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Microsoft.Reporting.WebForms.ReportViewer rview = new Microsoft.Reporting.WebForms.ReportViewer();
//Web Address of your report server (ex: http://rserver/reportserver)

rview.ServerReport.ReportServerUrl = new Uri("http://rserver/reportserver");

rview.ServerReport.ReportPath = "/Report Project2/Comment";

string mimeType, encoding, extension, deviceInfo;
string[] streamids;
Microsoft.Reporting.WebForms.Warning[] warnings;
string format = "Excel"; //Desired format goes here (PDF, Excel, or Image)

deviceInfo = "" + "True" + "";
byte[] bytes = rview.ServerReport.Render(format, deviceInfo, out mimeType, out encoding, out extension, out streamids, out warnings);

try
{
System.IO.FileStream _FileStream = new System.IO.FileStream(Server.MapPath("output.xlsx"), System.IO.FileMode.Create, System.IO.FileAccess.Write);
_FileStream.Write(bytes, 0, bytes.Length);
//_FileStream.Close();
}
catch (Exception _Exception)
{
Console.WriteLine("Exception caught in process: {0}", _Exception.ToString());
}
< /code>
Es weiß nicht, wie man Inor -Format, DeviceInfo usw. verwendet, mit Respose -Objekt Excel im Client -Browser.Response.Clear();

if (format == "PDF")
{
Response.ContentType = "application/pdf";
Response.AddHeader("Content-disposition", "filename=output.pdf");
}
else if (format == "Excel")
{
Response.ContentType = "application/excel";
Response.AddHeader("Content-disposition", "filename=output.xls");
}
Response.OutputStream.Write(bytes, 0, bytes.Length);
Response.OutputStream.Flush();
Response.OutputStream.Close();
Response.Flush();
Response.Close();