaryKey = "NewsId";
             DataBaseName = DataBaseEnum.sq_ruanmou;
         }

         public int NewsId { get; set; }
         public string Title { get; set; }
         public string Text { get; set; }
         public DateTime CreatedTime { get; set; }
         public string NewsClass { get; set; }
         public int ViewCount { get; set; }

     }
 }

RNews

 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 using com.Model.Base;

 namespace Model.ruanmou
 {
     public class StuAsk : BaseModel
     {
         public StuAsk()
         {
             PrimaryKey = "AskId";
             DataBaseName = DataBaseEnum.sq_ruanmou;
         }

         public int AskId { get; set; }
         public string Title { get; set; }
         public string Text { get; set; }
         public int AskCategory { get; set; }//1表示前端，2表示数据库，3表示.net，4表示ps
         public DateTime CreateTime { get; set; }
         public int UserId { get; set; }
         public string ClientIP { get; set; }
     }
 }

StuAsk