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");

}

如果是BS模式，先保存在服务器上面，再从服务器上面下载下来