用微软的RDLC报表直接打印不预览
直接上代码。
//打印清单
System.Data.DataTable dt = print_QD(dr);
ReportViewer rvDoc = new ReportViewer();
rvDoc.LocalReport.ReportEmbeddedResource = "SD_bcso.Report.rdlc";//加上报表的路径
rvDoc.LocalReport.DataSources.Add(new ReportDataSource(dt.TableName, dt));
PrintStream(rvDoc.LocalReport);
/// <summary>
/// 用来记录当前打印到第几页了
/// </summary>
private int m_currentPageIndex; /// <summary>
/// 声明一个Stream对象的列表用来保存报表的输出数据,LocalReport对象的Render方法会将报表按页输出为多个Stream对象。
/// </summary>
private IList<Stream> m_streams; private bool isLandSapces = false; /// <summary>
/// 用来提供Stream对象的函数,用于LocalReport对象的Render方法的第三个参数。
/// </summary>
/// <param name="name"></param>
/// <param name="fileNameExtension"></param>
/// <param name="encoding"></param>
/// <param name="mimeType"></param>
/// <param name="willSeek"></param>
/// <returns></returns>
private Stream CreateStream(string name, string fileNameExtension, Encoding encoding, string mimeType, bool willSeek)
{
//如果需要将报表输出的数据保存为文件,请使用FileStream对象。
Stream stream = new MemoryStream();
m_streams.Add(stream);
return stream;
} /// <summary>
/// 为Report.rdlc创建本地报告加载数据,输出报告到.emf文件,并打印,同时释放资源
/// </summary>
/// <param name="rv">参数:ReportViewer.LocalReport</param>
public void PrintStream(LocalReport rvDoc)
{
//获取LocalReport中的报表页面方向
isLandSapces = rvDoc.GetDefaultPageSettings().IsLandscape;
Export(rvDoc);
PrintSetting();
Dispose();
} private void Export(LocalReport report)
{
string deviceInfo =
@"<DeviceInfo>
<OutputFormat>EMF</OutputFormat>
</DeviceInfo>";
Warning[] warnings;
m_streams = new List<Stream>();
//将报表的内容按照deviceInfo指定的格式输出到CreateStream函数提供的Stream中。
report.Render("Image", deviceInfo, CreateStream, out warnings);
foreach (Stream stream in m_streams)
stream.Position = ;
} private void PrintSetting()
{
if (m_streams == null || m_streams.Count == )
throw new Exception("错误:没有检测到打印数据流");
//声明PrintDocument对象用于数据的打印
PrintDocument printDoc = new PrintDocument();
//获取配置文件的清单打印机名称
System.Configuration.AppSettingsReader appSettings = new System.Configuration.AppSettingsReader();
printDoc.PrinterSettings.PrinterName = appSettings.GetValue("QDPrint", Type.GetType("System.String")).ToString();
printDoc.PrintController = new System.Drawing.Printing.StandardPrintController();//指定打印机不显示页码
//判断指定的打印机是否可用
if (!printDoc.PrinterSettings.IsValid)
{
throw new Exception("错误:找不到打印机");
}
else
{
//设置打印机方向遵从报表方向
printDoc.DefaultPageSettings.Landscape = isLandSapces;
//声明PrintDocument对象的PrintPage事件,具体的打印操作需要在这个事件中处理。
printDoc.PrintPage += new PrintPageEventHandler(PrintPage);
m_currentPageIndex = ;
//设置打印机打印份数
printDoc.PrinterSettings.Copies = ;
//执行打印操作,Print方法将触发PrintPage事件。
printDoc.Print();
}
} /// <summary>
/// 处理程序PrintPageEvents
/// </summary>
/// <param name="sender"></param>
/// <param name="ev"></param>
private void PrintPage(object sender, PrintPageEventArgs ev)
{
//Metafile对象用来保存EMF或WMF格式的图形,
//我们在前面将报表的内容输出为EMF图形格式的数据流。
Metafile pageImage = new Metafile(m_streams[m_currentPageIndex]); //调整打印机区域的边距
System.Drawing.Rectangle adjustedRect = new System.Drawing.Rectangle(
ev.PageBounds.Left - (int)ev.PageSettings.HardMarginX,
ev.PageBounds.Top - (int)ev.PageSettings.HardMarginY,
ev.PageBounds.Width,
ev.PageBounds.Height); //绘制一个白色背景的报告
//ev.Graphics.FillRectangle(Brushes.White, adjustedRect); //获取报告内容
//这里的Graphics对象实际指向了打印机
ev.Graphics.DrawImage(pageImage, adjustedRect);
//ev.Graphics.DrawImage(pageImage, ev.PageBounds); // 准备下一个页,已确定操作尚未结束
m_currentPageIndex++; //设置是否需要继续打印
ev.HasMorePages = (m_currentPageIndex < m_streams.Count);
} public void Dispose()
{
if (m_streams != null)
{
foreach (Stream stream in m_streams)
stream.Close();
m_streams = null;
}
}