示例代码：

sample code:

private void button1_Click(object sender, EventArgs e)
{
    DataSet1TableAdapters.Tbl1TableAdapter tb1 = new DataSet1TableAdapters.Tbl1TableAdapter();
    DataSet1.Tbl1DataTable ds = tb1.GetData();
    Microsoft.Reporting.WinForms.ReportDataSource reportDataSource1 = new Microsoft.Reporting.WinForms.ReportDataSource("DataSet1", ds.AsEnumerable().CopyToDataTable());
    reportViewer1.LocalReport.DataSources.Clear();
    reportViewer1.LocalReport.ReportPath = "Report1.rdlc";
    reportViewer1.LocalReport.DataSources.Add(reportDataSource1);
    reportViewer1.RefreshReport();
}

private void button2_Click(object sender, EventArgs e)
{
    DataSet2TableAdapters.Tbl2TableAdapter tb1 = new DataSet2TableAdapters.Tbl2TableAdapter();
    DataSet2.Tbl2DataTable ds = tb1.GetData();
    Microsoft.Reporting.WinForms.ReportDataSource reportDataSource2 = new Microsoft.Reporting.WinForms.ReportDataSource("DataSet2", ds.AsEnumerable().CopyToDataTable());
    reportViewer1.LocalReport.DataSources.Clear();
    reportViewer1.LocalReport.ReportPath = "Report2.rdlc";
    reportViewer1.LocalReport.DataSources.Add(reportDataSource2);
    reportViewer1.RefreshReport();
}