C# WinForms Report Printer

ReportPrinter.cs

public class ReportPrinter : IDisposable
    {
        private int currentPageIndex;
        private IList<Stream> streams;

        private DataTable LoadSalesData()
        {
            // Create a new DataSet and read sales data file
            //    data.xml into the first DataTable.
            DataSet dataSet = new DataSet();
            dataSet.ReadXml(@"..\..\data.xml");
            return dataSet.Tables[0];
        }

        // Routine to provide to the report renderer, in order to
        //    save an image for each page of the report.
        private Stream CreateStream(
            string name,
            string fileNameExtension,
            Encoding encoding,
            string mimeType,
            bool willSeek)
        {
            Stream stream = new MemoryStream();
            this.streams.Add(stream);
            return stream;
        }

        // Export the given report as an EMF (Enhanced Metafile) file.
        private void Export(LocalReport report)
        {
            string deviceInfo = Resources.PrintDeviceInfo;
            this.streams = new List<Stream>();
            report.Render("Image", deviceInfo, this.CreateStream, out Warning[] warnings);

            foreach (Stream stream in this.streams)
            {
                stream.Position = 0;
            }
        }

        // Handler for PrintPageEvents
        private void PrintPage(object sender, PrintPageEventArgs ev)
        {
            Metafile pageImage = new Metafile(this.streams[this.currentPageIndex]);

            // Adjust rectangular area with printer margins.
            Rectangle adjustedRect = new Rectangle(
                ev.PageBounds.Left - (int)ev.PageSettings.HardMarginX,
                ev.PageBounds.Top - (int)ev.PageSettings.HardMarginY,
                ev.PageBounds.Width,
                ev.PageBounds.Height);

            // Draw a white background for the report
            ev.Graphics.FillRectangle(Brushes.White, adjustedRect);

            // Draw the report content
            ev.Graphics.DrawImage(pageImage, adjustedRect);

            // Prepare for the next page. Make sure we haven't hit the end.
            this.currentPageIndex++;
            ev.HasMorePages = this.currentPageIndex < this.streams.Count;
        }

        private void Print()
        {
            if (this.streams == null || this.streams.Count == 0)
            {
                throw new Exception(message: "Error: no stream to print.");
            }

            PrintDocument printDoc = new PrintDocument();
            if (!printDoc.PrinterSettings.IsValid)
            {
                throw new Exception(message: "Error: cannot find the default printer.");
            }
            else
            {
                printDoc.PrintPage += new PrintPageEventHandler(this.PrintPage);
                this.currentPageIndex = 0;
                printDoc.Print();
            }
        }

        // Create a local report for Report.rdlc, load the data,
        //    export the report to an .emf file, and print it.
        public void Run(string reportPath, string reportDataSourceName, DataTable dataSourceValue)
        {
            LocalReport report = new LocalReport
            {
                ReportPath = reportPath
            };

            report.DataSources.Add(new ReportDataSource(reportDataSourceName, dataSourceValue));

            this.Export(report);
            this.Print();
        }

        public void Dispose()
        {
            if (this.streams != null)
            {
                foreach (Stream stream in this.streams)
                {
                    stream.Close();
                }

                this.streams = null;
            }
        }
    }

See https://msdn.microsoft.com/en-us/library/ms252091.aspx

NuGet package Microsoft.Reporting.WinForms is needed