报表参数传递

Code
//多个参数传递:

private ReportParameter[] p = null;
/// <summary>
        /// 成绩报表
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void btnGradeRPT_Click(object sender, EventArgs e)
        {
            this.ReportViewer1.Visible = false;
            DataTable dt3 = studentBll.GetStudentXhXmId(" and bh = '" + txtBh.Text.Trim() + "'  order by xh");
            if (dt3.Rows.Count > 0)
            {
                DataTable dt4 = GetStudentRegesterBook(30, dt3);
                this.ReportViewer2.Visible = true;
                ReportDataSource Source = new ReportDataSource("DataSet10_DataTable1", dt4);
                this.ReportViewer2.LocalReport.DataSources.Clear();
                this.ReportViewer2.LocalReport.DataSources.Add(Source);
                this.ReportViewer2.LocalReport.SetParameters(GetParams(dt3));
                this.ReportViewer2.LocalReport.Refresh();
            }
            else
            {
                ScriptManager.RegisterStartupScript(this.btnGradeRPT, this.GetType(), "NoRecord", "alert('没有该班学

生!')", true);

            }

        }
        private ReportParameter[] GetParams(DataTable dt)
        {
           
            string title = "(" + this.hidXn.Value + "年   " + this.hidXq.Value + ")";
            string[] str1 = this.ddlstCourseCode.SelectedValue.Split('|');
            string[] str2 = new string[5];
            if (str1.Length == 5)
            {
                p = new ReportParameter[7];
                for (int i = 0; i < 5; i++)
                {
                    if (!str1[i].Equals("-1"))
                    {
                        str2[i] = str1[i];
                    }
                    else
                    {
                        str2[i] = "";
                    }
                }

                p[0] = new ReportParameter("title", title);
                p[1] = new ReportParameter("kkdw", "开课单位:" + str2[0]);
                p[2] = new ReportParameter("kcmc", "课程名称:" + str2[1]);
                p[3] = new ReportParameter("xs", "学时:" + str2[2]);
                p[4] = new ReportParameter("xf", "学分:" + str2[3]);
                p[5] = new ReportParameter("jsxm", "教师姓名:" + str2[4]);
                p[6] = new ReportParameter("total", "人数:" + dt.Rows.Count.ToString());
            }
            return p;
        }

       
        /// <summary>
        /// 两列转换为四列
        /// </summary>
        /// <param name="pagesize">每页大小</param>
        /// <param name="table"></param>
        /// <returns></returns>
        private DataTable GetStudentRegesterBook(int pagesize,DataTable table)
        {
            
            DataTable dt = new DataTable();
            int rows = table.Rows.Count;
            if (rows > 0)
            {
                dt.Columns.Add("xh1", typeof(string));
                dt.Columns.Add("xm1", typeof(string));
                dt.Columns.Add("xh2", typeof(string));
                dt.Columns.Add("xm2", typeof(string));

                int pagecount = 0;
                pagecount = rows / pagesize;
                if (pagecount * pagesize < rows)
                    pagecount = pagecount + 1;

                int i, j, k;
                //考虑前pagecount-1页
                if (rows > 0)
                {
                    for (i = 0; i < pagecount - 1; i++)
                    {
                        if (i % 2 == 0)
                        {
                            for (j = 0; j < pagesize; j++)
                            {
                                DataRow dr = dt.NewRow();
                                dr["xh1"] = table.Rows[j + i * pagesize]["xh"].ToString();
                                dr["xm1"] = table.Rows[j + i * pagesize]["xm"].ToString();
                                dt.Rows.Add(dr);
                            }
                        }
                        else
                        {
                            for (k = 0; k < pagesize; k++)
                            {

                                dt.Rows[k + (i / 2) * pagesize]["xh2"] = table.Rows[k + i * pagesize]["xh"].ToString();
                                dt.Rows[k + (i / 2) * pagesize]["xm2"] = table.Rows[k + i * pagesize]["xm"].ToString();

                            }
                        }


                    }
                    //考虑最后一页
                    //奇数页
                    if (pagecount % 2 == 1)
                    {

                        for (k = 0; k < rows - (pagecount - 1) * pagesize; k++)
                        {
                            DataRow dr = dt.NewRow();
                            dr["xh1"] = table.Rows[k + i * pagesize]["xh"].ToString();
                            dr["xm1"] = table.Rows[k + i * pagesize]["xm"].ToString();
                            dt.Rows.Add(dr);
                        }
                    }
                    else
                    {
                        //偶数页
                        for (k = 0; k < rows - (pagecount - 1) * pagesize; k++)
                        {

                            dt.Rows[k + (i / 2) * pagesize]["xh2"] = table.Rows[k + i * pagesize]["xh"].ToString();
                            dt.Rows[k + (i / 2) * pagesize]["xm2"] = table.Rows[k + i * pagesize]["xm"].ToString();

                        }
                    }
                }
            }

                
            return dt;

        }



//单个参数传递:
using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Text;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using Microsoft.Reporting.WebForms;
using XNCJWC.BLL;
namespace XNCJWC.Web
{
    public partial class manager_GradeManage_GradeQueryClassRPT : System.Web.UI.Page
    {
        private xscjBLL xscjBll = new xscjBLL();
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                string xn=Request.QueryString["xn"];
                string xq=Request.QueryString["xq"];
                string bh=Request.QueryString["bh"];
                string kc=Server.UrlDecode(Request.QueryString["kc"]);
                string[] str=new string[2];         
                str = kc.Split('-');
                DataTable table = new DataTable();                
                string strWhere =" xn = '"+xn+"' and xq='"+xq+"' and kcbh like '%"+str[0]+"%'" ;
                string strBh = " bh like '" + bh + "%'";
                string oxq = "";
                 if (xq == "1")
                {
                    oxq = "春季学期";
                }
                else
                {
                    oxq = "秋季学期";
                }
               
                
                table = xscjBll.GetZxXsGrade(strBh, strWhere);
                this.ReportViewer1.Visible = true;
                ReportDataSource source = new ReportDataSource("GradeQueryClass_DataTable1", table);
                this.ReportViewer1.LocalReport.DataSources.Clear();
                this.ReportViewer1.LocalReport.DataSources.Add(source);
                string title = xn + "年" + oxq + bh + "班" + str[1] + "学生成绩报表" + "(共"+table .Rows .Count +"人)";
                ReportParameter p = new ReportParameter("title", title);
                this.ReportViewer1.LocalReport.SetParameters(new ReportParameter[] { p });
                this.ReportViewer1.LocalReport.Refresh();


                 
            }

        }
    }
}


前台代码:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="GradeQueryClassRPT.aspx.cs" 

Inherits="XNCJWC.Web.manager_GradeManage_GradeQueryClassRPT" %>

<%@ Register Assembly="Microsoft.ReportViewer.WebForms, Version=9.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"
    Namespace="Microsoft.Reporting.WebForms" TagPrefix="rsweb" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>学生总评成绩报表</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    <div class="topformlist" style="width: auto; height: 20px" id="DIV1"  >    
     <span class="textlabel"> 当前位置-&gt;成绩管理-&gt;查询-&gt;按班级查询学生成绩报表</span></div>
        <rsweb:ReportViewer ID="ReportViewer1" runat="server" Width="900px" Height ="400px">
        <LocalReport ReportPath="manager/GradeManage/Report/GradeQueryClassRPT.rdlc"></LocalReport>
        </rsweb:ReportViewer>
    </div>
    </form>
</body>
</html>