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    public partial class Form1 : Form
    {
        System.Windows.Forms.BindingSource viewCustomerBindingSource = new BindingSource();

        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {

            this.reportViewer1.ProcessingMode = ProcessingMode.Local;

            this.reportViewer1.LocalReport.ReportPath = "TestReport.rdlc";
           // this.reportViewer1.LocalReport.ReportEmbeddedResource = "WindowsFormsApplication14.TestReport.rdlc";

            this.reportViewer1.LocalReport.EnableExternalImages = true;



           List<ReportParameter> para = new List<ReportParameter>();

            //这里是添加两个字段


            //这里是添加两个数据源,两个list

           var list = new List<TestReport> { };

           list.Add(new TestReport() { a = "20100201", b = 0.1, c = 0.2, d = 0.1 });

           list.Add(new TestReport() { a = "20100202", b = 0.1, c = 0.2, d = 0.2 });

           list.Add(new TestReport() { a = "20100203", b = 0.1, c = 0.4, d = 0.2 });

            var test = new List<TestReport>() {new TestReport(){ a = "20100201", b = 0.33, c = 0.33, d = 0.33 }};

            this.reportViewer1.LocalReport.DataSources.Add(new ReportDataSource("DataSet1", list));




            this.reportViewer1.RefreshReport();
            this.reportViewer1.RefreshReport();
        }
    }
    

    public class TestReport

    {
        string _a;
        double _b;
        double _c;
        double _d;

        public string a { get { return _a; } set { _a = value; } }

        public double b { get { return _b; } set { _b = value; } }

        public double c { get { return _c; } set { _c = value; } }

        public double d { get { return _d; } set { _d = value; } }

    }