用rdlc文件直接导出到excel或PDF

private
DataTable LoadSalesData()

{

// Load data from XML file.

DataSet dataSet = new
DataSet();

dataSet.ReadXml(@"c:/Reports/data.xml"

);

return
dataSet.Tables[0];

}

public
Form1()

{

InitializeComponent();

}

private
void
Form1_Load(object sender, EventArgs e)

{

this
.reportViewer1.ProcessingMode = ProcessingMode.Local;

this
.reportViewer1.LocalReport.ReportPath = @"c:/Reports/Report1.rdl"

;

reportViewer1.LocalReport.DataSources.Add(

new
ReportDataSource("Sales"

, LoadSalesData()));

this
.reportViewer1.RefreshReport();

}

private
void
button1_Click(object sender, EventArgs e)

{

Warning[] warnings;

string
[] streamids;

string
mimeType;

string
encoding;

string
extension;

byte[] bytes = reportViewer1.LocalReport.Render(

"Excel"

, null
, out mimeType, out encoding, out extension,

out streamids, out warnings);

FileStream fs = new
FileStream(@"c:/output.xls"

, FileMode.Create);

fs.Write(bytes, 0, bytes.Length);

fs.Close();

MessageBox.Show("Report exported to output.xls"

, "Info"

);

}