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我有一个带有一些计算的小型 Windows 应用程序，并填充了我的无类型数据集，即“progDS”。我使用了 MS Access 数据库。如果我使用类型化的数据集，报表会挑选每一行并将其显示在报表查看器上（这不是我的要求）。我一直在尝试做的是只显示必须包含新计算字段的三行。

该应用程序适用于我的部门，接收学生的形式，提供特定程序（数据集“progDS”包含）。RDLC 报告，而 ReportViewer 只接受类型化的数据集，如何覆盖或更改数据集并提供我的，即“progDS”。

我在另一个表单上有 ReportViewer，我能够将数据集“progDS”放入该表单。

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Data.OleDb;

namespace FreshFormReport
{
    public partial class Form3 : Form
    {
        Form1 ObjFomr1 = new Form1();
        DataSet dsF3 = new DataSet();
        DataSet2 dataSet = new DataSet2();
        DataTable dtF3 = new DataTable();
        BindingSource bs = new BindingSource();


        public Form3()
        {
            InitializeComponent();
        }


        private void Form3_Load(object sender, EventArgs e)
        {
            try
            {
                // TODO: This line of code loads data into the    'DataSet2.RpTable' table. You can move, or remove it, as needed.
                //    this.RpTableTableAdapter.Fill(this.DataSet2.RpTable);
                reportViewer1.LocalReport.DataSources.Clear();
                //    this.reportViewer1.RefreshReport();
                Microsoft.Reporting.WinForms.ReportDataSource rptSource = new Microsoft.Reporting.WinForms.ReportDataSource("dsF3", dsF3.Tables["Porgrams"]);
                 reportViewer1.Reset();
                 reportViewer1.ProcessingMode =    Microsoft.Reporting.WinForms.ProcessingMode.Local;
                Microsoft.Reporting.WinForms.LocalReport localRep = reportViewer1.LocalReport;
                localRep.Refresh();
                localRep.ReportEmbeddedResource = "C:\\Users\\*******  \\Documents\\Visual Studio 2010\\Projects\\FreshFormReport\\FreshFormReport\\MyReport.rdlc";

                rptSource.Name = "MyReport";
                //RpTableTableAdapter.Fill(DataSet2.RpTable);
                rptSource.Value = DataSet2.RpTable;
                reportViewer1.LocalReport.DataSources.Clear();
                reportViewer1.LocalReport.DataSources.Add(rptSource);
                //string name = localRep.GetDataSourceNames().ToString();
                reportViewer1.LocalReport.ReportPath = "C:\\Users\\******  \\Documents\\Visual Studio 2010\\Projects\\FreshFormReport\\FreshFormReport\\MyReport.rdlc";

                //reportViewer1.LocalReport.ReportEmbeddedResource =  "MyReport.rdlc";
                //reportViewer1.Refresh();
                reportViewer1.Refresh();
                reportViewer1.RefreshReport();
            }
            catch (Exception x)
            {
                MessageBox.Show(x.Message);
            }

        }

        public void F3function(DataSet ds, DataTable dt)
        {
            try
            {
                dsF3 = ds;
                dtF3 = dt;
                bs.DataSource = dt;
            }
             catch (Exception x)
            {
                MessageBox.Show(x.Message);
            }
        }
    }
}
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