代码
/// <summary>
/// 打印帮助类
/// </summary>
public class PrintHelper
{ private int m_currentPageIndex;
private IList<Stream> m_streams;
/// <summary>
/// 报表直接打印
/// </summary>
/// <param name="reportPath">报表文件路径</param>
/// <param name="printerName">打印机名称</param>
/// <param name="dt">DataTable</param>
/// <param name="sourceName">rdlc的数据集名称</param>
/// <param name="paraList">参数列表</param>
public void Run(string reportPath, string printerName, DataTable dt, string sourceName, List<ReportParameter> paraList)
{
LocalReport report = new LocalReport();
report.ReportPath = reportPath;
report.DataSources.Add(new ReportDataSource(sourceName,dt));
report.EnableExternalImages = true;
report.SetParameters(paraList);
Export(report);
m_currentPageIndex = 0;
Print(printerName);
}
private void Export(LocalReport report)
{
string deviceInfo =
"<DeviceInfo>" +
" <OutputFormat>EMF</OutputFormat>"+
"</DeviceInfo>";
Warning[] warnings;
m_streams = new List<Stream>();
try
{
report.Render("Image", deviceInfo, CreateStream, out warnings);
}
catch (Exception ex)
{
Exception innerEx = ex.InnerException;
while (innerEx != null)
{
string errmessage = innerEx.Message;
innerEx = innerEx.InnerException;
}
}
foreach (Stream stream in m_streams)
{
stream.Position = 0;
}
}
private Stream CreateStream(string name, string fileNameExtension, Encoding encoding, string mimeType, bool willSeek)
{
Stream stream = new FileStream(name + DateTime.Now.Millisecond + "." + fileNameExtension, FileMode.Create);
m_streams.Add(stream);
return stream;
}
private void Print(string printerName)
{
if (m_streams == null || m_streams.Count == 0) return;
PrintDocument printDoc = new PrintDocument();
if (printerName.Length > 0)
{
printDoc.PrinterSettings.PrinterName = printerName;
}
foreach (PaperSize ps in printDoc.PrinterSettings.PaperSizes)
{
if (ps.PaperName == "A4")
{
printDoc.PrinterSettings.DefaultPageSettings.PaperSize = ps;
printDoc.DefaultPageSettings.PaperSize = ps;
}
}
if (!printDoc.PrinterSettings.IsValid)
{
string msg = string.Format("找不到打印机：{0}",printerName);
LogUtil.Log(msg);
return;
}
printDoc.PrintPage += new PrintPageEventHandler(PrintPage);
printDoc.Print();
}
private void PrintPage(object sender, PrintPageEventArgs ev)
{
Metafile pageImage = new Metafile(m_streams[m_currentPageIndex]);
ev.Graphics.DrawImage(pageImage, 0, 0, 827, 1169);//像素
m_currentPageIndex++;
ev.HasMorePages = (m_currentPageIndex < m_streams.Count);
}
}
说明
打印格式
string deviceInfo =
"<DeviceInfo>" +
" <OutputFormat>EMF</OutputFormat>" +
" <PageWidth>210mm</PageWidth>" +
" <PageHeight>297mm</PageHeight>" +
" <MarginTop>5mm</MarginTop>" +
" <MarginLeft>10mm</MarginLeft>" +
" <MarginRight>10mm</MarginRight>" +
" <MarginBottom>5mm</MarginBottom>" +
"</DeviceInfo>";//这里是设置打印的格式 边距什么的
关于OutputFormat：
参考文章
http://www.cnblogs.com/bfyx/p/3279385.html （详细）
http://blog.csdn.net/moshuchao/article/details/2607017
http://www.cnblogs.com/qiuweiguo/archive/2011/08/26/2154706.html
收集另一文
http://www.cnblogs.com/hlxs/archive/2010/11/18/2087988.html
//初始化报表信息
private void SetReportInfo(string reportPath,string sourceName,DataTable dataSource,bool isFengPi)
{
if (!File.Exists(reportPath))
{
MessageBox.Show("报表文件:" + reportPath + " 不存在!","提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
if (dataSource == null || dataSource.Rows.Count == 0)
{
MessageBox.Show("没有找到案卷号为:"+txtArchiveNum.Text.Trim()+"的相关目录信息", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
pos = 1;
LocalReport report1 = new LocalReport();
//设置需要打印的报表的文件名称。
report1.ReportPath = reportPath;
if (isFengPi)
{
//设置参数
string archveTypeName = GetArchiveTypeName();
ReportParameter archiveType = new ReportParameter("ArchiveType", archveTypeName);
report1.SetParameters(archiveType);
}
//创建要打印的数据源
ReportDataSource source = new ReportDataSource(sourceName, dataSource);
report1.DataSources.Add(source);
//刷新报表中的需要呈现的数据
report1.Refresh();
pos = 2;
m_streams = new List<Stream>();
string deviceInfo ="<DeviceInfo>" +
" <OutputFormat>EMF</OutputFormat>" +
" <PageWidth>21cm</PageWidth>" +
" <PageHeight>29.7cm</PageHeight>" +
" <MarginTop>2.0066cm</MarginTop>" +
" <MarginLeft>2.0066cm</MarginLeft>" +
" <MarginRight>2.0066cm</MarginRight>" +
" <MarginBottom>2.0066cm</MarginBottom>" +
"</DeviceInfo>";
Warning[] warnings;
//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。
report1.Render("Image", deviceInfo, CreateStream, out warnings);
}
//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。
private List<Stream> m_streams;
//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。
private Stream CreateStream(string name, string fileNameExtension, Encoding encoding, string mimeType, bool willSeek)
{
pos = 3;
//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;
}
//用来记录当前打印到第几页了
private int m_currentPageIndex;
#region 打印报表
private void Print()
{
pos = 4;
m_currentPageIndex = 0;
if (m_streams == null || m_streams.Count == 0)
return;
//声明PrintDocument对象用于数据的打印
PrintDocument printDoc = new PrintDocument();
//指定需要使用的打印机的名称，使用空字符串""来指定默认打印机
// printDoc.PrinterSettings.PrinterName = "";
//判断指定的打印机是否可用
if (!printDoc.PrinterSettings.IsValid)
{
MessageBox.Show("没有找到打印机!","提示",MessageBoxButtons.OK,MessageBoxIcon.Information);
return;
}
pos = 5;
printDoc.PrintPage += new PrintPageEventHandler(PrintPage);
//执行打印操作，Print方法将触发PrintPage事件。
printDoc.Print();
//释放资源
foreach (Stream stream in m_streams)
{
stream.Dispose();
stream.Close();
}
m_streams = null;
}
private void PrintPage(object sender, PrintPageEventArgs ev)
{
pos =6;
//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。
m_streams[m_currentPageIndex].Position = 0;
Metafile pageImage = new Metafile(m_streams[m_currentPageIndex]);
//指定是否横向打印
ev.PageSettings.Landscape = false;
//这里的Graphics对象实际指向了打印机
ev.Graphics.DrawImage(pageImage, ev.PageBounds);
m_streams[m_currentPageIndex].Close();
m_currentPageIndex++;
//设置是否需要继续打印
ev.HasMorePages = (m_currentPageIndex < m_streams.Count);
}
#endregion
//打印封皮
private void btPrint_Click(object sender, EventArgs e)
{
string reportPath = Application.StartupPath + "\\Files\\ReportEnvelop.rdlc";
SetReportInfo(reportPath, "DataSet1", GetDataSource(true), true);
Print();
}
