Use code to export reportviewer

Public Partial Class _ Default: system. Web. UI. Page
{

String m_currentreport;

Private VoidSaverptas (string s_rpttype)
{

Warning [] warnings;
String [] Streamids;
String Mimetype;
String Encoding;
String Extension;
// String deviceinfo;

Byte [] Bytes = Reportviewer1.serverreport. Render (
S_rpttype, Null , Out Mimetype, Out Encoding, Out Extension,
Out Streamids, Out Warnings );

/*
Filestream stream = file. openwrite (@ "C: \ Documents ents and Settings \ Michael. Shorten \ Local
Settings \ temp \ sample.pdf ");
Stream. Write (bytes, 0, bytes. Length );
Stream. Close ();
*/

Response. Buffer= True;
Response. Clear ();
Response. contenttype=Mimetype;
Response. addheader ("Content-Disposition","Attachment; filename = sample."+Extension );
Response. binarywrite (bytes );
Response. Flush ();

}

protected void page_load ( Object sender, eventargs e)
{

If(!(Request. querystring ["RPT"]= Null))
{
M_currentreport=Request. querystring ["RPT"]. Tostring ();
Showreport (m_currentreport );
}

}

Private VoidShowreport (StringSreportpath)
{

//Set processing mode

Reportviewer1.processingmode=Processingmode. Remote;

//Set Report Server and Path

Reportviewer1.serverreport. reportserverurl= NewUri (http://Localhost/reportserver );
Reportviewer1.serverreport. reportpath=Sreportpath;

}

Protected VoidBtnsaveexcel_click (ObjectSender, eventargs E)
{

Saverptas ("Excel");

}

Protected VoidBtnsave1__click (ObjectSender, eventargs E)
{

Saverptas ("PDF");

}

}

From: https://forums.microsoft.com/MSDN/ShowPost.aspx? Postid = 139828 & siteid = 1